黄原胶降解及其抗氧化性能研究  

Degradation and Antioxidant Activity of Xanthan Gum

作　　者：孙涛[1] 熊小英[1] 魏颖隽[1] 谢晶[1] 薛斌[1] 

机构地区：[1]上海海洋大学食品学院,上海201306

出　　处：《天然产物研究与开发》2012年第1期102-104,113,共4页Natural Product Research and Development

基　　金：上海市生物医药和农业科技领域重点科技项目(08391911500);2009年上海市优秀学科带头人计划(09XD1402000);上海市教委重点学科建设项目(J50704)

摘　　要：酸性条件下对黄原胶进行氧化降解,透析得到两种黄原胶寡糖,对产物进行FT-IR表征,GPC法测定两种寡糖的分子量分别为7500、10100。考察两种产物对超氧阴离子自由基O2-.和过氧化氢的清除活性以及还原能力,结果表明10100-XG较7500-XG具有更强的抗氧化性能。这可能与黄原胶寡糖活性羟基数目有关。Two xanthan oligosaccharides were prepared by oxidative degradation in acidic condition.The products were characterized by FT-IR,and the molecular weight of the products determined by GPC method was 7500 and 10100,respectively.The antioxidant activities of the xanthan oligosaccharides were investigated by the scavening of superoxide anion,hydrogen peroxide and reducing power.The result indicated that 10100-XG exhibited higher antioxidant activity than 7500-XG.It may be related to the the content of hydroxyl groups.

关 键 词：黄原胶 氧化降解 抗氧化性能 

分 类 号：R285[医药卫生—中药学] Q539[医药卫生—中医学]