Identification and Evaluation of Antioxidant Activities of Bamboo Extracts

编号 zgly0000341404

文献类型 期刊论文

文献题名 Identification and Evaluation of Antioxidant Activities of Bamboo Extracts

学科分类 220.99;林学其他学科

作者 MuJun  UeharaTohru  LiJianzhang  FurunoTakeshi 

作者单位 FacultyofScienceandEngineering  ShimaneUniversity  Matsue690-8504  Japan  CollegeofMaterialSciencesandTechnology  BeijingForestryUniversity  Beijing100083  P.R.China 

母体文献 中国林学: 英文版 

年卷期 2004,6(2)

页码 1-5

年份 2004 

分类号 S795.01  Q946 

关键词 抗氧化剂  竹  浸出液  活性  自由基  DPPH 

文摘内容 The antioxidant activity of solvent extracts from two main bamboo species, moso bamboo (Phyllostachys pubescens) and madake bamboo (P bambusoides) in Japan, was first evaluated by scavenging free radical of 1,1-diphenyl-2-picrylhydrazyl (DPPH), the inhibition activity for peroxidation of linoleic acid, and the reduction power. The methanol-extracts of moso bamboo culms and madake bamboo leaves presented stronger antioxidant activity compared with DPPH scavenging activity. Methanol-extract of moso bamboo culms was further fractionated by different solvents and n-butanol soluble fraction exhibited the most significant activity in the DPPH scavenging assay. The fractionation of n-butanol soluble extract was isolated by silica gel column with gradient mixture solvent of chloroform and methanol. The isolated fractions were directed by the antioxidant activity measured by scavenging the stable DPPH free radical. It was observed that most of the eluted fractions showed the antioxidative activity. Fractions acquired from elution with the mixture solvent of chloroform and methanol (10:1-5:1) showed stronger antioxidant activity than the other fractions。