کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7783440 | 1500571 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical structure of a partially 3-O-methylated mannofucogalactan from edible mushroom Grifola frondosa
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An unusual heteropolysaccharide was isolated from the fruiting bodies of the medicinal mushroom Grifola frondosa, via successive cold aqueous extraction, followed by fractionation through freeze-thawing, precipitation with Fehling solution and dialysis using a membrane with a size exclusion cut-off of 500â¯kDa. Its chemical structure was determined based on total acid hydrolysis, methylation analysis and NMR studies. The mannofucogalactan had a molar mass of 15.9â¯Ãâ¯103â¯gâ¯molâ1, which was determinate by HPSEC-MALLS. This heteropolymer showed to have a main chain of (1â¯ââ¯6)-linked α-d-Galp partially substituted at O-2 by 3-O-α-d-mannopyranosyl-α-l-fucopyranosyl groups and in a minor proportion with α-l-Fucp single-unit side chains. Moreover, the presence of 3-O-Me-Galp units could also be observed in the main chain of the G. frondosa mannofucogalactan.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 187, 1 May 2018, Pages 110-117
Journal: Carbohydrate Polymers - Volume 187, 1 May 2018, Pages 110-117
نویسندگان
Gracy Kelly Faria Oliveira, Estefania Viano da Silva, Andrea Caroline Ruthes, Luciano Morais Lião, Marcello Iacomini, Elaine R. Carbonero,