GALLIC ACID FROM PODS OF JIRINGA (ARCHIDENDRON JIRINGA JACK I.C. NIELSEN) AND ITS ANTIOXIDANT

摘要

Objective: This study was aimed to isolate and investigate antioxidant activity of gallic acid in pods of jiringa ( Archidendron jiringa Jack I.C. Nielsen). Methods: Pods of jiringa were extracted by maceration. Phenolic compounds were tested using FeCl3. Identification of pure compound was obtained from spectra data from nuclear magnetic resonance of proton H (1H NMR), NMR of carbon (13C NMR), infra-red, and mass spectrometry. Antioxidant activity was investigated using 1,1-diphenyl-2-picrylhydrazyl method. Results: The IC50 of gallic acid from jiringa’s pods ( A. jiringa Jack I.C. Nielsen) was 3.65 μg/ml. This value showed that gallic acid from jiringa’s pods ( A. jiringa Jack I.C. Nielsen) had high antioxidant activity. Conclusions : Gallic acid presents in pods of jiringa ( A. jiringa Jack I.C. Nielsen) and has high antioxidant activity.