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  • Title: Dual modification of potato starch: Effects of heat-moisture and high pressure treatments on starch structure and functionalities.
    Author: Colussi R, Kringel D, Kaur L, da Rosa Zavareze E, Dias ARG, Singh J.
    Journal: Food Chem; 2020 Jul 15; 318():126475. PubMed ID: 32135422.
    Abstract:
    This study investigated the association of heat moisture treatment (HMT) with high hydrostatic pressure (HHP) and evaluated its effects on the thermal, pasting, swelling power, solubility, morphology, and crystallinity characteristics, as well as in vitro digestibility of potato starch. The single and dual modifications significantly altered the pasting properties of potato starch except for HHP. When HHP was applied to HMT starches, the peak viscosities, setback, and final viscosities were greatly increased compared to those of the samples processed with HMT alone. Dual modification increased the transition temperatures, swelling power, and altered the relative crystallinity. The modified starch exhibited a slower rate of glucose release which decreased proportionally with increasing moisture in the HMT. Dual modification showed a remarkable ability to modify starches with different characteristics and can be used as an alternative in the elaboration of low glycaemic index foods.
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