ORAC法评价16种茶叶的抗氧化能力

Study on antioxidant activities of 16 kinds of tea

中文关键词:  ORAC值  绿茶  乌龙茶  红茶  黑茶  抗氧化活性

英文关键词:oxygen radical absorbance capacity  green tea  oolong tea  black tea  antioxidant activity

中文摘要:

      目的 评价4类不同发酵类型16种茶叶样品总抗氧化能力。方法 采用氧自由基吸收能力（oxygen radical absorbance capacity, ORAC）法。结果 闽红茶样品ORAC值最高，为1379.1 μmol TE/g，其次为乌龙茶水仙，其ORAC值为1270.7 μmol TE/g，第三位绿茶品种的古丈毛尖，其ORAC值为1247.1 μmol TE/g。结果表明研究的。结论 4类茶叶样品均具有一定的抗氧化活性，其中绿茶样品整体均具有较高的ORAC值，但4类茶叶的ORAC值无统计学差异（P>0.05），尚不能认为不同种类茶叶的ORAC值不同。

英文摘要:

      Objective To study the antioxidant activities of 16 kinds of tea Methods Oxygen radical absorbance capacity (ORAC). Results The average ORAC value were 1379.1 μmol TE/g of Fujian tea, 1270.7 μmol TE/g of Oolong tea, 1247.1 μmol TE/g of guzhang maojian tea. Conclusions The results suggested that all the 16 kinds of tea under different concentrations had free radical scavenging capacity, and green tea has a higher ORAC value. There is no statistical difference in ORAC values of four kinds of tea(P>0.05)，and It is not sure that the ORAC value of different kinds of tea is different.