کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7786447 | 1500622 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stepwise ethanolic precipitation of sugar beet pectins from the acidic extract
ترجمه فارسی عنوان
پتکتین های چغندرقند از نظر عصاره اسیدی گام به گام اتانولی
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کلمات کلیدی
پکتین چغندر قند، بارش اتانولی، تقسیم بندی، مشخصات،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
A stepwise ethanol-precipitation (SEP) procedure was developed for the purification of sugar beet pectins (SBP) from a pectin-containing aqueous extract. Five fractions of different chemical and molecular characteristics were produced by stepwise elevating the alcohol concentration of the precipitation medium from 50% to 80% v/v. Comparison of chemical and macromolecular features between the obtained fractions indirectly suggested that the ability of pectin to solubilize in the ethanol-water binary mixture depended greatly on the polymer structure. Fractions rich in neutral sugars were precipitated at relatively high ethanol concentrations, probably due to the enhanced interactions generated between pectin side chains and solvent molecules. Furthermore, the obtained fractions displayed different surface activities. Results obtained in this work indicate that the SEP procedure is more selective with respect to pectin structural features and surface properties than the one-step ethanolic precipitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 136, 20 January 2016, Pages 316-321
Journal: Carbohydrate Polymers - Volume 136, 20 January 2016, Pages 316-321
نویسندگان
Xiaoming Guo, Hecheng Meng, Siming Zhu, Qiang Tang, Runquan Pan, Shujuan Yu,