2006•Xinan goufang yiyaoRequires access

Study on stability of gallic acid

WU Xue-chai

Abstract

Objective:To investigate the stability of gallic acid under different conditions.Methods:The stability of gallic acid in water with different pH values,anti-oxidant,strong light,strong oxidation and high temperature were examined,respectively by the classical homeothermia method.The contents of gallic acid were determined by RP-HPLC.Results:It was found that gallic acid was unstable under the conditions of basic,neutral and strong oxidizing,it was stable under the conditions of acid,strong light and high temperature and its stable could be protected by antioxidants.Conclusion:The stability of gallic acid is different under different conditions,which should be considered in preparation.

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Key concepts: Gallic acid, Oxidizing agent, Chemistry, Chromatography, Organic chemistry, Antioxidant