کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7612550 | 1493564 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aqueous biphasic system based on low-molecular-weight polyethylene glycol for one-step separation of crude polysaccharides from Pericarpium granati using high-speed countercurrent chromatography
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The aqueous biphasic system (ABS) plays a key role in the separation of bioactive substances, and the establishment and application of a low-molecular-weight polyethylene glycol (PEG) ABS remains a challenge in high-speed countercurrent chromatography (HSCCC). In this work, an ABS of low-molecular-weight PEG, namely PEG400-Na2SO4-H2O (20%-16%-64%, w/w/w), was developed on the basis of the phase diagram, and the phase forming time and ratio, and applied to HSCCC for the separation of polysaccharides. The crude polysaccharide extracted from Pericarpium granati (PGP) was successfully separated and three purified polysaccharides were obtained: PGP-1, with an average molecular weight of 13,210Â Da and composed of xylose (12.4%), ribose (10.1%), and glucose (77.5%); PGP-2, which is a homogeneous polysaccharide with an average molecular weight of 2584Â Da and consists of mannose; and PGP-3, with an average molecular weight of 2459Â Da and composed of ribose (51.4%), mannose (26.7%), and glucose (21.9%). This success shows that an ABS based on low-molecular-weight PEG could be applied to HSCCC separation technology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1362, 3 October 2014, Pages 129-134
Journal: Journal of Chromatography A - Volume 1362, 3 October 2014, Pages 129-134
نویسندگان
Xin-Yu Zhou, Jing Zhang, Rui-Ping Xu, Xue Ma, Zhi-Qi Zhang,