Open AccessOptimization of starch sulfation process with a deep eutectic solvent-mixture of sulfamic acid:urea
Author(s) -
Аleksandr S. Kazachenko,
N. Yu. Vasilyeva,
Yuriy N. Malyar
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1679/5/052082
Subject(s) - sulfamic acid , sulfation , starch , urea , deep eutectic solvent , chemistry , sulfur , sulfate , solvent , eutectic system , nuclear chemistry , chromatography , organic chemistry , biochemistry , alloy
The process of sulphation of potato starch with a deep eutectic solvent, a mixture of sulfamic acid: urea, was optimized. The influence of varying factors was established - the ratio of sulfamic acid: urea (SAA: U), the ratio of starch: sulfating complex (St: SC) and the duration of the process on the sulfur content (wt.%) in the obtained starch sulfate. The data of analysis of variance for the obtained mathematical models indicate good prognostic properties. The optimal conditions for starch sulfation, which provide water-soluble sulfated starch with a high (up to 11.2% wt.) sulfur content, have been established. The optimal conditions for the process of sulfation of potato starch are the ratio SAA: U 1: 2.0-1: 2.2, the ratio St: SC 1: 3.5-1: 4.0 and the duration of the process is 118-120 minutes.