Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2015 Vol: 7 Issue: 8

Antioxidant activities of extract and fractions from Clerodendrum inerme

Abstract

The antioxidant activities of ethanolic crude extract (ECE) and its five different solvent sub-fractions (namely, petroleum ether fraction (PEF), dichloromethane fraction (DMF) ethyl acetate fraction (EAF), n-butyl alcohol fraction (BAF) and the rest fraction (RF) from Clerodendrum inerme were investigated using several in vitro antioxidant assays. ECE and five sub-fractions possessed different antioxidant and radical-scavenging activities in different assays. BAF showed the most potent radical-scavenging activity on DPPH radicals with EC50 value of 0.28 mg/ml. EAF exhibited the highest ABTS radicals with EC50 value of 0.46 mg/mL. The total phenolics contents (TPC) and total flavonoid contents (TFC) were also determined. RF had the highest TPC (10.73 mg GAE/g DW), and BAF had the highest TF contents C (3.81 mg RT/g DW). Our work offers theoretical basis for C. inerme as a potential source of natural antioxidants.