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Dr Paul Roach

Senior Lecturer

School of Environmental and Life Sciences (Applied Sciences)

Career Summary

Biography

Research Expertise

My research expertise lies in risk factors for the development of cardiovascular disease, especially cholesterol and its metabolism, homocysteine and its metabolism as well as blood pressure and the impact of nutrition and nutritional factors on these risk factors. My research expertise also covers natural products such as green tea and its constituents and their impact mainly on cholesterol metabolism and there possible use in functional foods for the prevention of cardiovascular disease. I am currently involved in supervising 5 PhD and 1 M Sc research students. In the past I have also successfully supervised a dozen honours students and three PhD students.



Teaching Expertise

My teaching expertise lies in the field of nutrition. I teach a 1st-year course in Introductory Nutrition, a 2nd-year course in Macronutrients, the energy-producing nutrients and a 3rd-year course on Nutrition in Health and Disease.



Administrative Expertise

Since 2001 I have been convenor for the Bachelor of Human Nutrition and since 2006 co-convenor for the Bachelor of Food Science and Human Nutrition.


Qualifications

  • PhD (Biochemistry), University of Montreal - Canada
  • Bachelor of Science (Honours), Dalhousie University - Canada
  • Master of Science, Dalhousie University - Canada

Keywords

  • Blood pressure
  • Cardiovascular Risk Factors
  • Cholesterol
  • Fatty Acids
  • Green Tea
  • Health and Disease
  • Homocysteine
  • Introduction to Foods and Nutrients
  • Lipoproteins
  • Macronutrient Metabolism
  • Natural Products
  • Nutrition

Fields of Research

CodeDescriptionPercentage
060499Genetics not elsewhere classified25
090899Food Sciences not elsewhere classified50
111199Nutrition and Dietetics not elsewhere classified25

Professional Experience

UON Appointment

DatesTitleOrganisation / Department
21/07/2014 - Senior LecturerUniversity of Newcastle
School of Environmental and Life Sciences
Australia

Academic appointment

DatesTitleOrganisation / Department
1/02/1994 - 1/11/2001Senior Research ScientistCSIRO, Adelaide
Division of Health Science and Nutirition
Australia
1/02/1989 - 1/02/1994Research ScientistCSIRO, Adelaide
Division of Human Nutrition
Australia
1/08/1986 - 1/02/1989Canadian Heart Postdoctoral Research Fellow CSIRO, Adelaide
Division of Human Nutrition
Australia
1/09/1980 - 1/08/1982Research OfficerDalhousie University, Halifax, Nova Scotia
Department of Biochemistry
Canada

Membership

DatesTitleOrganisation / Department
Member - Australian Atherosclerosis SocietyAustralian Atherosclerosis Society ASM
Australia
Deputy Chairman of Newcastle GroupNutrition Society of Australia
Australia
Member - Australian Institute of Food Science and TechnologyAustralian Institute of Food Science and Technology
Australia
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Chapter (4 outputs)

YearCitationAltmetricsLink
2013Vuong QV, Scarlett CJ, Roach PD, 'Green tea and pancreatic cancer chemoprevention', Green Tea: Varieties, Production and Health Benefits, Nova Science Publishers, New York 75-90 (2013) [B1]
Co-authorsC Scarlett, Vanquan Vuong
1999Pal S, Bursill C, Bottema CDK, Roach PD, 'Regulation of the Low-density Lipoprotein Receptor by Antioxidants', Antioxidants in Human Health and Disease, CABI Publishing, Wallingford [England] : 55-69 (1999)
1989Topping DL, Illman RJ, Roach PD, Nestel PJ, 'Adaptive effects of fish oils on hepatic lipid and lipoprotein metabolism', Fats for the Future, Chapman & Hall, Chichester 139-151 (1989)
1987Nestel PJ, Topping D, Marsh J, Wong S, Barrett H, Roach P, Kambouris B, 'Effects of polyenoic fatty acids (n 3) on lipid and lipoprotein metabolism', Proceedings of the AOCS Short Course on Polyunsaturated Fatty Acids and Eicosanoids, The American Oil Chemists Society, Urbana IL 94-102 (1987)
Show 1 more chapter

Journal article (80 outputs)

YearCitationAltmetricsLink
2015Chuyen HV, Nguyen MH, Roach PD, Golding JB, Parks SE, 'Gac fruit (Momordica cochinchinensis Spreng.): A rich source of bioactive compounds and its potential health benefits', International Journal of Food Science and Technology, 50 567-577 (2015)

Summary: Gac (Momordica cochinchinensis Spreng.) is a tropical vine originating from South and South-East Asia. Gac fruit has traditionally been used in Asia to provide red colour... [more]

Summary: Gac (Momordica cochinchinensis Spreng.) is a tropical vine originating from South and South-East Asia. Gac fruit has traditionally been used in Asia to provide red colour for cuisines and enhance visional health. Recently, Gac fruit has emerged as a potential source of carotenoids, especially lycopene and ß-carotene. Carotenoids and other identified bioactives from this fruit including phenolics, flavonoids and trypsin inhibitors are associated with many beneficial bioactivities such as antioxidant, anticancer and provitamin A activities. In addition to the traditional utilisation, commercial products like Gac powder and Gac oil have been manufactured as natural colourants and medicinal supplements. This paper is a review of the scientific literature on the nutritional composition, biological activities and processing of Gac fruit.

DOI10.1111/ijfs.12721
Co-authorsMinh Nguyen
2015Candrawinata VI, Golding JB, Roach PD, Stathopoulos CE, 'Optimisation of the phenolic content and antioxidant activity of apple pomace aqueous extracts', CYTA - Journal of Food, 13 293-299 (2015)

Response surface methodology (RSM) was used to optimise the parameters for phenolic extraction from apple pomace using water, extraction time, extraction temperature and pomace to... [more]

Response surface methodology (RSM) was used to optimise the parameters for phenolic extraction from apple pomace using water, extraction time, extraction temperature and pomace to water ratio. The responses from these parameters were evaluated by measuring the total phenolic content and antioxidant activity of extracts. The optimum extraction parameters found in this study were 30 min extraction time, 85°C extraction temperature and 0.05 pomace to water ratio. A verification experiment of these extraction parameters was performed, along with three other corroborative sets of parameters. There was no significant difference between the predicted and actual values, confirming that the predictions using the models obtained through RSM were valid.

DOI10.1080/19476337.2014.971344
2015Candrawinata VI, Golding JB, Roach PD, Stathopoulos CE, 'Optimisation of the phenolic content and antioxidant activity of apple pomace aqueous extracts', CYTA - Journal of Food, 13 293-299 (2015)
DOI10.1080/19476337.2014.971344
2015Tan SP, Kha TC, Parks SE, Stathopoulos CE, Roach PD, 'Effects of the spray-drying temperatures on the physiochemical properties of an encapsulated bitter melon aqueous extract powder', Powder Technology, 281 65-75 (2015)

Bitter melon (Momordica charantia L.) is a medicinal fruit often used for the treatment of diabetes, due to its content of saponins, phenolics and flavonoids and its antioxidant c... [more]

Bitter melon (Momordica charantia L.) is a medicinal fruit often used for the treatment of diabetes, due to its content of saponins, phenolics and flavonoids and its antioxidant capacity. The aims were to use response surface methodology (RSM) to optimise the inlet (125.6, 130, 140, 150, 154.1°C) and outlet (72.9, 75, 80, 85, 87.1°C) temperatures for the spray-drying encapsulation of a bitter melon aqueous extract using a combination of maltodextrin and gum Arabic as encapsulating agent and to determine the stability of the optimised encapsulated powder under various storage conditions. The RSM models were adequate to describe and predict the responses for the process yield, the retentions of saponins, phenolics, flavonoids and antioxidant activity, the moisture content and the water solubility index with an overall R2=0.91. The optimal inlet and outlet temperatures were determined to be 140°C and 80°C, respectively. The optimised spray-dried powder had high values for process yield (71.4±1.4%), retention of bioactive compounds and antioxidant activity (=87.9±2.6%), water solubility index (89.9±0.51%) and had a low moisture content (2.2±0.1%), which was below the Mo=5.71 predicted by the BET model. However, in terms of the morphology of the powder particles under scanning electron microscopy and loss of the bioactive compounds and antioxidant activity, the safest range for preserving the powder at 25°C was determined to range from 22.5% to 33.8%. The encapsulated powder was also slightly more stable at -20 and 10°C than at 30°C, over 150days. Therefore, it can be concluded that spray-drying with the inlet temperature at 140°C and the outlet temperature at 80°C resulted in a very stable encapsulated powder of the bitter melon aqueous extract.

DOI10.1016/j.powtec.2015.04.074
2014Tan SP, Vuong QV, Stathopoulos CE, Parks SE, Roach PD, 'Optimized Aqueous Extraction of Saponins from Bitter Melon for Production of a Saponin-Enriched Bitter Melon Powder', Journal of Food Science, 79 (2014) [C1]

Bitter melon, Momordica charantia L. (Cucurbitaceae), aqueous extracts are proposed to have health-promoting properties due to their content of saponins and their antioxidant acti... [more]

Bitter melon, Momordica charantia L. (Cucurbitaceae), aqueous extracts are proposed to have health-promoting properties due to their content of saponins and their antioxidant activity. However, the optimal conditions for the aqueous extraction of saponins from bitter melon and the effects of spray drying have not been established. Therefore, this study aimed to optimize the aqueous extraction of the saponins from bitter melon, using response surface methodology, prepare a powder using spray drying, and compare the powder's physical properties, components, and antioxidant capacity with aqueous and ethanol freeze-dried bitter melon powders and a commercial powder. The optimal aqueous extraction conditions were determined to be 40 °C for 15 min and the water-to-sample ratio was chosen to be 20:1 mL/g. For many of its physical properties, components, and antioxidant capacity, the aqueous spray-dried powder was comparable to the aqueous and ethanol freeze-dried bitter melon powders and the commercial powder. The optimal conditions for the aqueous extraction of saponins from bitter melon followed by spray drying gave a high quality powder in terms of saponins and antioxidant activity. © 2014 Institute of Food Technologists®.

DOI10.1111/1750-3841.12514
CitationsScopus - 1
Co-authorsVanquan Vuong
2014Hirun S, Utama-ang N, Roach PD, 'Turmeric (Curcuma longa L.) drying: an optimization approach using microwave-vacuum drying', JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, 51 2127-2133 (2014)
DOI10.1007/s13197-012-0709-9Author URL
CitationsScopus - 1Web of Science - 3
2014Tan SP, Parks SE, Stathopoulos CE, Roach PD, 'Greenhouse-grown bitter melon: Production and quality characteristics', Journal of the Science of Food and Agriculture, 94 1896-1903 (2014)
DOI10.1002/jsfa.6509
CitationsScopus - 1
2014Tan SP, Parks SE, Stathopoulos CE, Roach PD, 'Greenhouse-grown bitter melon: Production and quality characteristics', Journal of the Science of Food and Agriculture, 94 1896-1903 (2014) [C1]

BACKGROUND: Bitter melon (Momordica charantia L.) is a medicinal fruit reported to have antidiabetic properties. To grow this tropical fruit year-round in temperate climates, gree... [more]

BACKGROUND: Bitter melon (Momordica charantia L.) is a medicinal fruit reported to have antidiabetic properties. To grow this tropical fruit year-round in temperate climates, greenhouse production is necessary, sometimes without insect pollinators. Suitable high-yielding varieties with good bioactivity need to be identified. This experiment evaluated the yield of six varieties of bitter melon under greenhouse conditions and their bioactivity in terms of total phenolic and saponin compounds and total antioxidant activity determined using four assays. RESULTS: The larger varieties (Big Top Medium, Hanuman, Jade and White) were more productive than the small varieties (Indra and Niddhi) in terms of total fruit weight and yield per flower pollinated. The bioactivity (total phenolic and saponin compounds and antioxidant activity) of the two small varieties and Big Top Medium was significantly higher than that of the other three large varieties. Two antioxidant assays, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP), were shown to provide the strongest correlations with phenolic and saponin compounds of bitter melon. CONCLUSION: Preliminary research has identified Big Top Medium as the most suitable variety for greenhouse production. The rich source of phenolic and saponin compounds and their associated antioxidant activity highlight bitter melon as a valuable food. © 2013 Society of Chemical Industry.

DOI10.1002/jsfa.6509
CitationsScopus - 2Web of Science - 1
2014Kha TC, Nguyen MH, Roach PD, Stathopoulos CE, 'Microencapsulation of Gac oil: Optimisation of spray drying conditions using response surface methodology', Powder Technology, 264 298-309 (2014) [C1]

The objective of this study was to optimise the spray drying conditions for the encapsulation of Gac oil using response surface methodology. Results indicated that the correspondi... [more]

The objective of this study was to optimise the spray drying conditions for the encapsulation of Gac oil using response surface methodology. Results indicated that the corresponding response surface model was sufficient to describe and predict encapsulation efficiencies (EEs) in terms of the oil, ß-carotene, lycopene, encapsulation yield (EY), moisture content (MC), water solubility index (WSI) and peroxide value (PV) with R2 of 0.92, 0.91, 0.89, 0.85, 0.89, 0.98 and 0.97, respectively. Under optimal conditions (inlet and outlet temperatures of 154 and 80°C), the response variables including the EEs of the oil, ß-carotene, lycopene, EY, MC, WSI and PV were predicted and validated as 87.22%, 82.76%, 84.29%, 52.78%, 4.90%, 90.29% and 4.06meq/kg, respectively. Furthermore, physicochemical, reconstitution and colour properties of the optimally encapsulated powder were also determined. It was concluded that this powder containing high content of unsaturated fatty acids, ß-carotene and lycopene, and having the attractive red-yellow colour can be used as nutrient supplement and natural food colourant. © 2014 Elsevier B.V.

DOI10.1016/j.powtec.2014.05.053
CitationsScopus - 2Web of Science - 1
Co-authorsMinh Nguyen
2014Kha TC, Nguyen MH, Roach PD, Stathopoulos CE, 'Microencapsulation of Gac Oil by Spray Drying: Optimization of Wall Material Concentration and Oil Load Using Response Surface Methodology', Drying Technology, 32 385-397 (2014) [C1]

The objective of this study was to optimize the wall material concentration and the oil load on the encapsulation of Gac oil using spray drying by response surface methodology. Re... [more]

The objective of this study was to optimize the wall material concentration and the oil load on the encapsulation of Gac oil using spray drying by response surface methodology. Results showed that the quadratic polynomial model was sufficient to describe and predict encapsulation efficiencies in terms of oil, ß-carotene, lycopene, peroxide value (PV), moisture content (MC), and total color difference (¿ E) with R 2 values of 0.96, 0.95, 0.86, 0.89, 0.88, and 0.87, respectively. Under optimum conditions (wall concentration of 29.5 % and oil load of 0.2), the encapsulation efficiencies for oil, ß-carotene, lycopene, PV, MC, and ¿ E were predicted and confirmed as 92 %, 80 %, 74 %, 3.91 meq/kg, 4.14 % and 12.38, respectively. The physical properties of the encapsulated oil powders obtained by different formulations were also determined. It was concluded that the protein-polysaccharide matrix as the wall material was effectively used for spray-drying encapsulation of Gac oil. © 2014 Copyright Taylor and Francis Group, LLC.

DOI10.1080/07373937.2013.829854
CitationsScopus - 6Web of Science - 4
Co-authorsMinh Nguyen
2014Chuyen HV, Nguyen MH, Roach PD, Golding JB, Parks SE, 'Gac fruit (Momordica cochinchinensis Spreng.): a rich source of bioactive compounds and its potential health benefits', International Journal of Food Science and Technology, (2014)

Gac (Momordica cochinchinensis Spreng.) is a tropical vine originating from South and South-East Asia. Gac fruit has traditionally been used in Asia to provide red colour for cuis... [more]

Gac (Momordica cochinchinensis Spreng.) is a tropical vine originating from South and South-East Asia. Gac fruit has traditionally been used in Asia to provide red colour for cuisines and enhance visional health. Recently, Gac fruit has emerged as a potential source of carotenoids, especially lycopene and ß-carotene. Carotenoids and other identified bioactives from this fruit including phenolics, flavonoids and trypsin inhibitors are associated with many beneficial bioactivities such as antioxidant, anticancer and provitamin A activities. In addition to the traditional utilisation, commercial products like Gac powder and Gac oil have been manufactured as natural colourants and medicinal supplements. This paper is a review of the scientific literature on the nutritional composition, biological activities and processing of Gac fruit.

DOI10.1111/ijfs.12721
Co-authorsMinh Nguyen
2014Vuong QV, Roach PD, 'Caffeine in Green Tea: Its Removal and Isolation', SEPARATION AND PURIFICATION REVIEWS, 43 155-174 (2014) [C1]
DOI10.1080/15422119.2013.771127Author URL
CitationsScopus - 3Web of Science - 3
Co-authorsVanquan Vuong
2014Tan S, Stathopoulos C, Parks S, Roach P, 'An Optimised Aqueous Extract of Phenolic Compounds from Bitter Melon with High Antioxidant Capacity', Antioxidants, 3 814-829 (2014) [C1]
DOI10.3390/antiox3040814
2014Candrawinata VI, Golding JB, Roach PD, Stathopoulos CE, 'Total phenolic content and antioxidant activity of apple pomace aqueous extract: Effect of time, temperature and water to pomace ratio', International Food Research Journal, 21 2337-2344 (2014) [C1]

This study aimed to evaluate the effects of extraction time, extraction temperature and water to pomace ratio on the total phenolic content and antioxidant activity of apple pomac... [more]

This study aimed to evaluate the effects of extraction time, extraction temperature and water to pomace ratio on the total phenolic content and antioxidant activity of apple pomace aqueous extracts. Pomace was extracted using water (20-90°C) for 5-60 min. The extracts were evaluated for their total phenolic content (Folin Ciocalteu assay) and antioxidant activity (DPPH, FRAP and ABTS assays). A methanol extract of the pomace was used as control. It was found that water to pomace ratio (p < 0.001), extraction temperature (p < 0.001) and time (p < 0.001) were significant factors in extracting the polyphenolics from apple pomace, with the optimum extraction conditions utilising water to pomace ratio of 20:1 at 90°C for 15 min yielding the most polyphenolic compounds (1148 µg g-1 fresh pomace Gallic Acid Equivalents). These results indicated that water was a good solvent for extracting polyphenolics from apple pomace, however, as compared to the methanol extract (control), the aqueous extracts had lower total phenolic content (63%) and antioxidant activity (73-80%).

2014Goldsmith CD, Stathopoulos C, Golding JB, Roach PD, 'Fate of the phenolic compounds during olive oil production with the traditional press method', International Food Research Journal, 21 101-109 (2014) [C1]
CitationsScopus - 3
2014Tan SP, Parks SE, Stathopoulos CE, Roach PD, 'Extraction of Flavonoids from Bitter Melon', Food and Nutrition Sciences, 05 458-465 (2014) [C1]
DOI10.4236/fns.2014.55054
2014Tuyen CK, Nguyen MH, Roach PD, Stathopoulos CE, 'Effect of Drying Pre-treatments on the Yield and Bioactive Content of Oil Extracted from Gac Aril', INTERNATIONAL JOURNAL OF FOOD ENGINEERING, 10 103-112 (2014)
DOI10.1515/ijfe-2013-0028Author URL
CitationsScopus - 2Web of Science - 2
Co-authorsMinh Nguyen
2014Goldsmith C, Vuong Q, Stathopoulos C, Roach P, Scarlett C, 'Optimization of the Aqueous Extraction of Phenolic Compounds from Olive Leaves', Antioxidants, 3 700-712 (2014) [C1]
DOI10.3390/antiox3040700
Co-authorsC Scarlett, Vanquan Vuong
2014Lucock M, Yates Z, Martin C, Choi JH, Boyd L, Tang S, et al., 'Vitamin D, folate, and potential early lifecycle environmental origin of significant adult phenotypes.', Evolution, Medicine, and Public Health, 2014 69-91 (2014) [C1]
DOI10.1093/emph/eou013
Co-authorsZoe Yates, Martin Veysey, Mark Lucock, John Furst
2013Kha TC, Nguyen MH, Roach PD, Parks SE, Stathopoulos C, 'Gac Fruit: Nutrient and Phytochemical Composition, and Options for Processing', FOOD REVIEWS INTERNATIONAL, 29 92-106 (2013) [C1]
DOI10.1080/87559129.2012.692141Author URL
CitationsScopus - 5Web of Science - 4
Co-authorsMinh Nguyen
2013Candrawinata VI, Golding JB, Roach PD, Stathopoulos CE, 'From Apple to Juice-The Fate of Polyphenolic Compounds', FOOD REVIEWS INTERNATIONAL, 29 276-293 (2013) [C1]
DOI10.1080/87559129.2013.790049Author URL
CitationsScopus - 3
2013Vuong QV, Golding JB, Nguyen MH, Roach PD, 'Preparation of decaffeinated and high caffeine powders from green tea', Powder Technology, 233 169-175 (2013) [C1]

The aims of this study were to develop optimal conditions for decaffeination and spray drying procedures to produce decaffeinated and high caffeine powders from green tea (Camelli... [more]

The aims of this study were to develop optimal conditions for decaffeination and spray drying procedures to produce decaffeinated and high caffeine powders from green tea (Camellia sinensis). Blanching the tea leaves with water at 100. °C for 4. min at a water-to-tea ratio of 20:1. mL/g removed 83% of the caffeine while retaining 94% of the catechins. The optimal spray drying conditions, which gave the highest yield of green tea powder and the highest concentrations of the naturally occurring epistructured catechins were found to be 180. °C for the inlet temperature and 115. °C for the outlet temperature. Using these optimal conditions, a decaffeinated green tea powder (7 mg/g caffeine) and a high caffeine powder (95. mg/g) were produced. These two green tea powders had excellent physical properties and could be used as instant teas by consumers or utilized in the food, cosmetic and nutraceutical industries. © 2012 Elsevier B.V.

DOI10.1016/j.powtec.2012.09.002
CitationsScopus - 4Web of Science - 4
Co-authorsVanquan Vuong, Minh Nguyen
2013Kha TC, Nguyen MH, Roach PD, Stathopoulos CE, 'Effects of Gac aril microwave processing conditions on oil extraction efficiency, and-ßcarotene and lycopene contents', Journal of Food Engineering, 117 486-491 (2013) [C1]

The effects of Gac oil extraction conditions including microwave power, microwave time, steaming time and hydraulic pressure on extraction efficiency (EE), and b-carotene and lyco... [more]

The effects of Gac oil extraction conditions including microwave power, microwave time, steaming time and hydraulic pressure on extraction efficiency (EE), and b-carotene and lycopene contents were studied. It was found that the EE, and b-carotene and lycopene contents could be enhanced by suitable extraction conditions. Microwave drying was found to be better than air drying for pretreatment. Moisture content after drying and steaming between 8% and 11% (wt/wt) were best for pressing. Results showed that the most suitable conditions for Gac oil extraction from 900 g samples were microwave power of 630 W, microwave time of 65 min, steaming time of 20 min and hydraulic pressure of 170 kg/cm2. Under these conditions, the highest EE of 93% was achieved while Gac oil contained the highest content of b-carotene and lycopene at 140 and 414 mg/100 mL, respectively. Crown Copyright © 2012 Published by Elsevier Ltd. All rights reserved.

DOI10.1016/j.jfoodeng.2012.10.021
CitationsScopus - 8Web of Science - 7
Co-authorsMinh Nguyen
2013Kha TC, Nguyen MH, Phan DT, Roach PD, Stathopoulos CE, 'Optimisation of microwave-assisted extraction of Gac oil at different hydraulic pressure, microwave and steaming conditions', INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, 48 1436-1444 (2013) [C1]
DOI10.1111/ijfs.12109Author URL
CitationsScopus - 4Web of Science - 4
Co-authorsMinh Nguyen
2013Vuong QV, Golding JB, Stathopoulos CE, Roach PD, 'Effects of aqueous brewing solution pH on the extraction of the major green tea constituents', Food Research International, 53 713-719 (2013) [C1]

The pH of the aqueous brewing solution was maintained at values ranging from 1 to 9 during the green tea extraction and the effects on the tea's extracted constituents were studie... [more]

The pH of the aqueous brewing solution was maintained at values ranging from 1 to 9 during the green tea extraction and the effects on the tea's extracted constituents were studied. The epistructured catechins were stable under acidic conditions but epimerized or degraded at pH. =. 6. The extractable solids contained more epistructured catechins at pHs 3-5 but more non-epistructured catechins at pHs 6-7. More tea cream was obtained at pH 1 but the concentration of catechins, caffeine and theanine was low in this fraction. Therefore, to maximize the extraction of the epistructured catechins and to minimize their epimerization and degradation and to maximize the extraction of caffeine and theanine, the results suggest that the pH should be maintained between 3 and 5.3 during the aqueous brewing process. © 2012 Elsevier Ltd.

DOI10.1016/j.foodres.2012.09.017
CitationsScopus - 1Web of Science - 1
Co-authorsVanquan Vuong
2013Lucock MD, Martin C, Boyd L, Naumovski N, Roach P, Yates Z, Veysey M, 'Response to 'calcium, phosphate and the risk of cardiovascular events and all-cause mortality in a population with stable coronary heart disease'', HEART, 99 349-350 (2013) [C3]
DOI10.1136/heartjnl-2012-302480Author URL
Co-authorsMartin Veysey, Mark Lucock, Zoe Yates
2013Lucock M, Yates Z, Boyd L, Naylor C, Choi J, Ng X, et al., 'Vitamin C-related nutrient-nutrient and nutrient-gene interactions that modify folate status', European Journal of Nutrition, 52 569-582 (2013) [C1]
DOI10.1007/s00394-012-0359-8Author URL
CitationsScopus - 8Web of Science - 3
Co-authorsMartin Veysey, Zoe Yates, Mark Lucock
2013Lucock M, Yates Z, Martin C, Choi J, Boyd L, Tang S, et al., 'Hydrogen sulphide-related thiol metabolism and nutrigenetics in relation to hypertension in an elderly population', Genes & Nutrition, 8 221-229 (2013) [C1]
DOI10.1007/s12263-012-0317-3Author URL
CitationsScopus - 2Web of Science - 1
Co-authorsMark Lucock, Zoe Yates, Martin Veysey
2013Vuong QV, Hirun S, Roach PD, Bowyer MC, Phillips PA, Scarlett CJ, 'Effect of extraction conditions on total phenolic compounds and antioxidant activities of Carica papaya leaf aqueous extracts', JOURNAL OF HERBAL MEDICINE, 3 104-111 (2013) [C1]
DOI10.1016/j.hermed.2013.04.004Author URL
CitationsScopus - 8Web of Science - 9
Co-authorsMichael Bowyer, C Scarlett, Vanquan Vuong
2012Hirun S, Utama-ang N, Roach PD, 'Turmeric (Curcuma longa L.) drying: an optimization approach using microwave-vacuum drying', Journal of Food Science and Technology, 51 2127-2133 (2012)

This study investigated the effect of microwave power (2,400¿4,000¿W) and drying times (10¿30¿min) on the quality of dried turmeric in terms of colour (L, a*, b*), moisture co... [more]

This study investigated the effect of microwave power (2,400¿4,000¿W) and drying times (10¿30¿min) on the quality of dried turmeric in terms of colour (L, a*, b*), moisture content, water activity (aw), ash, antioxidant activity (2,2-dipheneyl-1-picrylhydrazyl; DPPH), total phenolic and curcuminoids content. In addition, Response Surface Methodology (RSM) was implemented to optimize the drying conditions for turmeric. A range of quality parameters, microwave power (W) and time (min) were fitted to quadratic models using a central composite design. The Analysis of Variance (ANOVA) statistic results suggested that the optimal qualities (i.e., aw, value, moisture content, phenolic content, curcuminoid content and EC50 and L value) of dried turmeric were achieved at high vacuum-microwave power (3,500¿4,000¿W) and long duration (27¿30¿min). The improvement in the quality of dried turmeric microwave-vacuum drying in these conditions was illustrated through the enzymatic browning reaction via inhibition of polyphenol oxidase which suppressed the formation of the brown pigments and increased the phenol substrates.

DOI10.1007/s13197-012-0709-9
CitationsScopus - 1
2012Vuong QV, Golding J, Nguyen MH, Roach PD, 'Production of caffeinated and decaffeinated green tea catechin powders from underutilised old tea leaves', Journal of Food Engineering, 110 1-8 (2012) [C1]
CitationsScopus - 8Web of Science - 8
Co-authorsMinh Nguyen, Vanquan Vuong
2012Vuong QV, Tan SP, Stathopoulos C, Roach PD, 'Improved extraction of green tea components from teabags using the microwave oven', Journal of Food Composition and Analysis, 27 95-101 (2012) [C1]
CitationsScopus - 3Web of Science - 3
Co-authorsVanquan Vuong
2012Candrawinata VI, Blades BL, Golding J, Stathopoulos C, Roach PD, 'Effect of clarification on the polyphenolic compound content and antioxidant activity of commercial apple juices', International Food Research Journal, 19 1055-1061 (2012) [C1]
CitationsScopus - 4
2011Kha TC, Nguyen MH, Roach PD, 'Effects of pre-treatments and air drying temperatures on colour and antioxidant properties of Gac fruit powder', International Journal of Food Engineering, 7 1-17 (2011) [C1]
CitationsScopus - 7Web of Science - 2
Co-authorsMinh Nguyen
2011Vuong QV, Stathopoulos C, Golding J, Nguyen MH, Roach PD, 'Optimum conditions for the water extraction of L -theanine from green tea', Journal of Separation Science, 34 2468-2474 (2011) [C1]
DOI10.1002/jssc.201100401
CitationsScopus - 11Web of Science - 11
Co-authorsMinh Nguyen, Vanquan Vuong
2011Vuong QV, Golding J, Stathopoulos C, Nguyen MH, Roach PD, 'Optimizing conditions for the extraction of catechins from green tea using hot water', Journal of Separation Science, 34 3099-3106 (2011) [C1]
DOI10.1002/jssc.201000863
CitationsScopus - 24Web of Science - 22
Co-authorsMinh Nguyen, Vanquan Vuong
2011Vuong QV, Nguyen V, Golding J, Roach PD, 'The content of bioactive constituents as a quality index for Vietnamese teas', International Food Research Journal, 18 329-336 (2011) [C1]
CitationsScopus - 6
Co-authorsVanquan Vuong
2011Vuong QV, Durel M, Roach PD, Stathopoulos C, 'Preliminary study on the fortification of tofu with green tea catechins', International Food Research Journal, 18 1553-1557 (2011) [C1]
CitationsScopus - 1
Co-authorsVanquan Vuong
2011Hirun S, Roach PD, 'A study of stability of (-)-Epigallocatechin gallate (EGCG) from green tea in a frozen product', International Food Research Journal, 18 1261-1264 (2011) [C1]
CitationsScopus - 3
2011Lucock MD, Ng X, Boyd L, Skinner VM, Wai R, Tang S, et al., 'TAS2R38 bitter taste genetics, dietary vitamin C, and both natural and synthetic dietary folic acid predict folate status, a key micronutrient in the pathoaetiology of adenomatous polyps', Food & Function, 2 457-465 (2011) [C1]
DOI10.1039/c1fo10054h
CitationsScopus - 7Web of Science - 5
Co-authorsMark Lucock, Martin Veysey, Zoe Yates
2011Vuong QV, Stathopoulos C, Nguyen MH, Golding J, Roach PD, 'Isolation of green tea catechins and their utilization in the food industry', Food Reviews International, 27 227-247 (2011) [C1]
DOI10.1080/87559129.2011.563397
CitationsScopus - 23Web of Science - 21
Co-authorsMinh Nguyen, Vanquan Vuong
2011Vuong QV, Bowyer MC, Roach PD, 'L-Theanine: Properties, synthesis and isolation from tea', Journal of the Science of Food and Agriculture, 91 1931-1939 (2011) [C1]
DOI10.1002/jsfa.4373
CitationsScopus - 29Web of Science - 24
Co-authorsMichael Bowyer, Vanquan Vuong
2011Hirun S, Roach PD, 'An improved solvent extraction method for the analysis of catechins and caffeine in green tea', Journal of Food and Nutrition Research, 50 160-166 (2011) [C1]
CitationsScopus - 4Web of Science - 3
2010Vuong QV, Golding J, Nguyen MH, Roach PD, 'Extraction and isolation of catechins from tea', Journal of Separation Science, 33 3415-3428 (2010) [C1]
DOI10.1002/jssc.201000438
CitationsScopus - 39Web of Science - 32
Co-authorsMinh Nguyen, Vanquan Vuong
2010Kha CT, Nguyen MH, Roach PD, 'Effects of spray drying conditions on the physicochemical and antioxidant properties of the Gac (Momordica cochinchinensis) fruit aril powder', Journal of Food Engineering, 98 385-392 (2010) [C1]
DOI10.1016/j.jfoodeng.2010.01.016
CitationsScopus - 84Web of Science - 69
Co-authorsMinh Nguyen
2010Naumovski N, Veysey M, Ng X, Boyd L, Dufficy L, Blades BL, et al., 'The folic acid endophenotype and depression in an elderly population', Journal of Nutrition, Health and Aging, 14 829-833 (2010) [C1]
DOI10.1007/s12603-010-0135-5
CitationsScopus - 3Web of Science - 2
Co-authorsMaureen Townley-Jones, Martin Veysey, Zoe Yates, Mark Lucock
2009Ng X, Boyd L, Dufficy L, Naumovski N, Blades BL, Travers C, et al., 'Folate nutritional genetics and risk for hypertension in an elderly population sample', Journal of Nutrigenetics and Nutrigenomics, 2 1-8 (2009) [C1]
DOI10.1159/000160079
CitationsScopus - 11Web of Science - 9
Co-authorsZoe Yates, Martin Veysey, Maureen Townley-Jones, Mark Lucock
2007Lucock MD, Yates ZR, Ng X, Veysey MJ, Blades BL, Travers C, et al., 'Preliminary evidence for genetic selection of 677T-MTHFR by natural annual cycle of folate abundance', Journal of Nutrigenetics and Nutrigenomics, 1 24-29 (2007) [C1]
DOI10.1159/000109872
CitationsScopus - 10Web of Science - 8
Co-authorsMartin Veysey, Mark Lucock, Zoe Yates
2007Bursill CA, Abbey M, Roach PD, 'A green tea extract lowers plasma cholesterol by inhibiting cholesterol synthesis and upregulating the LDL receptor in the cholesterol-fed rabbit', Atherosclerosis, 193 86-93 (2007) [C1]
DOI10.1016/j.atherosclerosis.2006.08.033
CitationsScopus - 68Web of Science - 54
2007Bursill CA, Roach PD, 'A green tea catechin extract upregulates the hepatic low-density lipoprotein receptor in rats', Lipids, 42 621-627 (2007) [C1]
DOI10.1007/s11745-007-3077-x
CitationsScopus - 27Web of Science - 27
2006Dufficy L, Naumovski N, Ng X, Blades BL, Yates ZR, Travers C, et al., 'G80A reduced folate carrier SNP influences the absorption and cellular translocation of dietary folate and its association with blood pressure in an elderly population', Life Sciences, 79 957-966 (2006) [C1]
DOI10.1016/j.lfs.2006.05.009
CitationsScopus - 19Web of Science - 19
Co-authorsMark Lucock, Martin Veysey, Zoe Yates
2006Bursill CA, Roach PD, 'Modulation of cholesterol metabolism by the green tea polyphenol (-)-epigallocatechin gallate in cultured human liver (HepG2) cells', Journal of Agricultural and Food Chemistry, 54 1621-1626 (2006) [C1]
DOI10.1021/jf051736o
CitationsScopus - 41Web of Science - 39
2005Lucock MD, Roach PD, 'The antifolate activity of tea catechins (letter)', Cancer Research, 65 8573-8573 (2005) [C3]
CitationsScopus - 4Web of Science - 3
Co-authorsMark Lucock
2004Owen AJ, Roach PD, Abbey M, 'Regulation of Low-Density Lipoprotein Receptor Activity by Estrogens and Phytoestrogens in a HepG2 Cell Model', Annals of Nutrition and Metabolism: European journal of nutrition, metabolic diseases and dietetics, 48 269-275 (2004) [C1]
DOI10.1159/000080462
CitationsWeb of Science - 19
2003Pal S, Thomson AM, Bottema CDK, Roach PD, 'Tocopherol modulates the low density lipoprotein receptor of human HepG2 cells', Nutrition Journal BioMed Central, 2 1-10 (2003) [C1]
DOI10.1186/1475-2891-2-1
2002Salleh MN, Runnie I, Roach PD, Mohamed S, Abeywardena MY, 'Inhibition of low-density lipoprotein oxidation and up-regulation of low-density lipoprotein receptor in HepG2 cells by tropical plant extracts', JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 50 3693-3697 (2002) [C1]
DOI10.1021/jf011593fAuthor URL
CitationsWeb of Science - 31
2002Pal S, Thomson AM, Bottema CDK, Roach PD, 'Polyunsaturated fatty acids downregulate the low density lipoprotein receptor of human HepG2 cells', JOURNAL OF NUTRITIONAL BIOCHEMISTRY, 13 55-63 (2002) [C1]
DOI10.1016/S0955-2863(01)00195-4Author URL
CitationsWeb of Science - 10
2001Bursill C, Roach PD, Bottema CDK, Pal S, 'Green tea upregulates the low-density lipoprotein receptor through the sterol-regulated element binding protein in HepG2 liver cells', JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 49 5639-5645 (2001)
DOI10.1021/jf010275dAuthor URL
CitationsWeb of Science - 31
2001Elsegood CL, Pal S, Roach PD, Mamo JCL, 'Binding and uptake of chylomicron remnants by primary and THP-1 human monocyte-derived macrophages: determination of binding proteins', CLINICAL SCIENCE, 101 111-119 (2001)
DOI10.1042/CS20010057Author URL
CitationsWeb of Science - 17
2000Smith JL, Roach PD, Wittenberg LN, Riottot M, Pillay SP, Nestel PJ, Nathanson LK, 'Effects of simvastatin on hepatic cholesterol metabolism, bile lithogenicity and bile acid hydrophobicity in patients with gallstones', JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 15 871-879 (2000)
DOI10.1046/j.1440-1746.2000.02231.xAuthor URL
CitationsScopus - 26Web of Science - 27
1999Abbey M, Owen A, Suzakawa M, Roach P, Nestel PJ, 'Effects of menopause and hormone replacement therapy on plasma lipids, lipoproteins and LDL-receptor activity', MATURITAS, 33 259-269 (1999)
DOI10.1016/S0378-5122(99)00054-7Author URL
CitationsWeb of Science - 37
1994BALASUBRAMANIAM S, SZANTO A, ROACH PD, 'CIRCADIAN-RHYTHM IN HEPATIC LOW-DENSITY-LIPOPROTEIN (LDL)-RECEPTOR EXPRESSION AND PLASMA LDL LEVELS', BIOCHEMICAL JOURNAL, 298 39-43 (1994)
Author URL
CitationsWeb of Science - 27
1993ROACH PD, BALASUBRAMANIAM S, HIRATA F, ABBEY M, SZANTO A, SIMONS LA, NESTEL PJ, 'THE LOW-DENSITY-LIPOPROTEIN RECEPTOR AND CHOLESTEROL-SYNTHESIS ARE AFFECTED DIFFERENTLY BY DIETARY-CHOLESTEROL IN THE RAT', BIOCHIMICA ET BIOPHYSICA ACTA, 1170 165-172 (1993)
DOI10.1016/0005-2760(93)90067-JAuthor URL
CitationsWeb of Science - 57
1993ROACH PD, KERRY NL, WHITING MJ, NESTEL PJ, 'COORDINATE CHANGES IN THE LOW-DENSITY-LIPOPROTEIN RECEPTOR ACTIVITY OF LIVER AND MONONUCLEAR-CELLS IN THE RABBIT', ATHEROSCLEROSIS, 101 157-164 (1993)
DOI10.1016/0021-9150(93)90112-8Author URL
CitationsWeb of Science - 22
1993ROACH PD, HOSKING J, CLIFTON PM, BAIS R, KUSENIC B, COYLE P, et al., 'THE EFFECTS OF HYPERCHOLESTEROLEMIA, SIMVASTATIN AND DIETARY-FAT ON THE LOW-DENSITY-LIPOPROTEIN RECEPTOR OF UNSTIMULATED MONONUCLEAR-CELLS', ATHEROSCLEROSIS, 103 245-254 (1993)
DOI10.1016/0021-9150(93)90267-XAuthor URL
CitationsWeb of Science - 21
1992ROACH PD, DOWLING K, BALASUBRAMANIAM S, ILLMAN RJ, KAMBOURIS AM, NESTEL PJ, TOPPING DL, 'FISH OIL AND OAT BRAN IN COMBINATION EFFECTIVELY LOWER PLASMA-CHOLESTEROL IN THE RAT', ATHEROSCLEROSIS, 96 219-226 (1992)
DOI10.1016/0021-9150(92)90068-RAuthor URL
CitationsWeb of Science - 13
1992SZANTO A, BALASUBRAMANIAM S, ROACH PD, NESTEL PJ, 'MODULATION OF THE LOW-DENSITY-LIPOPROTEIN-RECEPTOR-RELATED PROTEIN AND ITS RELEVANCE TO CHYLOMICRON-REMNANT METABOLISM', BIOCHEMICAL JOURNAL, 288 791-794 (1992)
Author URL
CitationsWeb of Science - 33
1991HOSKING JL, BAIS R, ROACH PD, THOMAS DW, 'HYPERCHOLESTEROLEMIA DUE TO FAMILIAL DEFECTIVE APOLIPOPROTEIN-B-100 IN 2 AUSTRALIAN FAMILIES', MEDICAL JOURNAL OF AUSTRALIA, 155 572-573 (1991)
Author URL
CitationsWeb of Science - 12
1991DUPRAS R, BRISSETTE L, ROACH PD, BEGIN S, TREMBLAY A, NOEL SP, 'THE DISAPPEARANCE RATE OF HUMAN VERSUS RAT INTERMEDIATE DENSITY LIPOPROTEINS FROM RAT-LIVER PERFUSION', BIOCHEMISTRY AND CELL BIOLOGY-BIOCHIMIE ET BIOLOGIE CELLULAIRE, 69 537-543 (1991)
Author URL
CitationsWeb of Science - 2
1990BALASUBRAMANIAM S, SIMONS LA, CHANG S, ROACH PD, NESTEL PJ, 'ON THE MECHANISM BY WHICH AN ACAT INHIBITOR (CL-277,082) INFLUENCES PLASMA-LIPOPROTEINS IN THE RAT', ATHEROSCLEROSIS, 82 1-5 (1990)
DOI10.1016/0021-9150(90)90137-8Author URL
CitationsWeb of Science - 33
1990TOPPING DL, ILLMAN RJ, ROACH PD, TRIMBLE RP, KAMBOURIS A, NESTEL PJ, 'MODULATION OF THE HYPOLIPIDEMIC EFFECT OF FISH OILS BY DIETARY FIBER IN RATS - STUDIES WITH RICE AND WHEAT BRAN', JOURNAL OF NUTRITION, 120 325-330 (1990)
Author URL
CitationsWeb of Science - 57
1990KAMBOURIS AM, ROACH PD, CALVERT GD, NESTEL PJ, 'RETROENDOCYTOSIS OF HIGH-DENSITY LIPOPROTEINS BY THE HUMAN HEPATOMA-CELL LINE, HEPG2', ARTERIOSCLEROSIS, 10 582-590 (1990)
Author URL
CitationsWeb of Science - 45
1988KAMBOURIS AM, ROACH PD, NESTEL PJ, 'DEMONSTRATION OF A HIGH-DENSITY LIPOPROTEIN (HDL)-BINDING PROTEIN IN HEP-G2 CELLS USING COLLOIDAL GOLD-HDL CONJUGATES', FEBS LETTERS, 230 176-180 (1988)
DOI10.1016/0014-5793(88)80666-5Author URL
CitationsWeb of Science - 20
1987ROACH PD, KAMBOURIS AM, TRIMBLE RP, TOPPING DL, NESTEL PJ, 'THE EFFECTS OF DIETARY FISH OIL ON HEPATIC HIGH-DENSITY AND LOW-DENSITY-LIPOPROTEIN RECEPTOR ACTIVITIES IN THE RAT', FEBS LETTERS, 222 159-162 (1987)
DOI10.1016/0014-5793(87)80211-9Author URL
CitationsWeb of Science - 93
1987ROACH PD, NOEL SP, 'BIOTINYLATION OF LOW-DENSITY LIPOPROTEINS VIA FREE AMINO-GROUPS WITHOUT LOSS OF RECEPTOR-BINDING ACTIVITY', JOURNAL OF LIPID RESEARCH, 28 1508-1514 (1987)
Author URL
CitationsWeb of Science - 22
1987ROACH PD, ZOLLINGER M, NOEL SP, 'DETECTION OF THE LOW-DENSITY-LIPOPROTEIN (LDL) RECEPTOR ON NITROCELLULOSE PAPER WITH COLLOIDAL GOLD LDL CONJUGATES', JOURNAL OF LIPID RESEARCH, 28 1515-1521 (1987)
Author URL
CitationsWeb of Science - 31
1986BRISSETTE L, ROACH PD, NOEL SP, 'THE EFFECTS OF LIPOSOME-RECONSTITUTED APOLIPOPROTEINS ON THE BINDING OF RAT INTERMEDIATE DENSITY LIPOPROTEINS TO RAT-LIVER MEMBRANES', JOURNAL OF BIOLOGICAL CHEMISTRY, 261 1631-1638 (1986)
Author URL
CitationsWeb of Science - 22
1985ROACH PD, NOEL SP, 'SOLUBILIZATION OF THE 17-ALPHA-ETHINYL ESTRADIOL-STIMULATED LOW-DENSITY LIPOPROTEIN RECEPTOR OF MALE-RAT LIVER', JOURNAL OF LIPID RESEARCH, 26 713-720 (1985)
Author URL
CitationsWeb of Science - 33
1981MACDONALD IA, ROACH PD, 'BILE-SALT INDUCTION OF 7-ALPHA-HYDROXYSTEROID AND 7-BETA-HYDROXYSTEROID DEHYDROGENASES IN CLOSTRIDIUM-ABSONUM', BIOCHIMICA ET BIOPHYSICA ACTA, 665 262-269 (1981)
DOI10.1016/0005-2760(81)90011-4Author URL
CitationsWeb of Science - 50
1981ROACH PD, PALMER FBSC, 'HUMAN-ERYTHROCYTE CYTOSOL PHOSPHATIDYL-INOSITOL-BISPHOSPHATE PHOSPHATASE', BIOCHIMICA ET BIOPHYSICA ACTA, 661 323-333 (1981)
DOI10.1016/0005-2744(81)90021-8Author URL
CitationsWeb of Science - 52
Show 77 more journal articles

Conference (53 outputs)

YearCitationAltmetricsLink
2014Kha CT, Nguyen MH, Roach PD, Stathopoulos CE, 'A storage study of encapsulated Gac oil powder', Program & Abstracts. 47th Annual AIFST Convention, Melbourne (2014) [E3]
Co-authorsMinh Nguyen
2014Tran T, 'Changes in some physiochemical properties in Gac (Momordica cochinchinensis Spreng.) fruit during storage', The 3rd Asia Pacific Symposium on Postharvest Research, Education and Extension, Ho Chi Minh City (2014) [E3]
Co-authorsMinh Nguyen
2014Goldsmith CD, Vuong QV, Sadeqzadeh E, Stathopoulos CE, Roach PD, Scarlett CJ, 'ANTI-PROLIFERATIVE CAPACITY OF OLEUROPEIN RICH OLIVE LEAF EXTRACTS AGAINST PANCREATIC CANCER CELLS', ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY (2014) [E3]
Author URL
Co-authorsC Scarlett, Vanquan Vuong
2014Kha CT, Nguyen MH, Roach PD, Stathopoulos CE, 'Gac oil extraction and microencapsulation by spray drying', Book of Abstracts, Chiang Mai Province, Thailand (2014) [E3]
Co-authorsMinh Nguyen
2013Kha CT, Nguyen MH, Roach PD, Stathopoulos CE, 'Optimisation of encapsulation by spray drying Gac oil using whey protein concentrate and gum Arabic', Program & Abstracts. 46th Annual AIFST Convention, Brisbane (2013) [E3]
Co-authorsMinh Nguyen
2013Kha CT, Nguyen MH, Roach PD, Stathopoulos CE, 'Gac fruit: Bioactive compounds, Processing and Utilizations', Proceedings of FABE 2013 International Conferences on Food and Biosystems Engineering, Skiathos Island, Greece (2013) [E1]
Co-authorsMinh Nguyen
2013Kha CT, Nguyen Minh H, Roach Paul D, Stathopoulos, 'Effects of formulations on Gac oil emulsion stability for microencapsulation', Proceedings of FaBE 2013, Skiathos Island, Greece (2013) [E1]
Co-authorsMinh Nguyen
2012Tan SP, Parks S, Stathopoulos C, Roach PD, 'Phenolic compounds and antioxidant activity of six varieties of greenhouse grown bitter melons', Posters. 7th International Postharvest Symposium, Kuala Lumpur, Malaysia (2012) [E3]
2012Kha CT, Nguyen MH, Stathopoulos C, Roach PD, 'Optimisation of pretreatments prior to hydraulic press of Gac aril oil using response surface methodology', Program & Abstracts. 45th Annual AIFST Convention, Adelaide, SA (2012) [E3]
Co-authorsMinh Nguyen
2011Tan SP, Heenan CN, Stathopoulos C, Roach PD, 'Measurement of exogenous thiamine in cereals', Australasian Medical Journal, Queenstown, NZ (2011) [E3]
2011Vuong QV, Tan SP, Stathopoulos C, Roach PD, 'Improving the extraction of the catechins from green tea in teabags using the microwave oven', Australasian Medical Journal, Queenstown, NZ (2011) [E3]
Co-authorsVanquan Vuong
2011Naylor C, Lucock MD, Veysey MJ, Naumovski N, Boyd L, Dufficy L, et al., 'Folate nutritional genetics and degenerative disorders in the elderly with special reference to hypertension and depression', Australasian Medical Journal, Queenstown, NZ (2011) [E3]
Co-authorsMark Lucock, Martin Veysey, Zoe Yates
2010Kha CT, Nguyen MH, Roach PD, 'Drying of Gac fruit aril for incorporation into foods', Abstract Book. IUFOST 2010: 15th World Congress of Food Science & Technology, Cape Town, South Africa (2010) [E3]
Co-authorsMinh Nguyen
2010Naumovski N, Blades BL, Roach PD, 'The effects of epigallocatechin-3-gallate on blood lipids in humans with moderately elevated cholesterol - a pilot study', Proceedings of the Nutrition Society of Australia, Perth, WA (2010) [E3]
2010Vuong QV, Durel M, Tan S, Roach PD, Stathopoulos C, 'Utilisation of EGCG in tofu as functional food', Proceedings of the Nutrition Society of Australia, Perth, WA (2010) [E3]
Co-authorsVanquan Vuong
2010Krahe JC, Golding J, Roach PD, 'Enhancing the theanine content to strengthen green tea as a functional food', Proceedings of the Nutrition Society of Australia, Perth, WA (2010) [E3]
2010Vuong QV, Nguyen MH, Golding J, Roach PD, 'Improving the efficiency of hot water extraction of theanine from green tea', Proceedings of the Nutrition Society of Australia, Perth, WA (2010) [E3]
Co-authorsVanquan Vuong, Minh Nguyen
2010Golding J, Roach PD, Krahe JC, Satyan S, Onozawa A, Ito M, 'Maintaining quality of Japanese-style green tea after harvest', Acta Horticulturae, Turkey (2010) [E1]
2010Chang J, Lucock MD, Wai R, Boyd L, Ng X, Skinner VM, et al., 'Dietary folic acid, red cell folate and the risk of adenomatous polyps in an Australian population', Journal of Gastroenterology and Hepatology. Special Issue: Australian Gastroenterology Week 2010, Gold Coast, QLD (2010) [E3]
Co-authorsZoe Yates, Martin Veysey, Mark Lucock
2009Veysey MJ, Boyd L, Wai R, Ng X, Skinner V, Tang S, et al., 'Preliminary data to support a relationship between taste genetics, folate status, folate genes and the development of colonic adenomas: A novel nutrigenomic circuit', Gastro 2009 UEGW/WCOG: Scientific Programme & EACCME, London, UK (2009) [E3]
Co-authorsMark Lucock, Martin Veysey, Zoe Yates
2009Boyd L, Lucock MD, Wai R, Ng X, Yates ZR, Skinner V, et al., 'Folate status: A recognised determinant of colorectal neoplasia may be modified by bitter taste perception and genetics', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
Co-authorsMark Lucock, Martin Veysey, Zoe Yates
2009Naumovski N, Roach PD, 'Determination of epigallocatechin gallate in human plasma using high pressure liquid chromatography with mass spectrometer detection', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
2009Naumovski N, Roach PD, 'Effects of ingestion conditions on the oral bioavailability of epigallocatechin gallate (EGCG) after a single-dose administration in healthy humans', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
2009Krahe JC, Golding J, Roach PD, 'The relative levels of the two main catechins of green tea, EGCG and EGC, change markedly during the tea growing season on the NSW Central Coast', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
2009Vuong QV, Nguyen V, Golding J, Roach PD, 'The content of bioactive constituents as a quality index for Vietnamese teas', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
Co-authorsVanquan Vuong
2009Vuong QV, Nguyen MH, Golding J, Roach PD, 'Development of a microwave-assisted water method for the extraction of green tea bioactive constituents', Proceedings of the Nutrition Society of Australia, Newcastle, NSW (2009) [E3]
Co-authorsVanquan Vuong, Minh Nguyen
2008Ng X, Boyd L, Dufficy L, Naumovski N, Blades BL, Travers C, et al., 'Folate genes and risk for hypertension in an elderly population sample', 3rd Asia Pacific Nutrigenomics Conference: Conference Program & Information, Melbourne, VIC (2008) [E3]
Co-authorsMark Lucock, Zoe Yates, Martin Veysey
2008Wai RKH, Boyd L, Ng X, King K, Skinner V, Roach PD, et al., 'Preliminary evidence that bitter taste perception can modify folate status: A recognised risk factor for colorectal neoplasia', Journal of Gastroenterology and Hepatology, Brisbane, QLD (2008) [E3]
Co-authorsMartin Veysey, Zoe Yates, Mark Lucock
2008Boyd L, Wai RKH, Ng X, King K, Skinner V, Roach PD, et al., 'A preliminary study to examine whether common folate polymorphisms are risk factors for the development of adenomatous polyps', Journal of Gastroenterology and Hepatology, Brisbane, QLD (2008) [E3]
Co-authorsMark Lucock, Zoe Yates, Martin Veysey
2007Pengelly AR, Lucock MD, Roach PD, 'A method for assessing the variation in Flavonoid levels of Dodonaea viscosa subspecies Angustifolia, a traditional wound healing medicinal herb', 50 Years of the Phytochemical Society of Europe: Highlights in the Evolution of Phytochemistry. Abstract Book, Cambridge, U.K. (2007) [E3]
Co-authorsMark Lucock
2007Naumovski N, Roach PD, 'Epigallocatechin gallate lowers the serum lathosterol to squalene ratio, a novel index of cholesterol synthesis, in the hypercholesterolaemic rabbit model', Asia Pacific Journal of Clinical Nutrition, Auckland (2007) [E3]
2007Krahe JC, Roach PD, 'The effect of temperature on (-)-epigallocatechin gallate, the major catechin in green tea', Asia Pacific Journal of Clinical Nutrition, Auckland (2007) [E3]
2007Naumovski N, Roach PD, 'The serum lathosterol to squalene ratio is lowered by epigallocatechin gallate', Australian Atheroscherosis Society Annual Scientific Meeting 2007 Abstracts, Fremantle (2007) [E3]
2006Roach PD, Dufficy L, Naumovski N, Ng X, Blades BL, Travers C, et al., 'The association of dietary folate with serum and red cell folate is modulated by the G80A reduced folate carrier single nucloetide polymorphism in an elderly population sample', The Proceedings of the Nutrition Society of Australia, Sydney, NSW (2006) [E3]
Co-authorsMark Lucock, Martin Veysey
2006Naumovski N, Blades BL, Roach PD, 'The green tea catechin,epigallocatechin gallate, lowers serum cholesterol and the cholesterol synthesis precursor, lathosterol, but not their ratio in the cholesterol-fed rabbit', The Proceedings of the Nutrition Society of Australia, Sydney, NSW (2006) [E3]
2006Blades BL, Naumovski N, Roach PD, Lucock MD, Travers C, Lewis PR, et al., 'Vitamin B12 is a better inverse correlate for homocysteine than folate in an elderly population sample', Atherosclerosis Supplements, Rome, Italy (2006) [E3]
Co-authorsMartin Veysey, Mark Lucock
2006Roach PD, Naumovski N, Blades BL, Lucock MD, Travers C, Lewis PR, et al., 'Serum vitamin B12 is inversely related to blood pressure and anxiety in elderly women but not in elderly men', Atherosclerosis Supplements, Rome, Italy (2006) [E3]
Co-authorsMartin Veysey, Mark Lucock
2006Roach PD, Le VH, Naumovski N, Blades BL, 'Despite its instability, epigallocatechin gallate effectively lowers serum cholesterol in the hypercholesterolaemic rabbit', Atherosclerosis Supplements, Rome, Italy (2006) [E3]
2006Hirun S, Roach PD, 'Stability of Epigallocatechin gallate (EGCG) in a Strawberry Sorbet', 13th World Congress of Food Science & Technology, Nantes, France (2006) [E3]
2006Hirun S, Roach PD, 'Improved Method for the Analysis of Catechins in Green Tea', 13th World Congress of Food Science & Technology, Nantes, France (2006) [E3]
2006Roach PD, Golding J, Le BN, Nguyen DD, Vuong VQ, Naumovski N, Nguyen N, 'Indices of green tea quality from the Japanese perspective', 39th Annual AIFST Convention 2006, Adelaide, South Australia (2006) [E3]
2006Hirun S, Roach PD, 'Stability of (-)- epigallocatechin gallate (EGCG) in a strawberry sorbet', 39th Annual AIFST Convention 2006, Adelaide, South Australia (2006) [E3]
2006Naumovski N, Roach PD, Blades BL, Lucock MD, Travers C, Lewis PR, et al., 'Homocysteine, vitamin B12 and folate in an elderly population sample', Heart Foundation Conference and Scientific Meeting, Sydney, NSW, Australia (2006) [E3]
Co-authorsMartin Veysey, Mark Lucock
2006Roach PD, 'Australian Research on Green Tea and Health Benefits', Proceedings of the Australian Green Tea Conference 2006, Gosford, Australia (2006) [E2]
2006Naumovski N, Blades BL, Roach PD, 'Epigallocatechin gallate lowers cholesterol and lathosterol but not their ratio in the cholesterol-fed rabbit', Program & Abstracts Australian Atherosclerosis Society, Couran Cove Island, Queensland (2006) [E3]
2006Roach PD, Dufficy L, Naumovski N, Ng X, Blades BL, Travers C, et al., 'The association of blood pressure with dietary folate in elderly females and its modulation by the G80A reduced folate carrier SNP', Program & Abstracts Australian Atherosclerosis Society, Couran Cove Island, Queensland (2006) [E3]
Co-authorsMark Lucock, Martin Veysey
2005Roach PD, Naumovski N, Dufficy L, Lucock MD, Blades BL, Lewis (Ext) PR, et al., 'Folate, viamin B12, plasma thiols and cognitive funciton in an elderly population sample', Asia Pacific Journal of Clinical Nutrition, Melbourne, Victoria (2005) [E3]
Co-authorsMartin Veysey, Mark Lucock
2005Hirun S, Roach PD, 'Stability of (-)- epigallocatechin gallate (EGCG) in a strawberry sorbet', Asia Pacific Journal of Clinical Nutrition, Melbourne, Victoria (2005) [E3]
2005Roach PD, Blades BL, Lucock MD, Naumovski N, Dufficy L, Lewis (Ext) PR, et al., 'Serum Vitamin B12 is Inversely Related to Blood Pressure in Women but not Men in an Elderly Population Sample', Proceedings of Annual Scientific Meeting 2005, Darwin, NT (2005) [E3]
Co-authorsMark Lucock, Martin Veysey
2003Roach PD, Naumovski N, Blades BL, Lewis P, 'Plasma homocysteine in an Australian population sample', Atherosclerosis Supplements, Kyoto, Japan (2003) [E3]
2003Blades BL, Roach PD, Lewis P, 'The prevalence and treatment of hypercholesterolaemia in an Australian population sample', Atherosclerosis Supplements, Kyoto, Japan (2003) [E3]
2003Naumovski N, Roach PD, Blades B, Lewis P, 'The relationship between plasma homocysteine, red cell folate and plasma vitamin B12 in a sample of the New South Wales Central Coast population.', Asia Pac J Clin Nutr, Australia (2003)
Author URL
2002Roach PD, Salleh MN, Runnie I, Mohamed S, Abeywardena MY, 'Inhibition of low density lipoprotein oxidation and upregulation of the low density lipoprotein receptor of human liver HEPG2 cells by tropical plant extracts', Australian Atherosclerosis Society:Annual Scientific Meeting, Sydney (2002) [E3]
Show 50 more conferences

Other (1 outputs)

YearCitationAltmetricsLink
2014Hoang V, Nguyen M, Parks S, Roach P, Golding J, 'Preliminary investigation into the postharvest characteristics of Gac fruit (Momordica cochinchinensis Spreng.) grown in Australia', ( pp.173-173). Ho Chi Minh City: ISHS (2014) [O1]
Co-authorsMinh Nguyen
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Grants and Funding

Summary

Number of grants14
Total funding$924,570

Click on a grant title below to expand the full details for that specific grant.


20121 grants / $18,500

Extraction and isolation of plant phenolics$18,500

Funding body: NSW Trade & Investment

Funding bodyNSW Trade & Investment
Project TeamDoctor Quan Vuong, Doctor John Golding, Doctor Paul Roach
SchemeGosford Horticultural Institute
RoleInvestigator
Funding Start2012
Funding Finish2012
GNoG1200689
Type Of FundingOther Public Sector - State
Category2OPS
UONY

20111 grants / $15,000

Roach-Emerging Research Leaders Program 2011$15,000

Funding body: University of Newcastle

Funding bodyUniversity of Newcastle
Project TeamDoctor Paul Roach
SchemeEmerging Research Leaders Program
RoleLead
Funding Start2011
Funding Finish2011
GNoG1101113
Type Of FundingInternal
CategoryINTE
UONY

20101 grants / $36,364

Is retirement village living good for health: Comparing the health of older adults living in retirement villages and the community$36,364

Funding body: Valhalla Village Pty Ltd

Funding bodyValhalla Village Pty Ltd
Project TeamAssociate Professor Martin Veysey, Dr Peter Lewis, Associate Professor Mark Lucock, Doctor Paul Roach, Dr David Kennedy
SchemeLinkage Projects Partner funding
RoleInvestigator
Funding Start2010
Funding Finish2010
GNoG1000936
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

20091 grants / $61,281

The Association between Folate Nutritional Status and Folate Gene Polymorphisms in an Elderly Australian Population$61,281

Funding body: Central Coast Local Health District

Funding bodyCentral Coast Local Health District
Project TeamAssociate Professor Martin Veysey, Doctor Zoe Yates, Associate Professor Mark Lucock, Doctor Paul Roach
SchemeResearch Sponsorship Scholarship
RoleInvestigator
Funding Start2009
Funding Finish2009
GNoG0190658
Type Of FundingOther Public Sector - State
Category2OPS
UONY

20084 grants / $660,923

Is retirement village living good for health: Comparing the health of older adults living in retirement villages and the community$390,173

Funding body: ARC (Australian Research Council)

Funding bodyARC (Australian Research Council)
Project TeamAssociate Professor Martin Veysey, Dr Peter Lewis, Associate Professor Mark Lucock, Doctor Paul Roach, Dr David Kennedy
SchemeLinkage Projects
RoleInvestigator
Funding Start2008
Funding Finish2008
GNoG0188386
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

Is retirement village living good for health: Comparing the health of older adults living in retirement villages and the community$170,750

Funding body: Central Coast Local Health District

Funding bodyCentral Coast Local Health District
Project TeamAssociate Professor Martin Veysey, Dr Peter Lewis, Associate Professor Mark Lucock, Doctor Paul Roach, Dr David Kennedy
SchemeLinkage Projects Partner funding
RoleInvestigator
Funding Start2008
Funding Finish2008
GNoG0188995
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

Is retirement village living good for health: Comparing the health of older adults living in retirement villages and the community$85,000

Funding body: UnitingCare Ageing NSW.ACT

Funding bodyUnitingCare Ageing NSW.ACT
Project TeamAssociate Professor Martin Veysey, Dr Peter Lewis, Associate Professor Mark Lucock, Doctor Paul Roach, Dr David Kennedy
SchemeLinkage Projects Partner funding
RoleInvestigator
Funding Start2008
Funding Finish2008
GNoG0189230
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

Is retirement village living good for health: Comparing the health of older adults living in retirement villages and the community$15,000

Funding body: Urbis Pty Ltd

Funding bodyUrbis Pty Ltd
Project TeamAssociate Professor Martin Veysey, Dr Peter Lewis, Associate Professor Mark Lucock, Doctor Paul Roach, Dr David Kennedy
SchemeLinkage Projects Partner funding
RoleInvestigator
Funding Start2008
Funding Finish2008
GNoG0189232
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

20071 grants / $78,000

Optimising the yield and quality of NSW Central Coast green tea and maximising the use of green tea constituents$78,000

Funding body: Rural Industries Research & Development Corporation

Funding bodyRural Industries Research & Development Corporation
Project TeamDoctor Paul Roach, Doctor John Golding
SchemePostgraduate Research Scholarship
RoleLead
Funding Start2007
Funding Finish2007
GNoG0187327
Type Of FundingOther Public Sector - Commonwealth
Category2OPC
UONY

20061 grants / $1,000

XIV International Symposium on Atherosclerosis, 18-22 June 2006$1,000

Funding body: University of Newcastle

Funding bodyUniversity of Newcastle
Project TeamDoctor Paul Roach
SchemeTravel Grant
RoleLead
Funding Start2006
Funding Finish2006
GNoG0186661
Type Of FundingInternal
CategoryINTE
UONY

20051 grants / $32,062

Production of high quality export green tea through integrated management $32,062

Funding body: Rural Industries Research & Development Corporation

Funding bodyRural Industries Research & Development Corporation
Project TeamDoctor Paul Roach
SchemeResearch and Development Project
RoleLead
Funding Start2005
Funding Finish2005
GNoG0186031
Type Of FundingAust Competitive - Commonwealth
Category1CS
UONY

20032 grants / $20,000

Quality indices of green tea grown on the NSW Central Coast$10,000

Funding body: University of Newcastle

Funding bodyUniversity of Newcastle
Project TeamDoctor Paul Roach, Dr Douglas Stuart
SchemeCollaborative Research Grant
RoleLead
Funding Start2003
Funding Finish2003
GNoG0183556
Type Of FundingInternal
CategoryINTE
UONY

Quality indices of green tea grown on the NSW Central Coast$10,000

Funding body: NSW Agriculture

Funding bodyNSW Agriculture
Project TeamDoctor Paul Roach, Dr Douglas Stuart
SchemeUniversity Grant Partner funding
RoleLead
Funding Start2003
Funding Finish2003
GNoG0183557
Type Of FundingNot Known
CategoryUNKN
UONY

20021 grants / $1,440

Plasma homocysteine levels in the central coast population of New South Wales.$1,440

Funding body: National Heart Foundation of Australia

Funding bodyNational Heart Foundation of Australia
Project TeamDoctor Paul Roach
SchemeVacation Scholarship
RoleLead
Funding Start2002
Funding Finish2002
GNoG0182639
Type Of FundingDonation - Aust Non Government
Category3AFD
UONY
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Research Supervision

Current Supervision

CommencedResearch Title / Program / Supervisor Type
2014Improving Yield and Quality of Bitter Melon Fruits (Momordica Charantia)
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2014Extraction of Bioactives and Oil from Gac Seeds
Food Science & Biotechnology, Faculty of Science and Information Technology
Principal Supervisor
2013Olive Waste Products as a Source of Phenolic Compounds with Chemotherapeutic and Chemopreventative Efficacy Against Pancreatic Cancer
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2013Extraction and Encapsulation of Lutein-Rich Oil from Gac Pulp and Peel
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2012Evaluation of the Effectiveness 1-MCP in Combination with MAP for Extending the Storage Life of Tomato and Leafy Vegetables
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2012Improving Production and Quality of Gac Fruits
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2011Extraction and Encapsulation of Bioactive Compounds from Bitter Melon
Food Science & Biotechnology, Faculty of Science and Information Technology
Principal Supervisor
2011Role of Nitric Oxide in the Preservation of Fresh Cut Apple Slices
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor

Past Supervision

YearResearch Title / Program / Supervisor Type
2015Extraction and Utilisation of Apple Juice Pomace Phenolics
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2014The Role of Folic Acid Related Nutritional Genetics in Common Chronic Degenerative Disorders
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2014Gac Oil Extraction and Encapsulation by Spray Drying
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2012The Effects of (-)-Epigallocatechin-3-O-gallate (EGCG), a Green Tea Catechin, on Blood Cholesterol
Food Science & Biotechnology, Faculty of Science and Information Technology
Sole Supervisor
2012Optimising the Quality of NSW Central Coast Green Tea
Food Science & Biotechnology, Faculty of Science and Information Technology
Principal Supervisor
2012Extraction and Preparation of Bioactive Components from Green Tea
Food Science & Biotechnology, Faculty of Science and Information Technology
Principal Supervisor
2010Effects of Different Drying Processes on the Physicochemical and Antioxidant Properties of Gac Fruit Powder
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2009Flavonoid Profile and Bioactivity of Dodonaea Viscosa (Australian Hop Bush) - An Indigenous Shrub
Food Science & Biotechnology, Faculty of Science and Information Technology
Principal Supervisor
2008Evaluation of the Quantities and Values of Byproducts of the Fish Processing Industry in Vietnam with Special Reference to the Utilization of Fish Bone
Food Science & Biotechnology, Faculty of Science and Information Technology
Co-Supervisor
2007Inclusion of Catechins from Green Tea into Functional Foods to Lower Cholesterol in Humans
Food Science & Biotechnology, Faculty of Science and Information Technology
Sole Supervisor
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Dr Paul Roach

Position

Senior Lecturer
School of Environmental and Life Sciences
Faculty of Science and Information Technology

Focus area

Applied Sciences

Contact Details

Emailpaul.roach@newcastle.edu.au
Phone(02) 4348 4129
Fax(02) 4348 4145

Office

RoomSOE1.23
BuildingScience Offices
LocationOurimbah
10 Chittaway Road
Ourimbah, NSW 2258
Australia
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