| Literature DB >> 17675195 |
Elaine R Carbonero1, Ana Helena P Gracher, Moira Caroline C Rosa, Giangiacomo Torri, Guilherme L Sassaki, Philip Albert J Gorin, Marcello Iacomini.
Abstract
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 ultrafiltration. Mono- and bidimensional 13C and 1H-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).Entities:
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Year: 2007 PMID： 17675195 DOI： 10.1016/j.phytochem.2007.06.018
Source DB: PubMed Journal: Phytochemistry ISSN： 0031-9422 Impact factor: 4.072