Comparative Analysis of Polysaccharides from Two Ecological Types of Leymus chinensis

文献类型: 外文期刊

第一作者: Bi Hong-tao

作者: Bi Hong-tao;Li Jing-jing;Chen Xi-guang;Yan Ji-hong;Sun Fang;Fan Sha-sha;Cao Gang;Zhou Yi-fa

作者机构:

关键词: Leymus chinensis;Polysaccharide;Fractionation

期刊名称:CHEMICAL RESEARCH IN CHINESE UNIVERSITIES ( 影响因子:1.307; 五年影响因子:0.979 )

ISSN: 1005-9040

年卷期: 2012 年 28 卷 4 期

页码:

收录情况: SCI

摘要: Leymus chinensis(Trin.) Tzvel., widely distributed at eastern Eurasian steppe and divided into gray-green type and yellow-green type, has different stress resistance to environment. In the present study, the water-soluble polysaccharides from two ecotypes of L. chinensis were analyzed in detail, and the differences between polysaccharides from the two ecotypes of L. chinensis in the yield, monosaccharide composition, molecular weight and structure were clarified. The polysaccharides of L. chinensis were composed of both neutral and acidic polysaccharides. The neutral polysaccharides contained mannose, glucose, galactose, xylose and arabinose, and mainly consisted of beta-1,4-Glcp, alpha-1,3-Galp and alpha-1,2-Xylp residues. The acidic polysaccharides contained mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, xylose and arabinose. However, the yields, monosaccharides contents and the molecular weights of the polysaccharides from the two ecotypes of L. chinensis were different. Moreover, the resistance type(gray-green type) of L. chinensis contained a number of alpha-1,3-Manp and reducing end of beta-Glcp residues, and much more O-methyl groups than normal type(yellow-green type) of L. chinensis. The differences of the polysaccharides of the two ecotypes of L. chinensis might be due to the long-term environmental adaptability of plant, and the differences of the polysaccharides might influence the stress resistance of L. chinensis.

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