台湾青枣多糖抗氧化活性的研究  

Antioxidant Activity of Polysaccharide fromIndian jujube (Ziziphus mauritiana Lamk) Fruit

作　　者：陈莲[1,2] 林河通[1] 郭巧玲[2] 陈艺晖[1] 林艺芬[1] 

机构地区：[1]福建农林大学食品科学学院,福州350002 [2]漳州职业技术学院食品与生物工程系,福建漳州363000

出　　处：《热带作物学报》2010年第5期863-866,共4页Chinese Journal of Tropical Crops

基　　金：国家科技支撑计划专项(2007BAD07B06);福建省高等学校新世纪优秀人才支持计划(闽教科[2007]20号)资助

摘　　要：以热水浸提法(料水比1∶4,100℃下提取4h)从台湾青枣(Ziziphus mauritiana Lamk.)果实中提取的多糖为材料,通过清除超氧阴离子自由基(O.-2)、清除羟基自由基(.OH)能力和还原能力等来评价台湾青枣多糖的体外抗氧化能力。结果表明:台湾青枣多糖清除.OH能力和还原能力均随多糖浓度的增加而上升;10mg/mL的多糖对.OH的清除率高达98%,0.5mg/mL的多糖对O.-2的清除率为29.1%,6mg/mL多糖的还原能力在700nm下的吸光值为0.82。说明台湾青枣多糖有较强的抗氧化能力,对体外自由基有较好的清除作用。Indian jujube （Ziziphus mauritiana Lamk.） polysaccharide, extracted with water at 100 ℃ for 4 h with fruit to water ratio of 1 ：4, was used as experimental material for antioxidant activity study.The antioxidant activity of polysaccharide in vitro was evaluated by the methods of scavenging hydroxyl radical （.OH）, scavenging superoxide anion radical（O2-.） or reducing power.The results showed that the scavenging capacity of .OH and reducing power increased with the increasing concentration of Indian jujube polysaccharide.10 mg/mL concentration of Indian jujube polysaccharide had as high as 98% scavenging ratio of .OH, while there was 29.1% scavenging ratio of O2-.when the concentration of Indian jujube polysaccharide was 0.5 mg/mL, and absorbance at 700 nm of reducing power was 0.82 when the concentration of Indian jujube polysaccharide was 6 mg/mL.From the results it could be concluded that polysaccharide from Indian jujube fruit had strong antioxidant capacity to have free radical scavenged in vitro.

关 键 词：台湾青枣 果实 多糖 抗氧化活性 

分 类 号：TS255.4[轻工技术与工程—农产品加工及贮藏工程] S379[轻工技术与工程—食品科学与工程]