Stabilizing Effect of Ascorbic Acid on Green Tea Catechins

Journal of Agricultural and Food Chemistry

Volumn 46, Issue 7, 1998, Pages 2512-2516

  Chen, Zhen Yu ^a   Zhu, Qin Yan ^a   Wong, Yeun Fan ^a   Zhang, Zesheng ^a   Chung, Hau Yin ^a  

^a CHINESE UNIVERSITY OF HONG KONG   (Hong Kong)

Author keywords

Catechin; Epicatechin; Epicatechin gallate; Epigallocatechin; Epigallocatechin gallate; Longjing tea

Indexed keywords

EID: 0542393387     PISSN: 00218561     EISSN: None     Source Type: Journal    
DOI: 10.1021/jf971022g     Document Type: Article

References (25)

1. Chen, Z. Y.; Chan, P. T. Antioxidative activity of green tea catechins in canola oil. Chem. Phys. Lipids 1996, 82, 163-172.
2. Chen, Z. Y.; Chan, P. T.; Ma, H. M.; Fung, K. P.; Wang, J. Antioxidative effect of ethanol tea extracts on oxidation of canola oil. J. Am. Oil Chem. Soc. 1996, 73, 375-380.
3. Ding, Z. Y.; Chen, Y.; Zhou, M.; Fang, Y. Z. Inhibitory effect of green tea polyphenol and morin on the oxidative modification of low-density lipoprotein. Chin. J. Pharmacol. Toxicol. 1992, 6, 263-266.
4. Guo, Q.; Zha, B.; Li, M.; Shen, S.; Xin, W. Studies on protective mechanisms of four components of green tea polyphenols against lipid peroxidation in synaptsomes. Biochim. Biophys. Acta 1996, 1304, 210-222.
5. Hara, M.; Okushio, K. Stability of catechins in aqueous solutions. Jpn. Kokai Tokkyo Koho 1989; JP 01233277 A2890919.
6. Henry, J. P.; Stephens-Larson, P. Reduction of chronic psychosocial hypertension in mice by decaffeinated tea. Hypertension 1984, 6, 437-444.
7. Hertog, M. G. L.; Feskens, E. J. M.; Hollman, P. C. H.; Katan, M. B.; Kromhout, D. Dietary antioxidant flavonoids and risk of coronary heart disease: The Zutphen Elderly Study. Lancet 1993, 342, 1007-1011.
8. Imai, K.; Nakachi, K. Cross sectional study of effects of drinking green tea on cardiovascular and liver disease. Biochem. Med. J. 1985, 310, 693-696.
9. Kiatgrajai, P.; Wellons, J. D.; Gollob, L.; White, J. D. Kinetics of epimerization of (+)-catechin and its rearrangement to catechinic acid. J. Org. Chem. 1982, 47, 2910-2912.
10. Komatsu, Y.; Hisanobu, Y.; Suematsu, S.; Matsuda, R.; Saigo, H.; Hara, K. Stability of functional constituents in canned tea drinks during extraction, processing and storage. In Proceedings of the International Symposium on Tea Science, Shizuoka, Japan, pp 571-575.
11. Kono, S.; Shinchi, K.; Ikeda, N.; Yanai, F.; Imanishi, K. Green tea consumption and serum lipid profile: a cross-sectional study in Northern Kyushu. Jpn. Prev. Med. 1992, 21, 526-531.
12. Matsumoto, N.; Tono-oka, F.; Ishigaki, A.; Okushio, K.; Hara, Y. The fate of (-)epigallocatechin gallate (EGCg) in the digestive tract of rats. In Proceedings of the International Symposium on Tea Science, Shizuoka, Japan, 1991; pp 253-257.
13. Miura, S.; Watanable, J.; Tomita, T.; Sano, M.; Tomita, S. The inhibitory effects of tea polyphenol (flavan-3-ol derivatives) on Cu+2 mediated oxidative modification of low-density lipoproteins. Biol. Pharm. Bull. 1994, 17, 1567-1572.
14. Nanjo, F.; Goto, K.; Seto, R.; Suzuki, M.; Sakai, M.; Hara, Y. Scavenging effects of tea catechins and their derivatives on 1,1-diphenyl-2-picryhydrazyl radical. Free Radical Biol. Med. 1996, 21, 895-902.
15. Okushio, K.; Matsumoto, N.; Kohri, T.; Susuki, M.; Nanjo, F.; Hara Y. Absorption of tea catechins into rat portal vein. Biol. Pharm. Bull. 1998, 19, 326-329.
16. Packer, J. E.; Slater, T. F.; Wilson, R. L. Direct observation of a free radical interaction between vitamin E and vitamin C. Nature 1979, 278, 737-738.
17. Shi, S. T.; Wang, Z. Y.; Smith, T. J.; Hong, J. Y.; Chen, W. F.; Ho, C. T.; Yang, C. S. Effects of green tea and black tea on 4-(methylnitrosamine)-1-(3-pyridyl)-1-butanone bioactivation, DNA methylation and lung tumorigenesis in A/J mice. Cancer Res. 1994, 54, 4641-4647.
18. Suematsu, S.; Hisanobu, Y.; Saigo, H.; Matsuda, R.; Hara, K.; Komatsu, Y. Effect of pH on stability of constituents in canned tea drinks. Studies on preservation of constituents in canned tea drink I. J. Jpn. Soc. Food Sci. Technol. 1992, 39, 178-182.
19. Sullivan, D. M.; Carpenter, D. E. Methods of Analysis for Nutrition Labelling; AOAC International: Arlington, VA, 1993; pp 563-565.
20. Unno, T.; Kondo, K.; Itakura, H.; Takeo, T. Analysis of (-) epigallocatechin gallate in human serum obtained after ingesting green tea. Biosci. Biotechnol. Biochem. 1996, 60, 2066-2068.
21. Wang, Z. Y.; Huang, M. T.; Lou, Y. R.; Xie, J. G.; Reuhl, K. R.; Newmark, H. L.; Ho. C. T.; Yang, C. S.; Conney, A. H. Inhibitory effects of black tea, green tea, decaffeinated black tea and decaffeinated green tea on ultraviolet B lightinduced skin carcinogenesis in 7,12-dimethylbenz[a]anthracene-initiated SKH-I mice. Cancer Res. 1994, 54, 3428-3435.
22. Yoshioka, H.; Sugiura, K.; Kawahara, R.; Fujita, T.; Makino, M.; Kamiya, M.; Tsuyumu, S. Formation of radicals and chemiluminescence during the autoxidation of tea catechins. Agric. Biol. Chem. 1991, 55, 2717-2723.
23. Zhang, A; Chan, P. T.; Luk, Y. S.; Ho, W. K. K.; Chen, Z. Y. Inhibitory effect of jasmine green tea epicatechin isomers on LDL-oxidation. J. Nutr. Biochem. 1997a, 8, 334-340.
24. Zhang, A.; Zhu, Q. Y; Luk, Y. S.; Ho, K. Y.; Fung, K. P.; Chen, Z. Y. Inhibitory effects of jasmine green tea epicatechin isomers on free radical-induced lysis of red blood cells. Life Sci. 1997b, 61, 383-394.
25. Zhu, Q. Y.; Zhang, A.; Tsang, D.; Huang, Y.; Chen, Z. Y. Stability of green tea catechins. J. Agric. Food Chem. 1997, 45, 4624-4628.