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  • Title: Water irrigation management affects starch structure and physicochemical properties of indica rice with different grain quality.
    Author: Xiong R, Xie J, Chen L, Yang T, Tan X, Zhou Y, Pan X, Zeng Y, Shi Q, Zhang J, Zeng Y.
    Journal: Food Chem; 2021 Jun 15; 347():129045. PubMed ID: 33486361.
    Abstract:
    The effects of water irrigation management including conventional irrigation (CK), constant flooding irrigation (CFI) and alternate wetting and drying (AWD) on starch structure and physicochemical properties of two indica rice cultivars with good- and poor-quality were evaluated in the field condition with two years. The results showed that AWD could significantly increase peak viscosity, breakdown and gelatinization temperature, decreased setback and gelatinization enthalpy in two indica rice cultivars. However, starch granule size and amylopectin chain length distribution were differed the trends in the rice cultivars and treatments. AWD reduced starch granules size and amylopectin short chain, especially for large starch granules, but increased medium and long chain, which might contribute to better thermal stability and pasting viscosity for good-quality cultivar. Our study indicated that water irrigation management affected starch structure and physicochemical properties of indica rice starch, and would provide favorable information for improvement of rice starch in food industry.
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