کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7044375 | 1456997 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extraction of tea polysaccharides (TPS) using anionic reverse micellar system
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Reverse micelles extraction technology are efficient and economical alternative for extraction of bioactive molecules due to its high selectivity, fast mass transfer and relatively low cost. In this study, AOT can form wide range of reverse micellar core sizes in organic phase, which has been used to extract tea polysaccharides (TPS) in AOT/heptane reverse micellar system. Process conditions were optimized by pH, types and concentration of salts, types and concentration of alcohols. Chaotropes (GuHCl and urea) were used to improve extraction yield of tea polysaccharides in the system. In forward extraction, low concentration of GuHCl in this AOT/heptane system may influence the TPS structure and suppress its aggregation formation and promote its solubilization into the water cores. Under optimal conditions (pH 4.6, 0.05 mol Lâ1 NaCl, 7% [v/v] methanol and 0.06 mol Lâ1 GuHCl), the forward extraction recovery reached 34%. In backward extraction, 100% of backward recovery was achieved by adding GuHCl or urea.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 122, 10 February 2014, Pages 306-314
Journal: Separation and Purification Technology - Volume 122, 10 February 2014, Pages 306-314
نویسندگان
Songli Li, Xuejun Cao,