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Carbohydr Res. 2009 Jul 27;344(11):1365-70. doi: 10.1016/j.carres.2009.05.009. Epub 2009 May 18.

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

Author information

1
Department of Chemistry and Chemical Technology, Vidyasagar University, Midnapore 721102, West Bengal, India.

Abstract

A water-soluble polysaccharide was isolated from hot aqueous extracts of fruits of Psidium guajava. 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 ((1)H, (13)C, TOCSY, DQF-COSY, NOESY, ROESY, HMQC, and HMBC), the structure of the repeating unit of the polysaccharide was established as [carbohydrate structure: see text].

PMID:
19500779
DOI:
10.1016/j.carres.2009.05.009
[Indexed for MEDLINE]

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