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All Journal Pharmaciana: Jurnal Kefarmasian
Erlinda Widyasari, Erlinda
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Medicine & Pharmacology

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AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL DAUN KELENGKENG (Euphoria longan (L) Steud.) DENGAN METODE PENANGKAPAN RADIKAL 2,2’-DIFENIL-1-PIKRILHIDRAZIL Widyasari, Erlinda; Salamah, Nina
Pharmaciana Vol 5, No 1 (2015): Pharmaciana
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.021 KB) | DOI: 10.12928/pharmaciana.v5i1.2283

Abstract

The degenerative diseases is caused by endogenous antioxidant cannot neutraliced from increased concentration of free radicals, therefore it is necessary to consume antioxidant from the outside ofbody for neutralizing and destroying free radicals. The aim of this research is to evaluate the antioxidant activity of methanolic extract of longan leaves. The experiment of antioxidant activity from extract longan leaves uses the scavenging assay using 2,2’-diphenyl-1-pycrylhydrazyl (DPPH) method and quersetin as positive control. The analytical result is processed using linear regression methode in order to get ES50 value. The results of research showed that theincreasing concentration of  methanolic extract, and quercetin causes the higher percentage of DPPH radical scavenging. The ES50 values of methanolic extract and quercetin obtained are 40.32 µg/ml and 2.48 µg/ml respectively.
Co-Authors Aldri Frinaldi