AbstractThe starches and flours from four different rice
cultivars were evaluated for composition, crystallinity
characteristics, blue value, turbidity, swelling power, solubility, pasting properties, and textural and retrogradation
properties. The amylose content of starches and flours from
different rice cultivars differed significantly. The results
showed that the physicochemical properties of rice starch
and rice flour were correlated to amylose content. The
crystallinity degree of rice starch and flour depended on
amylose content. The blue value, turbidity value, and gel
hardness were positively correlated to amylose content;
however, the swelling power, solubility, and gel adhesiveness were negatively correlated to amylose content.
Furthermore, the pasting properties and gel textural and
retrogradation properties of rice flours were related to the
structure properties of rice starch. And the characteristics of
starch, protein, and lipid significantly influenced the
turbidity, pasting properties, and gel textural and retrogradation properties of rice flours