化学
直链淀粉
差示扫描量热法
结晶度
支链淀粉
回生(淀粉)
食品科学
傅里叶变换红外光谱
淀粉糊化
抗性淀粉
多糖
作者
Rui He,Wen-ting Shang,Yong-gui Pan,Dong Xiang,Yong-Huan Yun,Wei-min Zhang
标识
DOI:10.1016/j.ijbiomac.2020.12.008
摘要
Abstract This work investigated the effects of hot air drying pretreatment (HAD), freeze drying pretreatment (FD) and vacuum drying pretreatment (VD) on the physicochemical properties and structural characterizations of starch isolated from canistels. X-ray diffraction displayed that the starches separated from canistel by different drying pretreatments showed a typical A-type crystal structure. The SEM image showed that cracks and debris appeared on the surface of HVD and VD particles. The molecular structure of starches obtained by different drying pretreatments was studied using Fourier infrared and solid state 13C CP/MAS NMR analysis. The results indicated that vacuum drying pretreatment could promote the formation of the double helix of starch granules, and hot air drying and freeze drying destroyed the ordered structure of starch granules. These structural changed to affect the physicochemical properties of starch granules. The study of different drying pretreatments to separate starches provided practical value for drying pretreatments. Furthermore, the current study affords information for canistel starches cultivated in China that would be convenient for commercial applications.
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