龙眼果皮及果核中植物多酚含量的测定及抗氧化能力研究  

Antioxidant capacity and contents of polyphenols in pericarps and stones of Dimocarpus longan

作　　者：刘春丽[1,2] 颜小捷[2] 杨子明[2] 陈月圆[2] 卢凤来[2] 关小丽[2,3] 黄永林[2] 李典鹏[2] 

机构地区：[1]广西师范大学,桂林541004 [2]广西壮族自治区中国科学院广西植物研究所,桂林541006 [3]广西中医药大学,南宁530001

出　　处：《食品科技》2014年第11期203-206,211,共5页Food Science and Technology

基　　金：广西科技合作与交流计划项目(桂科合:1298014-10);广西自然科学基金项目(2011GXNSFD018038);广西植物研究所基本业务费项目(桂植业:13002);广西植物功能物质研究与利用重点实验室开放基金项目(ZRJJ2013-7)

摘　　要：采用Folin-酚法对龙眼鲜果及干果的果皮、果核中植物多酚的含量进行测定;通过DPPH法、ABTS自由基清除法、Fe2+螯合法和Fe3+还原法等4种方法评价其提取物的抗氧化能力,分析其总酚类物质的含量和抗氧化能力的关系。结果表明:果皮总酚的含量鲜果(4.73%)远远大于干果(2.11%),果核中鲜果与干果的含量差别不大,分别为4.61%和3.41%。4种提取物均表现出良好的抗氧化能力,其中鲜果果核最强。为全面掌握龙眼果皮、果核中的多酚含量变化及抗氧化能力提供了科学依据。Using the Folin-phenol method contents of polyphenols in pericarps and stones of Dimocarpus longan, its extract antioxidant capacities were evaluated by four antioxidant methods, including DPPH· scavenging, ABTS· radical scavenging, Fe^2＋ chelating, and Fe^3＋ reducing assays, and the relationship between the total polyphenols content and antioxidant capacity have been analyzed. The results showed that the polyphenols content of fresh pericarps（4.73%） was greater than the dried pericarps（2.11%）, the contents of fresh stone and dried stone was almost the same, 4.61% and 3.41% respectively. All extracts exhibited good antioxidant capacity, the fresh stone was strongest. To provide a scientific basis for the contents change of polyphenols in pericarps and stones of Dimocarpus longan and its antioxidant capacity.

关 键 词：龙眼 果皮 果核 总多酚 含量测定 抗氧化能力 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]