Structural studies of a heteropolysaccharide (PS-I) isolated from hot water extract of fruits of Psidium guajava']java (Guava)

被引：24

作者：

Mandal, Soumitra ^{[1
]}

Sarkar, Ramsankar ^{[1
]}

Patra, Pradip ^{[1
]}

Nandan, Chanchal K. ^{[1
]}

Das, Debsankar ^{[1
]}

Bhanja, Sunil K. ^{[1
]}

Islam, Syed S. ^{[1
]}

机构：

[1] Vidyasagar Univ, Dept Chem & Chem Technol, Midnapore 721102, W Bengal, India

来源：

CARBOHYDRATE RESEARCH | 2009年 / 344卷 / 11期

关键词：

Psidium gua[!text type='java']java[!/text; Fruit; Polysaccharide; Structure; NMR analysis; L; POLYSACCHARIDES; CONFIGURATION; LEAVES; ACID;

D O I：

10.1016/j.carres.2009.05.009

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A water-soluble polysaccharide was isolated from hot aqueous extracts of fruits of Psidium guajova. The polysaccharide was found to contain 2-O-methyl-L-arabinose, 2-O-acetyl-D-galactose, and D-methyl galacturonate in a molar ratio of approximately 1:1:1. On the basis of acid hydrolysis, methylation analysis, periodate oxidation, and NMR studies (H-1, C-13, TOCSY, DQF-COSY, NOESY, ROESY, HMQC, and HMBC), the structure of the repeating unit of the polysaccharide was established as A C B -> 4)-2-O-Me-alpha-L-Arap-(1 -> 2)-alpha-D-GalpA6Me-(1 -> 4)-2-O-Ac-alpha-D-Galp-(1 -> (C) 2009 Elsevier Ltd. All rights reserved

引用

页码：1365 / 1370

页数：6

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