花生壳水溶性膳食纤维不同提取工艺及其抗氧化活性研究  

Extraction and Antioxidant Activity Evaluation of Water Soluble Dietary Fiber from Peanut Hull

作　　者：于丽娜[1] 杨庆利[1] 毕洁[1] 张初署[1] 朱凤[1] 禹山林[1] 杜方岭 

机构地区：[1]山东省花生研究所,山东青岛266100 [2]山东省农副产品加工研究所,山东济南250100

出　　处：《食品科学》2009年第22期27-32,共6页Food Science

基　　金：国家"863"计划项目(2007AA10Z189;2006AA10A114);"十一五"国家科技支撑计划项目(2008BAD97B04);现代农业产业技术体系专项资金资助项目(nycytx-19);农业部农业公益性行业科研专项项目(nyhyzx07-014)

摘　　要：以花生壳为原料,经粉碎过筛后,采用一次酸提、二次酸提、三次酸提、微波提取和超声波提取等方法提取其中的功能性成分之一——水溶性膳食纤维(SDF),测定每种方法的提取率和所得到的SDF中的非淀粉性多糖(NSP)的含量,并计算它们的综合评分。结果表明:在这五种提取方法中,三次酸提的提取率最大,微波提取的SDF中NSP的百分含量最大,综合评分是三次酸提最大。同时,还研究了SDF的铁还原力、钼还原力、清除DPPH自由基、超氧阴离子自由基和羟自由基等五种抗氧化活性。Water soluble dietary fiber（SDF） is one of the main functional components in peanut hull.In order to obtain this component,one-stage,two-stage and three-stage extraction using citric acid alone,microwave-assisted extraction and ultrasonic extraction were adopted and their effectiveness was comprehensively assessed in terms of two indicators,including SDF extraction yield and non-starch polysaccharide（NSP） content in SDF.Results showed that among these extractions,three-stage extraction presented the highest SDF extraction yield and the largest weighed score of the above indicators,and obtained using microwave-assisted extraction exhibited the highest NSP content in SDF.In addition,SDF was found to have significant radical scavenging capacity against hydroxyl,superoxide anion and DPPH free radicals and excellent ferric-reducing power and molyb-denum-reducing power.

关 键 词：花生壳 水溶性膳食纤维 提取工艺 抗氧化活性 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]