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《Journal of Fujian Agricultural and Forestry University(Natural Science Edition)》 2005-01
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Determining method of DPPH free radical scavenging activity of bamboo leaf extractives

ZHENG De-yong~1, AN Xin-nan~2 (1.College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;2.College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangshu 210037, China)  
A spectrophotometric method for determining 1,1-diphenyl-2-picryl-hydrazyl(DPPH) free radical scavenging activity of natural antioxidants was put forward. The evaluating criterion of DPPH free radical scavenging activity was regarded as “IC_(50)” by determining the scavenging rate curves of ascorbic acid, quercetin, thiocarbamide and rutin. The DPPH free radical scavenging activity of extractives from 21 species of cluster-bamboo′s leaf were determined by this method.
【Fund】: 福建省林业厅基金资助项目(闽林[2000]08).
【CateGory Index】: O625
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