کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1987244 1540296 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of extraction conditions on properties of seed xyloglucan
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Influence of extraction conditions on properties of seed xyloglucan
چکیده انگلیسی

Xyloglucans are water-soluble polysaccharides that serve as storage in cotyledonary tissues from seeds of Hymenaea courbaril among other Leguminosae. The use of xyloglucans is dependent on their solution properties. We now examine the influence of different times of extractions on its properties. Xyloglucans were obtained from milled and defatted cotyledons of H. courbaril by aqueous extraction at 25 °C for 0.25, 0.5, 1, 5, 15, 24, and 48 h. Composition data showed that increase in time lead to the increased protein contamination and arabinose content. Xyloglucans obtained with longer times of extraction had an average molar mass greater than those obtained with shorter times. The hydrodynamic radius and the radius of gyration also increased with the increase in the time of extraction. The ratio Rg/Rh was calculated and the values decreased slightly for increasing times of extraction. The effect of time also affected the viscosity which increased with the increase in time of extraction, and the longer ones probably contributing to the aggregation of xyloglucans.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 46, Issue 2, 1 March 2010, Pages 223–228
نویسندگان
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