文献类型： 外文期刊
作者： Deng, Xiaonan 1 ; Zhang, Mengnan 1 ; Liu, Kun 1 ; Pu, Mingdong 1 ; Han, Xiaozhao 1 ;
作者机构： 1.Hefei Univ Technol, Coll Chem & Chem Engn, 193 Tunxi Rd, Hefei 230009, Anhui, Peoples R China
2.Anhui Acad Agr Sci, Cotton Res Inst, 40 Nongke Rd, Hefei 230001, Anhui, Peoples R China
关键词： deep eutectic solvent; non-destructive solvent; processing; starch
期刊名称：STARCH-STARKE （ 影响因子：2.688； 五年影响因子：2.965 ）
ISSN： 0038-9056
年卷期：
页码：
收录情况： SCI
摘要： The deep eutectic solvent of [choline chloride (ChCl)] [ethylene glycol (EG)] is demonstrated to be an effective non-destructive solvent for starch processing. The pre-gelatinized starch samples are prepared by its gelatinization, treatment, and re-crystallization in this deep eutectic solvent and characterized by differential scanning calorimetry (DSC), gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (H-NMR), X-ray diffraction analyses (XRD), and scanning electron microscopy (SEM) tests. The gelatinization temperature of starch in the deep eutectic solvent of [choline chloride] [ethylene glycol] is measured using a DSC method. Compared to the native starch sample, slight increases in molecular weights and decreases in molecular weight distribution of the recovered starch samples are observed. The similar FTIR and H-NMR spectra of the native starch and recovered starch samples suggest no reaction and variation in chemical structure during the processing. The XRD and DSC tests show that the strong micro-granular crystalline structure of the native corn starch is destroyed during the gelatinization and treatment in the DES while new weak crystalline structure is formed during the re-crystallization.
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