不同茶叶水提取物抗氧化活性研究  

Study on Antioxidant Activity of Different Tea Water Extracts

作　　者：王玉婷 吕佳佳 杨新河[1] 肖畅 Wang Yuting;Lv Jiajia;Yang Xinhe;Xiao Chang(College of Life Science and Technology,Hubei Engineering University,Xiaogan,Hubei 432000,China;College of Life Science,Hubei University,Wuhan,Hubei 430062,China)

机构地区：[1]湖北工程学院生命科学技术学院,湖北孝感432000 [2]湖北大学生命科学学院,湖北武汉430062

出　　处：《湖北工程学院学报》2020年第6期15-18,共4页Journal of Hubei Engineering University

摘　　要：采用ABTS、DPPH、FRAP和总还原力等4种体系评价9种茶叶水提取物的抗氧化活性,结果表明,不同茶叶水提取物均具有抗氧化能力,但抗氧化活性差异明显,在4种评价体系中抗氧化能力最强的均为五峰毛尖茶。相关性分析结果表明,总多酚和黄酮含量及茶汤L值的高低与抗氧化活性大小呈极显著正相关,水溶性糖含量及茶汤a、b和△E值的高低与抗氧化活性大小呈极显著负相关。The antioxidant activities of nine different tea water extracts were evaluated by ABTS assay,DPPH assay,FRAP assay and total reducing power assay.The results showed that there were significant differences between the antioxidant activities of tea water extracts and Wufeng Maojian tea had the highest antioxidant capacity in all the four evalution system.The correlation analysis showed that the content of total polyphenols,flavonoids and the L value of tea soup were significantly positively correlated with the antioxidant activity,however,the content of soluble sugars,the values of a,b and△E were negatively correlated with antioxidant activity.

关 键 词：茶叶 成分 色差 抗氧化活性 相关性分析 

分 类 号：S571.1[农业科学—茶叶生产加工]