Massive accumulation of gallic acid and unique occurrence of myricetin, quercetin, and kaempferol in preparing old oolong tea

Journal of Agricultural and Food Chemistry

Volumn 56, Issue 17, 2008, Pages 7950-7956

  Lee, Viola S Y ^a   Dou, Jianpeng ^b   Chen, Ronald J Y ^a   Lin, Ruey Song ^a   Lee, Maw Rong ^a   Tzen, Jason T C ^a,c  

^a NATIONAL CHUNG HSING UNIVERSITY   (Taiwan)

^b JILIN UNIVERSITY   (China)

^c AGRICULTURAL BIOTECHNOLOGY RESEARCH CENTER   (Taiwan)

Author keywords

EGCG; Flavonol; Flavonol glycosides; Gallic acid; Old oolong tea

Indexed keywords

CATECHIN; DRUG DERIVATIVE; EPIGALLOCATECHIN GALLATE; FLAVONOID; GALLIC ACID; KAEMPFEROL; KAEMPFEROL DERIVATIVE; MYRICETIN; QUERCETIN;

ARTICLE; CHEMISTRY; DESICCATION; PLANT LEAF; TEA; TIME;

CAMELLIA SINENSIS; CATECHIN; DESICCATION; FLAVONOIDS; GALLIC ACID; KAEMPFEROLS; PLANT LEAVES; QUERCETIN; TEA; TIME FACTORS;

EID: 52649119107     PISSN: 00218561     EISSN: None     Source Type: Journal    
DOI: 10.1021/jf801688b     Document Type: Article

References (20)

1. Hashimoto, F.; Nonaka, G.; Nishioka, I. Tannins and related Compounds. LVI. Isolation of four new acylated flavan-3-ols from oolong tea. Chem. Pharm. Bull. 1987, 35 (1), 611-616.
2. Hashimoto, F.; Nonaka, G.; Nishioka, I. Tannins and related compounds. LXIX. Isolation and structure elucidation of B,B′-linked bisflavanoids, theasinensins D-G and oolongtheanin from oolong tea. Chem. Pharm. Bull. 1988, 36 (2), 1676-1684.
3. Hashimoto, F.; Nonaka, G.; Nishioka, I. Tannins and related compounds. XC. 8-C-ascorbyl (-)-epigallocatechin 3-O-gallate and novel dimeric flavan-3-ols, oolonghomobisflavans A and B, from oolong tea. Chem. Pharm. Bull. 1989, 37 (3), 3255-3263.
4. Dou, J.; Lee, V. S.; Tzen, J. T.; Lee, M. R. Identification and comparison of phenolic compounds in the preparation of oolong tea manufactured by semifermentation and drying processes. J. Agric. Food Chem. 2007, 55, 7462-7468.
5. Dou, J.; Lee, V. S.; Tzen, J. T.; Lee, M. R. Rapid identification of acylated flavonol tetraglycosides in oolong teas using HPLC-MSn. Phytochem. Anal. 2008, 19, 251-257.
6. Lee, V. S.; Chen, R. J.; Liao, Y. W.; Tzen, J. T.; Chang, C. I. Structural determination and DPPH radical scavenging activity of two acylated flavonoid tetraglycosides in oolong tea (Camellia sinensis). Chem. Pharm. Bull. 2008, 56, 851-853.
7. Haslam, E. Thoughts on thearubigins. Phytochemistry 2003, 64, 61-73.
8. Wang, R.; Zhou, W.; Jiang, X. Reaction kinetics of degradation and epimerization of epigallocatechin gallate (EGCG) in aqueous system over a wide temperature range. J. Agric. Food Chem. 2008. 56, 2694-2701.
9. Inoue, M.; Suzuki, R.; Koide, T.; Sakaguchi, N.; Ogihara, Y.; Yabu, Y. Antioxidant, gallic acid, induces apoptosis in HL-60RG cells. Biochem. Biophys. Res. Commun. 1994, 204, 898-904.
10. Constant, J. Alcohol, ischemic heart disease, and the French paradox. Coron. Artery Dis. 1997, 8, 645-649.
11. Sridhar, S. B.; Sheetal, U. D.; Pai, M. R.; Shastri, M. S. Preclinical evaluation of the antidiabetic effect of Eugenia jambolana seed powder in streptozotocin-diabetic rats. Braz. J. Med. Biol. Res. 2005, 38, 463-468.
12. Liu, Z.; Schwimer, J.; Liu, D.; Greenway, F. L.; Anthony, C. T.; Woltering, E. A. Black raspberry extract and fractions contain angiogenesis inhibitors. J. Agric. Food Chem. 2005, 53, 3909-3915.
13. Kim, Y.-J. Antimelanogenic and antioxidant properties of gallic acid. Biol. Pharm. Bull. 2007, 30, 1052-1055.
14. Jadon, A.; Bhadauria, M.; Shukla, S. Protective effect of Terminalia belerica Roxb. and gallic acid against carbon tetrachloride induced damage in albino rats. J. Ethnopharmacol. 2007, 109, 214-218.
15. Raina, K.; Rajamanickam, S.; Deep, G.; Singh, M.; Agarwal, R.; Agarwal, C. Chemopreventive effects of oral gallic acid feeding on tumor growth and progression in TRAMP mice. Mol. Cancer Ther. 2008, 7, 1258-1267.
16. Aherne, S. A.; O'Brien, N. M. Dietary flavonols: Chemistry, food content, and metabolism. Nutrition 2002, 18, 75-81.
17. Harwood, M.; Danielewska-Nikiel, B.; Borzelleca, J. F.; Flamm, G. W.; Williams, G. M.; Lines, T. C. A critical review of the data related to the safety of quercetin and lack of evidence of in vivo toxicity, including lack of genotoxic/carcinogenic properties. Food Chem. Toxicol. 2007, 45, 2179-2205.
18. Cross, H. J.; Tilby, M.; Chipman, K.; Ferry, D. R.; Gescher, A. Effect of quercetin on the genotoxic potential of cisplatin. Int. J. Cancer 1996, 66, 404-408.
19. Middleton, E., Jr.; Kandaswami, C.; Theoharides, T. C. The effects of plant flavonoids on mammalian cells: Implications for inflammation, heart disease and cancer. Pharmacol. Rev. 2000, 42, 673-751.
20. Lotito, S. B.; Frei, B. Consumption of flavonoid-rich foods and increased plasma antioxidant capacity in humans: Cause, consequence, or epiphenomenon. Free Radical Biol. Med. 2006, 41, 1727-1746.