上海科技大学知识管理系统

Tea is the most consumed beverage in the world. Since ancient times, green tea has been considered by the traditional Chinese medicine as a healthful beverage. However, there are many by-products formed during producing of the tea, such as tea stems and tea hairs, which were thrown away as waste. To reuse these by-products, we studied the chemical, components of tea stems and tea hairs. In this work, we obtained different polar extractions from the tea stems and tea hairs and then their antioxidant activity was studied accordingly. The result showed that ethyl acetate extractions of tea hairs(B and D) and tea stems (G and I) exhibited the highest antioxidant effect among all extractions(A-]) and the antioxidant ability is almost the same with the scavenging rate between 80-85%, which provide the guidance for the below work.