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Structural Characterisation Of A Heteropolysaccharide By Nmr Spectra

文献类型： 外文期刊

作者： Ye, LiBin 1 ; Zhang, JingSong 1 ; Yang, Yan 1 ; Zhou, Shuai 1 ; Liu, YanFang 1 ; Tang, Qinglui 1 ; Du, Xiuju 1 ; Chen, Hu 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Edible Fungi, Shanghai 201106, Peoples R China

2.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China

3.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 200090, Peoples R China

关键词： ganoderma lucidum;polysaccharide;structural elucidation;NMR

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： An undocumented water-soluble polysaccharide, LZ-C-1, was isolated from the fruiting bodies of the fungus, Ganoderma lucidum. The polysaccharide had a molecular weight of 7 × 10~3 Da, and was mainly composed of l-Fuc, d-G1c and D-Gal. LZ-C-1 had a sugar content of ～96.4% as measured using the phenol-sulphuric acid method. As a precondition to understand the bioactivity, structural features of LZ-C-1 were investigated by a combination of total hydrolysis, methylation analysis, FT-IR and NMR studies. The results indicated that LZ-C-1 had a backbone of 1,6-disubstituted-α-galactopyranosyl, 1,2,6-trisubsti-tuted-a-galactopyranosyl, 1,3-disubstituted-β-glucopyranosyl and 1,4,6-trisubstituted-β-glucopyranosyl residues. The branches were mainly composed of 1-substituted-β-glucopyranosyl and 1-substituted-α-fucopyranosyl residues.

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