Synthetic mechanism of octenyl succinic anhydride modified corn starch based on shells separation pretreatment
文献类型： 外文期刊
作者： Gao, Wei 1 ; Sui, Jie 4 ; Liu, Pengfei 1 ; Cui, Bo 1 ; Abd El-Aty, A. M. 1 ;
作者机构： 1.Qilu Univ Technol, State Key Lab Biobased Mat & Green Papermaking, Shandong Acad Sci, Jinan 250353, Peoples R China
2.Qilu Univ Technol, Sch Food Sci & Engn, Shandong Acad Sci, Jinan 250353, Shandong, Peoples R China
3.Shandong Agr Univ, Dept Food Sci & Engn, Tai An 271018, Shandong, Peoples R China
4.Shandong Acad Agr Sci, Jinan 250131, Shandong, Peoples R China
5.Cairo Univ, Fac Vet Med, Dept Pharmacol, Giza 12211, Egypt
6.Ataturk Univ, Dept Med Pharmacol, Med Fac, Erzurum, Turkey
关键词： Synthetic mechanism; Octenyl succinic anhydride; Shells separation pretreatment
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）
ISSN： 0141-8130
年卷期： 2021 年 172 卷
页码：
收录情况： SCI
摘要： Herein, the synthetic mechanism of octenyl succinic anhydride (OSA) modified corn starch (OSCS) and granule shells (OSCs) based on shells separation pretreatment (SSP) was investigated. High intensity peaks around 1720 and 1570 cm(-1) were observed for OSCs in Fourier transform infrared (FTIR) spectra after SSP. OSCs showed higher degree of substitution (DS) values (ranging from 0.128 to 0.170) than OSCS (0.121) determined by H-1 NMR. The average molecular weight (M-w) of OSA modified CS decreased, due to the introduction of OS groups. X-ray diffraction (XRD) indicated that esterification mainly took place in the amorphous regions of starch granules. X-ray photoelectron spectroscopy (XPS) revealed that a new peak corresponding to Is orbital electrons of Na was obtained due to the introduction of OSA molecules. Meanwhile, lower surface DS and higher fluorescence intensity were noticed for OSCs. Conclusively, SSP would significantly increase the reaction efficiency of OSA modification process of CS. (C) 2021 Elsevier B.V. All rights reserved.
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