8种发酵茶茶多酚含量及抗氧化活性分析  

Polyphenol content and antioxidant activity of 8 fermented teas

作　　者：翟淑红 黄锦悦 周婷钰 石慧 陈涛[2] ZHAI Shuhong;HUANG Jinyue;ZHOU Tingyu;SHI Hui;CHEN Tao(College of Food and Biotechnology,Wuhan Institute of Design and Sciences,Wuhan 430205,China;College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]武汉设计工程学院食品与生物科技学院,湖北武汉430205 [2]华中农业大学食品科学技术学院,湖北武汉430070

出　　处：《中国酿造》2022年第8期179-183,共5页China Brewing

基　　金：百校联百县-高校服务乡村振兴科技支撑行动计划(BXLBX1060);湖北省教育厅优秀青年科技创新团队项目(T201534)。

摘　　要：发酵茶是茶叶中的一大类,品种繁多,各具特色,深受消费者的喜爱。该实验选取8种发酵茶,对茶浸提液的茶多酚含量和体外抗氧化活性进行了测定。结果表明,滇红茶样品2的茶多酚含量较高,为10%,青砖茶样品2较低,为3.4%;普洱茶样品1的1,1-二苯基-2-三硝基苯肼(DPPH)自由基清除率较高,为80.5%,茯砖茶样品1较低,为64.2%;普洱茶样品2亚硝酸盐清除率较高,为71.0%,青砖茶样品1较低,为31.3%;滇红茶样品1亚硝胺合成阻断率较高,为95.0%,青砖茶样品2较低,为69.9%。表明8种发酵茶的抗氧化活性、亚硝酸盐清除能力及亚硝胺合成阻断能力与茶多酚含量有关但并不完全呈正相关。Fermented tea is a large category of tea,which has various varieties with their own characteristics,and deeply loved by consumers.8 different kinds of fermented teas were selected in this experiment,and the contents of tea polyphenols and antioxidant activity of tea extract in vitro were determined.The results showed that the content of tea polyphenols of Yunnan black tea sample 2 was higher,which was 10%,and that of Qingzhuan tea sample 2 was lower,which was 3.4%.The 1,1-diphenyl-2-picrylhydrazyl(DPPH)radical scavenging rate of Pu'er tea sample 1 was higher,which was 80.5%,and that of Fuzhuan tea sample 1 was lower,which was 64.2%.The nitrite removal rate of Pu'er tea sample 2 was higher,which was 71.0%,and that of Qingzhuan sample 1 was lower,which was 31.3%.The blocking rate of nitrosamine synthesis of Yunnan black tea sample 1 was higher,which was 95.0%,and that of Qingzhuan tea sample 2 was lower,which was 69.9%.The results showed that the antioxidant activity,nitrite scavenging ability and nitrosamine synthesis blocking ability of the 8 fermented teas were related to the content of tea polyphenols,but not completely positive correlation.

关 键 词：发酵茶 茶多酚 抗氧化 DPPH自由基清除能力 亚硝酸盐清除能力 亚硝胺阻断能力 

分 类 号：TS272.5[农业科学—茶叶生产加工]