Effects of high hydrostatic pressure on the ordered structure including double helices and V-type single helices of rice starch
Effects of high hydrostatic pressure on the ordered structure including double helices and V-type single helices of rice starch
复制标题
高静水压对大米淀粉双螺旋和V型单螺旋有序结构的影响
DOI：
10.1016/j.ijbiomac.2019.09.180
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Qun Shen
中科院分区：
文献类型：
--
作者：
Chao Wang;Yong Xue;Laraib Yousaf;Jinrong Hu;Qun Shen
本研究主要探讨了高静水压对淀粉有序结构的影响，并在糊化度相近的条件下，比较了高温和高静水压处理后的大米淀粉的有序结构，包括长程有序结构和短程有序结构以及热力学性质。（DG）。采用X射线衍射仪、傅里叶变换红外光谱仪（FTIR）、13 C交叉偏振魔角、自旋/核磁共振、差示扫描量热仪等测试手段，对晶体结构、FTIR谱带高比（R）、双螺旋结构和热力学行为进行了研究。结果表明，在DG相近的条件下，HHP处理的大米淀粉（HHGS）的结晶度、R值、双螺旋和V型单螺旋结构均高于热处理的大米淀粉（HGS）。热力学分析表明，与HGS相比，HHGS的To较低。HHGS的有序结构是紧密堆积的。HHP同时进行。诱导退火和压力诱导糊化，直至达到一定的糊化程度
This studymainly aimed to investigate the influents of high hydrostatic pressure (HHP) on the ordered structures.of starch, for this purpose, we compared the ordered structure of rice starch treated by HHP and heat, including.long- and short-range ordered structures and thermodynamic properties at similar levels of gelatinization degree.(DG). X-ray diffractometer, Fourier transform infrared spectrometer (FTIR), 13C cross polarization magic angle.spinning/NMR, and Differential scanning calorimeter were used to detect crystal structure, band height ratio in.FTIR spectra (R), double helix structure, and thermodynamic behavior. Results showed that HHP-treated rice.starch (HHGS) had greater crystallinity, larger R, and more double helix and V-type single helix structures as.compared to heat-treated rice starch (HGS) at a similar DG. The thermodynamic analysis illustrated that To of.HHGS was lower as compared to HGS. The ordered structure of HHGS was close packaged. HHP simultaneously.induced annealing and pressure-induced gelatinization until achieving a certain degree of gelatinization