食品科学 ›› 2011, Vol. 32 ›› Issue (3 ): 64-67.doi: 10.7506/spkx1002-6630-201103016

• 基础研究 • 上一篇    下一篇

玉米皮多糖的组成及结构

张艳荣,刘相阳,于君,王大为*   

  1. 吉林农业大学食品科学与工程学院,吉林长春 130118
  • 收稿日期:2010-09-21 修回日期:2011-01-10 出版日期:2011-02-15 发布日期:2011-01-13
  • 通讯作者: 王大为 E-mail:xcpyfzx@163.com
  • 基金资助:

    国家“863”计划项目(2007AA10Z336)

Monosaccharide Component and Structure of Polysaccharides from Corn Spermoderm

ZHANG Yan-rong,LIU Xiang-yang,YU Jun,WANG Da-wei   

  1. College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
  • Received:2010-09-21 Revised:2011-01-10 Online:2011-02-15 Published:2011-01-13
  • Contact: WANG Da-wei E-mail:xcpyfzx@163.com

摘要: 采用紫外光谱、纸层析及比色等分析方法对分离纯化制得的玉米皮多糖A-1(CSPA-1)、A-2(CSPA-2)、B(CSPB)的总糖含量、单糖组成及基本结构进行初步研究。结果表明:CSPA-1、CSPA-2 和CSPB 皆为白色粉末,其中CSPB 微溶于水,其他易溶于水,不溶于高浓度的有机溶剂,不含蛋白质和淀粉,均含有糖醛酸。CSPA-1总糖含量为99.3%,糖醛酸含量为16.6%,糖基组成为葡萄糖、木糖及阿拉伯糖,可能还含有微量鼠李糖;CSPA-2 总糖含量为93.4%,糖醛酸含量为21.7%,糖基组成为葡萄糖、木糖、阿拉伯糖及鼠李糖;CSPB 总糖含量为83.3%,糖醛酸含量为6.82%,糖基组成为葡萄糖、木糖及阿拉伯糖。高碘酸氧化分析表明:CSPA-1 中1 → 2 糖苷键或1 → 4 糖苷键残基比例为25%,1 → 6 糖苷键残基比例为3%;CSPA-2 中1 → 2 糖苷键或1 → 4 糖苷键残基比例为25.7%,1 → 6 糖苷键残基比例为3%;CSPB 中1 → 2 糖苷键或1 → 4 糖苷键残基比例为34.1%,1 → 6 糖苷键残基比例为1%。

关键词: 玉米皮, 多糖, 单糖, 结构

Abstract: The total polysaccharide content, monosaccharide component and structure of three factions of polysaccharides from corn spermoderm, CSPA-1, CSPA-2 and CSPB, were measured through the ultraviolet-visible spectrogram, paper chromatography and polarimetric analysis testing in this preliminary study. CSPA-1, CSPA-2 and CSPB all were white powder, and CSPB was only slightly soluble in water, while CSPA-1and CSPA-2 completely soluble. They all were insoluble in high concentrations of organic solvent and did not contain any protein or starch but glucuronic acid. Total polysaccharide content of CSPA-1 was 99.3%, and glucuronic acid content 16.6%. The monosaccharide unit of CSPA-1 was identified as glucose, xylose and arabinose, and possibly rhamnos. Total polysaccharide content of CSPA-2 was 93.4%, and glucuronic acid was 21.7%. The monosaccharide unit of CSPA-2 was identified as glucose, xylose, arabinose and rhamnose. Total polysaccharide content of CSPB was 83.3%, with glucuronic acid being 6.82%. The monosaccharide unit of CSPB was identified as glucose, xylose, and arabinose. Periodate oxidation analysis showed that CSPA-1 had 1 → 2 linked or 1 → 4 linked (25%) and 1 → 6 linked (3%); CSPA-2 was 1 → 2 linked or 1→4 linked (25.7%) and 1→6 linked (3%); CSPB was 1→2 linked or 1→4 linked (34.1%) and 1→6 linked (1%).

Key words: corn spermoderm, polysaccharide, monosaccharide, structure

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