The molecular characterization of the polysaccharide gum from Langucularia racemosa

被引：10

作者：

de Pinto, GL

de Gotera, OG

Martinez, M

Ocando, E

Rivas, C

机构：

[1] Univ Zulia, Fac Humanidades & Educ, Ctr Invest Quim Prod Nat, Maracaibo 4011, Venezuela

[2] Inst Venezolano Invest Cient, Ctr Quim, Caracas, Venezuela

来源：

CARBOHYDRATE POLYMERS | 1998年 / 35卷 / 3-4期

关键词：

D O I：

10.1016/S0144-8617(97)00153-7

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A polysaccharide isolated from the exudate of Laguncularia racemosa, (Combretaceae) has been investigated using Smith-degradation, methylation analysis, hydrolysis, and C-13-NMR spectroscopy. The backbone of the structure is constituted of uronic acids, galactose and rhamnose. A complex pentasaccharide, constituted of these sugars, was isolated from the original gum and degradation products. This oligosaccharide is, probably, the main structural feature of the investigated polysaccharide. On the other hand, according to chemical and spectral evidence rhamnose is present, predominantly as internal residues. Arabinosyl (pyranosyl and furanosyl) residues and some galactosyl, glucuronic acid and 4-O-methyl-alpha-D-glucuronic acid residues are located in branches. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：205 / 213

页数：9

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