低分子量壳聚糖与茶多酚复配物的抗氧化性  

Antioxidant Activity of Low Molecular-weight Chitosan and Tea Polyphenols Compounds

作　　者：邹文中[1] 邹艾一 潘志民 张小芳[1] 梁小明[1] 

机构地区：[1]北海职业学院海洋食品研发中心,北海536000 [2]暨南大学化学系,广州510632 [3]鹤山市东古调味食品有限公司,鹤山529738

出　　处：《食品工业》2014年第6期192-195,共4页The Food Industry

基　　金：2009年度广西教育厅科研项目(项目编号200911MS371);广西自然科学基金项目(桂科自0991268);2012年度广西高校优秀人才资助计划项目(序号108)

摘　　要：将低分子量壳聚糖与茶多酚复配，制成壳聚糖与茶多酚复配物，并采用紫外可见光分光光度计研究了该复配物对超氧阴离子自由基、羟自由基、过氧化氢和1，1-二苯基-2-苦肼基自由基（DPPH）的清除能力。结果表明，壳聚糖与茶多酚复配物的超氧阴离子自由基、羟自由基、过氧化氢和DPPH的清除能力均高于单独壳聚糖，并且随着复配物中茶多酚含量增加清除率增大，表明复配物的抗氧化性高于壳聚糖；当V（壳聚糖）：V（茶多酚）为6：4～2：8时，复配物的羟自由基清除率高于单独壳聚糖或茶多酚，在V（壳聚糖）：V（茶多酚）为2：8时复配物DPPH清除率比茶多酚提高0．70％、比壳聚糖提高6．67％，表明壳聚糖与荼多酚之间存在协同增效作用。Low molecular-weight chitosan and tea polyphenols compounds were prepared, and antioxidant activity of thecompounds was studied by the scavenging of superoxide anion （O2·）, hydroxyl radical （·OH）, hydrogen peroxide （H2O2） and1,1-diphenyl-2-picylhydrazyl radical （DPPH） with UV-visible absorption spectrometry. The results showed that the activityof scavenging O2-·, ·OH, H2O2, and DPPH of chitosan and tea polyphenols compounds was higher than that of chitosan,indicating higher antioxidant activity. When the ratio of chitosan and tea polyphenols was between 6 4 and 2 ： 8, theactivity of scavenging .OH of chitosan and tea polyphenols compounds was higher than that of chitosan or tea polyphenols,and at the ratio of 2 ： 8, the activity of scavenging DPPH of the compounds increased by 0.70%, 6.67%, higher than chitosanand tea polyphenols, indicating the synergistic effect between chitosan and tea polyphenols.

关 键 词：壳聚糖 茶多酚 抗氧化性 复配 

分 类 号：O636.1[理学—高分子化学]