Phytochemical Composition and Antioxidant Capacity of 30 Chinese Teas

Antioxidants
Guo-Yi TangHua-Bin Li

Abstract

Tea has been reported to prevent and manage many chronic diseases, such as cancer, diabetes, obesity, and cardiovascular diseases, and the antioxidant capacity of tea may be responsible for these health benefits. In this study, the antioxidant capacities of fat-soluble, water-soluble, and bound-insoluble fractions of 30 Chinese teas belonging to six categories, namely green, black, oolong, dark, white, and yellow teas, were systematically evaluated, applying ferric-reducing antioxidant power and Trolox equivalent antioxidant capacity assays. In addition, total phenolic contents of teas were determined by Folin-Ciocalteu method, and the contents of 18 main phytochemical compounds in teas were measured by high-performance liquid chromatography (HPLC). The results found that several teas possessed very strong antioxidant capacity, and caffeine, theaflavine, gallic acid, chlorogenic acid, ellagic acid, and kaempferol-3-O-glucoside, as well as eight catechins, were the main antioxidant compounds in them. Thus, these teas could be good natural sources of dietary antioxidants, and their extracts might be developed as food additives, nutraceuticals, cosmetics, and pharmaceuticals.

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Citations

Dec 28, 2019·Antioxidants·Dimitrios Stagos
Dec 11, 2019·International Journal of Molecular Sciences·Guo-Yi TangHua-Bin Li
Sep 7, 2019·Nutrients·Thomas Senoner, Wolfgang Dichtl
Jan 28, 2021·Nutrients·Yoko Kawanishi On Behalf Of The Japan Environment And Children's Study Group
Nov 20, 2020·Antioxidants·Hsuan-Ti HuangChwan-Li Shen
Dec 4, 2020·Antibiotics·Carmen CuruțiuAlina Maria Holban
Mar 9, 2021·International Journal of Biological Macromolecules·Miao-Hua HanJing Zhuang
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Datu Agasi Mohd KamalMohd Helmy Mokhtar
Jun 13, 2021·Free Radical Biology & Medicine·Ao ShangHua-Bin Li

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Software Mentioned

SPSS
Online Analytical Processing ( OLAP )
Excel

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