Study on the Hydrogen Bond Interaction Between Soy Protein Isolate and Glycerol Using Two-Dimensional Correlation Fourier-Transform Infrared Spectroscopy
A series of soy protein isolate (SPI) films plasticized by glycerol (Gly) were studied using attenua ted total reflectance-Fourier transform infrared spectroscopy (ATR/FTIR).Perturbation-correlation moving window two-dimensional (PCMW2D) and two-dimensional correlation (2DCOS) analyses were applied to the amide Ⅰ band and thus the hydrogen bond interaction between SPI and Gly was systematically investigated.When Gly concentrations were in the range 0~35%, the hydrogen bond among β-sheets was replaced by the one between SPI chain and Gly molecule, which caused these protein chains being changed to α-helix.Howev er, the transformation of β-sheet to α-helix was saturated and both of them tend to change to random coil when Gly concentrations were in the range 35%~60%.
Two-dimensional correlation infrared spectroscopy Soy protein isolate Glycerol Hydrogen bond interaction
YAN Zhi-wei YANG He-li ZHANG Pu-dun
Analysis & Test Center, Beijing University of Chemical Technology, Beijing 100029, China
国内会议
福州
英文
85-86
2016-10-27（万方平台首次上网日期，不代表论文的发表时间）