天然产物研究与开发 ›› 2011, Vol. 23 ›› Issue (3): 530-533.

• 开发研究 • 上一篇    下一篇

κ-卡拉胶邻苯二甲酰基化衍生物的抗氧化活性研究

孙 涛*,陶慧娜,周冬香,毛 芳,谢 晶   

  1. 上海海洋大学食品学院,上海 201306
  • 收稿日期:2009-10-30 出版日期:2011-06-25 发布日期:2011-08-08
  • 通讯作者: taosun@shou.edu.cn
  • 基金资助:

    上海市教育委员会科研项目 (07zz134),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)

Antioxidant Activity of Phthaloyl Derivative of κ-Carrageenan Oligosaccharides

SUN Tao*, TAO Hui-na, ZHOU Dong-xiang, MAO Fang, XIE Jing   

  1. College of Food Science, Shanghai Ocean University, Shanghai 201306, China
  • Received:2009-10-30 Online:2011-06-25 Published:2011-08-08

摘要:

κ-卡拉胶进行酸降解得到三种卡拉胶低聚糖,并进一步与苯二甲酰基合成制得三种分子量分别为1450、2520和3430的κ-卡拉胶邻苯二甲酰衍生物(LA、LB和LC)。对产物进行IR表征并对其取代度(DS)进行测定,并检测了产物对羟基自由基•OH、DPPH自由基和过氧化氢的清除活性以及还原能力。结果表明,上述三种κ-卡拉胶邻苯二甲酰衍生物的抗氧化能力强弱顺序依次为:LC >LA >LB,这可能与衍生物的羟基含量、取代基团的性质以及取代度等因素有关。

关键词: κ-卡拉胶, 酸降解, 邻苯二甲酰基, 抗氧化活性

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.

Key words: κ-carrageenan, acid degradation, phthaloyl, antioxidant activity

中图分类号: 

R285 Q539 TS202.3