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《Journal of Anhui Agricultural Sciences》 2009-35
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Study on the Antioxidant Activity of Extracts from Malus hupehensis

WANG Bing-fang et al (College of Light Industry and Food Sciences,South China University of Technology,Guangzhou,Guangdong 510641)  
[Objective] The purpose was to study the elimination effect of the antioxidative matters from Malus hupehensis on free radicals.[Method] The eliminating capabilities on organic free radicals of the extracts extracted from M.hupehensis with 80% ethanol were determined by DPPH and FRAP methods and they were compared with the eliminating capability of green tea.[Result] When the VC concn.were 0.002 1,0.002 6,0.003 5、0.005 2、0.010 4 and 0.020 8 mg/ml,its elimination rates on DPPH were(14.90±0.13)%,(19.70±0.35)%,(21.80±0.17)%,(30.70±0.44)%,(62.80±0.17)% and(96.70±0.28)% resp.and the determination results showed that the elimination capability of VC on free radicals showed obvious dose-effect relationship with VC concn.When the concn.of extracts from M.hupehensis were 20.0,2.5,1.0 and 0.5 mg/ml,its elimination rates on DPPH were(90.15±0.14)%,(87.59±0.56)%,(77.89±0.43)% and(61.67±0.35)% resp.The antioxidant activity of the ethanol extracts from M.hupehensis was higher than that of green tea.When the concn.were same,the FRAP value of the ethanol extracts from M.hupehensis was higher that that of its water extracts,showing that the antioxidative matters in the ethanol extracts from M.hupehensis were more than that in its water extracts.[Conclusion] This experiment provided reference for thoroughly studying the bioactivity of extracts from M.hupehensis.
【CateGory Index】: S792.99
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