Author(s)

Jing Zhang, Zemei Guo, Sha Yi, Zhangcheng Ren, and Xin Zhao

Corresponding Author

Xin Zhao

Abstract

Insect tea is a traditional beverage in China. In this study, the Insect tea polyphenols were extracted and the in vitro antioxidant effects of Insect tea polyphenols were preliminarily studied. It was found that the content of polyphenols in Insect tea polyphenols extracted by ion precipitation reached 71.2%. In further experiments, the DPPH, ABTS and hydroxyl radical scavenging capacities of Insect tea polyphenols were increased with the higher concentrations of Insect tea polyphenols. When the concentration reached 1 mg/mL, the DPPH, ABTS and hydroxyl radical scavenging capacities of Insect tea polyphenols reached 84.9%, 62.1% and 47.8%, respectively. It can be seen that the Insect tea polyphenols have good antioxidant effect in vitro and they are a kind of bioactive substances worth exploiting and utilizing.

Keywords

Insect tea, Polyphenol, Antioxidant, DPPH, ABTS