油茶多糖和多酚的体外抗氧化活性研究  

Study on Antioxidant Activity of Polysaccharides and Polyphenols from the Camellia oleifera in vitro

作　　者：高石花[1] 叶高杰[1] 覃江克[1] 黎国庆[1] 陆海南[1] 

机构地区：[1]广西师范大学化学化工学院药用资源化学与药物分子工程重点教育部实验室,桂林541004

出　　处：《食品工业》2013年第11期163-166,共4页The Food Industry

基　　金：广西科学研究与技术开发计划项目(桂科攻1099056)

摘　　要：研究油茶多糖和多酚的体外抗氧化活性。以VC为对照品,测定油茶多糖和多酚对DPPH、羟基自由基、超氧阴离子自由基和ABTS自由基的清除能力。结果表明,油茶多糖对DPPH自由基和超氧阴离子自由基具有较强的清除作用,其IC50分别约为0.28 g/L和0.29 g/L;而对羟基自由基和ABTS自由基的清除能力相对较弱。油茶多酚清除DPPH自由基和超氧阴离子自由基的IC50均比VC小;对羟基自由基和ABTS自由基有较强的清除能力,其IC50均为0.45 g/L。The aim of this study is to investigate the antioxidant effects in vitro of polysaccharides and polyphenols from the Camellia oleifera. The scavenging capacities of polysaccharides and polyphenols from the Camellia oleifera on DPPH, .OH, 02- and ABTS＋. were assayed in contrast with VC. The experimental results indicated that polysaccharides has strong effect of scavenging on DPPH and O2- than .OH and ABTS＋. The IC50 ofpolysaccharides from Camellia oleifera on DPPH were 0.28 g/L and 02- were 0.29 g/L, respectively. Compared with VC, polyphenols has stronger effect of scavenging on DPPH and O2-. and it has strong effect of scavenging on -OH and ABTS＋- （both of IC50 are 0.45 g/L）.

关 键 词：油茶 多糖 多酚 抗氧化活性 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程] R285.1[轻工技术与工程—食品科学与工程]