食品科学 ›› 2009, Vol. 30 ›› Issue (19): 109-113.doi: 10.7506/spkx1002-6630-200919023

• 基础研究 • 上一篇    下一篇

白灵菇多糖的分离纯化及清除自由基研究

马淑凤1,陈利梅2,徐化能1,刘长江3   

  1. 1.江南大学食品学院 2.聊城大学农学院食品科学与工程系 3.沈阳农业大学食品学院
  • 收稿日期:2009-06-18 修回日期:2009-08-11 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 马淑凤 E-mail:msf971516@126.com
  • 基金资助:

    辽宁省教育厅科学研究计划资助项目(05L391);江南大学青年基金项目(2008LNQ021)

Purification and Free Radical Scavenging of Fruit-body Polysaccharide from Pleurotus nebrodensis

MA Shu-feng1,CHEN Li-mei2,XU Hua-neng1,LIU Chang-jiang3   

  1. 1. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
    2. Department of Food Science, College of Agricucture, Liaocheng University, Liaocheng 252059, China;
    3. College of Food, Shenyang Agricultural University, Shenyang 110161, China
  • Received:2009-06-18 Revised:2009-08-11 Online:2009-10-01 Published:2010-12-29
  • Contact: MA Shu-feng1 E-mail:msf971516@126.com

摘要:

对白灵菇子实体粗多糖进行分离纯化与纯度鉴定,并应用化学发光法对多糖清除羟自由基(·OH)和超氧阴离子自由基(O2·)的能力进行研究。结果表明,利用Savag 法脱法蛋白质、透析法脱法小分子物质以及醇沉后得到的粗提物,经DEAE-Cellulose52 和Sephadex G-200 柱层析后得到纯品;采用UV、琼脂糖凝胶电泳以及SephadexG-200 方法鉴定这种物质PNFP Ⅱ-a 是一种纯多糖;而且这种子实体纯多糖具有较强的抗氧化活性,能显著消除O2·和·O H 。

关键词: 白灵菇, 子实体多糖, 分离纯化, PNFP Ⅱ-a, 清除自由基

Abstract:

A water-soluble polysaccharide was isolated and purified from fruit-body of Pleurotus nebrodensis through sequential ethanol precipitation by Savag method, DEAE-cellulose 52 and Sephadex G-200 column chromatography to remove proteins and small molecules. This polysaccharide was identified to be PNFP-IIa through UV, agarose gel electrophoresis and Sephadex G-200 column chromatography. Moreover, PNFPII-a revealed high scavenging capability against hydroxyl and superoxide anion free radicals through chemiluminescent assay.

Key words: Pleurotus nebrodensis, fruit-body polysaccharide, purification, PNFP II-a, free radical scavenging

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