Amylopectin retrogradation enthalpy (DHr) of cooked rice was
shown in Fig. 3. Most recrystallization of cooked rice occurred
during the first 3 days of storage. The retrogradation process
continued up to 7 days and then slowed down during the last 7
days of storage, and the retrogradation process finished within 14
days. The DHr of cooked rice increased with decrease of freezing
rate within 3 days of storage. This results suggested that frozen
cooked rice retrograded much more slowly with fast freezing than
slow freezing (0.09 C/min) when chill storage for less than 3 days.
Fast freezing probably took the starchy food through the temperature
zone of maximum staling faster than slow freezing, so the
slow freezing had higher retrogradation enthalpy than fast freezing