期刊
CARBOHYDRATE RESEARCH
卷 339, 期 9, 页码 1631-1636出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2004.04.006
关键词
Aeromonas gum; polysaccharide structure; NMR; Aeromonas nichidenii
Aeromonas (A) gum, an extracellular heteropolysaccharide produced by the bacterium Aeromonas nichidenii strain 5797, was studied by H-1 and C-13 NMR spectroscopy including 2D COSY, TOCSY, H-1, C-13 HMQC, HMBC and ROESY experiments after O-deacetylation and Smith degradation. These investigations revealed the presence of an O-acetylated pentasaccharide repeating unit composed of mannose, glucose, xylose and glucuronic acid, and it has the following structure: [GRAPHICS] (C) 2004 Elsevier Ltd. All rights reserved.
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