Unusual partially 3-O-methylated α-galactan from mushrooms of the genus Pleurotus

被引：35

作者：

Carbonero, Elaine R. ^{[1
]}

Gracher, Ana Helena P. ^{[1
]}

Rosa, Moira Caroline C. ^{[1
]}

Torri, Giangiacomo ^{[2
]}

Sassaki, Guilherme L. ^{[1
]}

Gorin, Philip Albert J. ^{[1
]}

Iacomini, Marcello ^{[1
]}

机构：

[1] Univ Fed Parana, Dept Bioquim & Biol Mol, BR-88153198 Curitiba, Parana, Brazil

[2] Ist Ric Chim & Biochim G Ronzoni, I-20133 Milan, Italy

来源：

PHYTOCHEMISTRY | 2008年 / 69卷 / 01期

关键词：

edible mushrooms; Pleurotus eryngii; Pleurotus ostreatoroseus; O-methylated galactan; chemical structure;

D O I：

10.1016/j.phytochem.2007.06.018

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：

Indistinguishable partially 3-O-methylated galactans were isolated from the edible basidiomycetes Pleurotus eryngii and Pleurotus ostreatoroseus. They were obtained via successive aqueous extraction, freeze-thawing, precipitation with Fehling solution of soluble material, and ultratiltration. Mono- and bidimensional C-13 and H-1-nuclear magnetic resonance spectroscopy (HMBC, HETEROTOCSY, COSY, and HMQC), and methylation analysis were used to determine their structures. They were linear, partially 3-O-methylated, (1 -> 6)-linked alpha-D-galactans containing Gal and 3-Me-Gal, in a 3:1 molar ratio (GC-MS of alditol acetates). (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：252 / 257

页数：6

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