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《JOURNAL OF BEIJING AGRICULTURAL COLLEGE》 1997-03
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The Study of Extracting Tea Polyphenols

Qi Jinghua(Beijing Agricultural College, Beijing 102206)  
Tea Polyphenols were extracted from green tea using ethyl acerate, ethanol, acetone and methanol, The extractions were analysed especially using ethanol. Fraction A (using ethyl acerate) and B (using ethanol) contained about 64 %, 53% tea polyphenols and have strong antioxidant effect. Using ethanol for extracting, concentration was 70% (ethnaol) and temperature was 45℃and time was 1 h
【CateGory Index】: TS272
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