食品科学 ›› 2010, Vol. 31 ›› Issue (11): 51-54.doi: 10.7506/spkx1002-6630-201011011

• 基础研究 • 上一篇    下一篇

菜籽多糖WPS-1的理化性质及结构研究

朱建飞1,陈 岗1,唐春红1,吴谋成2   

  1. 1.重庆工商大学环境与生物工程学院,绿色食品研究所 2.华中农业大学食品科学技术学院
  • 收稿日期:2009-12-03 出版日期:2010-06-01 发布日期:2010-12-29
  • 通讯作者: 朱建飞 E-mail:zhujf@sina.cn
  • 基金资助:

    “十五”国家重大科技专项(2001BA501A20)

Physico-chemical and Structural Characterization of Rapeseed Polysaccharide WPS-1

ZHU Jian-fei1 CHEN Gang1 TANG Chun-hong1 WU Mou-cheng2   

  1. 1. College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
    2. Ocean Food Nutrition Research Institute of Shandong Taixiang Group, Rongcheng 264309, China
  • Received:2009-12-03 Online:2010-06-01 Published:2010-12-29
  • Contact: ZHU Jian-fei E-mail:zhujf@sina.cn

摘要:

菜籽多糖WPS-1为白色絮状的非淀粉多糖,其中性糖、糖醛酸、蛋白质含量分别为83.2%、6.1%、3.4%,而WPS-1中蛋白质部分由13种氨基酸组成。经FT-IR、GC分析WPS-1的官能团特征和单糖组成,确定WPS-1单糖主要由阿拉伯糖(Ara)、半乳糖(Gal)、葡萄糖(Glc)组成,其物质的量分数分别为67.7%、17.8%、14.5%;通过甲基化分析得出WPS-1的主体部分是主要是由(1→5)键和(1→2)键连接的阿拉伯糖残基组成的多支链α-阿拉伯糖。13C NMR和1H NMR验证WPS-1中阿拉伯糖部分含有4种糖环。

关键词: 菜籽多糖WPS-1, 理化性质, 结构

Abstract:

WPS-1 was found to be a non-starch polysaccharide with white and flocculent appearance, in which the contents of neutral sugar, uronic acid and protein were 83.2 %, 6.1% and 3.4%, respectively. Protein in WPS-1 was composed of 13 different amino acids. The major monosaccharide compositions of WPS-1 as determined through FT-IR and GC analyses were Ara (67.7%), Gal (17.8%) and Glc (14.5%). The methylation analysis indicated that the major fragments of WPS-1 were (1→5) and (1→2) linked by Ara residues of α-arabinoses. Four kinds of substituted arabinosyl residues as verified according to the 13C NMR and 1H NMR spectra existed in arabinan fragments of WPS-1.

Key words: rapeseed polysaccharide WPS-1, physico-chemical properties, structure

中图分类号: