Preparation and characterization of dialdehyde starch by one-step acid hydrolysis and oxidation

被引：97
作者：
Zuo, Yingfeng [1 ,2 ]
Liu, Wenjie [1 ]
Xiao, Junhua [1 ]
Zhao, Xing [1 ,2 ]
Zhu, Ying [1 ]
Wu, Yiqiang [1 ,2 ]
机构：
[1] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China
[2] Cent South Univ Forestry & Technol, Hunan Prov Collaborat Innovat Ctr High Efficiency, Changsha 410004, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2017年 / 103卷
基金：
中国博士后科学基金;
关键词：
Dialdehyde starch; Corn starch; Acid hydrolysis and oxidation; Sodium periodate; One-step method; PHYSICOCHEMICAL PROPERTIES; POTATO STARCH;
D O I：
10.1016/j.ijbiomac.2017.05.188
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Dialdehyde starch was prepared by one-step synthesis of acid hydrolysis and oxidation, using corn starch as the raw material, sodium periodate (NaIO4) as the oxidant, and hydrochloric acid (HCl) as the acid solution. The prepared dialdehyde starch was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and gel permeation chromatography (GPC). The results confirmed that oxidation occurred between the starch and NaIO4. The acid hydrolysis reaction reduced the molecular weight of starch and effectively improved the aldehyde group contents (92.7%). Scanning electron microscope (SEM) analysis indicated that the average particle size decreased after acid hydrolysis and oxidation reaction. X-ray diffraction (XRD) and thermal gravimetric analyzer (TGA) analysis demonstrated that the crystallinity of the obtained dialdehyde starch showed a downward trend and a decelerated thermal decomposition rate. The starch after acid hydrolysis and oxidation exhibited lower hot paste viscosity and higher reactivity. (C) 2017 Published by Elsevier B.V.
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页码：1257 / 1264
页数：8
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