Rice is a staple food for more than half of the world's population and it is regarded as a high glycemic index (GI) food. Breeders developed high amylose rice having low digestibility, but it also has inferior palatability. This study used high-amylose rice (HAR) produced by gamma irradiation and compared the digestion and physicochemical properties related to palatability with those of low-amylose rice (LAR). Pre-soaking and different-pH treatments were adopted to find a way to enhance the palatability of HAR while maintaining its low digestibility. After pre-soaking, HAR had a higher water uptake ratio (4.68 4.11 g g), proportion of leached starch (16.6 12.6%) and adhesiveness (77 . 39), but lower setback (0.092 0.107 Pa s), hardness (10.1 12.6 kg) and resilience (0.20 0.25). The results showed that pre-soaking was able to enhance the quality of the cooked rice mainly by modifying the starch amorphous region while maintaining the low digestibility of HAR. Pre-soaking can be adopted as a practical and effective household cooking method to prepare rice with relatively low digestibility and good palatability.
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