کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
681072 1459998 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Separation and fractionation of exopolysaccharides from Porphyridium cruentum
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Separation and fractionation of exopolysaccharides from Porphyridium cruentum
چکیده انگلیسی

In this work the extraction of EPSs from culture media of Porphyridium cruentum, by dialysis, solvent-precipitation with 3 polar alcohols (methanol, ethanol and isopropanol) and membrane separation techniques has been studied. Diafiltration (DF) using a membrane with a 300 kDa molecular weight cut off was the most efficient technique compared to solvent-extraction and dialysis methods. After extraction, EPS fraction was characterized in terms of rheological properties and biochemical content. The product exhibited shear thinning behavior and a critical overlap concentration equal to 0.6 g/L. The monosaccharide composition was investigated after acidic hydrolysis. Xylose, galactose, glucose and glucuronic acid were identified as the main constitutive monomers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 145, October 2013, Pages 345–350
نویسندگان
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