Effect of High Hydrostatic Pressure Treatment on Physicochemical and Structural Characteristics of Corn Starch/Ferulic Acid Composite System
2023
ZHENG Qihang, MIAO Zhenchi, SONG Bin, WANG Tianchi, WANG Xinzhi, YI Ning, XU Xiuying, ZHENG Mingzhu, ZHAO Chengbin, LIU Jingsheng
In this study, we investigated the effect of high hydrostatic pressure (HHP) treatment on the physicochemical and structural properties of corn starch/ferulic acid (CS/FA) composite system by differential scanning calorimetry (DSC), rheometer, Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD). The results showed that HHP treatment enhanced the peak viscosity, elastic modulus G’ and viscous modulus G”, and reduced the solubility and degree of expansion (75–95 ℃), enthalpy of gelatinization, and retrogradation value of the composite system. In addition, HHP treatment increased the particle size of the composite system, and FTIR and XRD spectra showed that the short-range ordered and double helix structure of the composite system decreased after HHP treatment; the starch particles were still A-type, but the relative crystallinity decreased. In summary, HHP treatment promoted the interaction between corn starch and ferulic acid in the composite system, improved the physicochemical properties of corn starch, and reduced its ordered structure.
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