化学
多糖
水解
酸水解
苯酚
立体化学
二维核磁共振波谱
碳-13核磁共振
葡甘露聚糖
糖
有机化学
生物化学
作者
Libin Ye,Jing Wang,Yan Yang,Shuai Zhou,Yanfang Liu,QingJui Tang,Xiu-Ju Du,Hui Chen,Yonggui Pan
出处
期刊:Food Chemistry
[Elsevier]
日期:2009-02-15
卷期号:112 (4): 962-966
被引量:61
标识
DOI:10.1016/j.foodchem.2008.07.017
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 × 103 Da, and was mainly composed of l-Fuc, d-Glc 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-trisubstituted-α-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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