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  • Title: Changes in crystal structure and physicochemical properties of potato starch treated by induced electric field.
    Author: Li D, Yang N, Jin Y, Zhou Y, Xie Z, Jin Z, Xu X.
    Journal: Carbohydr Polym; 2016 Nov 20; 153():535-541. PubMed ID: 27561526.
    Abstract:
    The effects of induced electric field (IEF) on the crystal structure and physicochemical properties of potato starch were investigated by subjecting identically treated control and electrically-modified samples to the same temperature history. Additionally, a method of combining IEF with heating for efficient modification of native polymer was also proposed. Results showed that the application of IEF at an electric voltage of 75V has a statistically significant effect on starch gelatinization and pasting properties, especially when combined with heating at 50°C. After treatment by the combination method for 96h, the gelatinization temperatures increased, which can be explained by the slight increase in the ratio of 1044/1015cm(-1) and relative crystallinity. Furthermore, IEF reduced granular swelling and therefore contributed to decreasing the peak, breakdown, and setback viscosity of potato starch. This study explores the potential of IEF as innovative technology for starch modification.
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