Antioxidant Activity of Red Betel Leaves Extract (Piper crocatum Ruiz & Pav.) By Difference Concentration of Solvents.

摘要

ABSTRACT Analysis of antioxidant activity (IC50), total phenol, total flavonoids and compounds performed on dry powder extracts of red betel leaves (Piper crocatum Ruiz & Pav.). Extraction using maceration method by ethanol concentration of 50 %, 70 % and 90 %. Extract with the highest antioxidant activity, analyzed by GCMS. The results showed levels of total flavonoid extract of ethanol (50 %, 70 % and 90 %), respectively for 159.32 .