天然产物研究与开发2011，Vol.23Issue(3)：530-533,4.
κ-卡拉胶邻苯二甲酰基化衍生物的抗氧化活性研究
Antioxidant Activity of Phthaloyl Derivative ofκ-Carrageenan Oligosaccharides
摘要
Abstract
Three κ-carrageenan oligosaccharides were prepared by acidic degradation of κ-carrageenan. Their phthaloyl derivatives with different molecular weight (LA: 1450;LB: 2520;LC: 3430) were synthesized with phthalic anhydride.The products were characterized by FI-IR,and the degrees of acylation (DS) were determined. Their antioxidant activities were evaluated by the scavenging of hydroxyl radical, 1,1-diphenyl-2-picrylhrazyl radicals (DPPH) , hydrogen peroxide and reducing power. The results indicated that the orders of antioxidant activities were: LC ＞ LA ＞ LB. It may be related to the content of hydroxyl groups, the nature of substituting group and the substituting degrees.关键词
κ-卡拉胶/酸降解/邻苯二甲酰基/抗氧化活性Key words
κ-carrageenan/ acid degradation/ phthaloyl/ antioxidant activity分类
医药卫生引用本文复制引用
孙涛,陶慧娜,周冬香,毛芳,谢晶..κ-卡拉胶邻苯二甲酰基化衍生物的抗氧化活性研究[J].天然产物研究与开发,2011,23(3):530-533,4.基金项目
上海市教委重点学科建设项目(J50704),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). （J50704）
