The antioxidant activity of different polar parts of Paeonia Lactiflora are compared,and the correlation between antioxidant activity and total terpene content is explored.Paeonia Lactiflora extracts are divided into six polar parts such as petroleum ether,ethyl acetate,n-butanol,95％ethanol,65％ethanol and water,and their antioxidant activity is evaluated through total reduction power,and scavenging capacity for DPPH and ABTS free radicals.Total terpene content of various parts is determined by means of color reaction.SPSS 19.0 software is employed to analyze the correlation between antioxidant activity and total terpene content.Experiment results show that the antioxidant activity of 95％ethanol extract part of Paeonia Lactiflora is the strongest,comes next with 65％ethanol extract,n-butanol extract,ethyl acetate extract,water extract and petroleum ether extract.In addition,the content of total terpene is positively correlated with antioxidant activity,and is significantly correlated with the ability to scavenge ABTS and DPPH free radicals.
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