Freezing rates and storage temperatures significantly affected
the starch retrogradation and textural properties of cooked rice.
The textural properties (hardness and adhesiveness) of cooked
rice correlated with freezing rates and starch retrogradation. The
cooked rice processed with higher freezing rates was observed to
have a lower hardness and higher adhesiveness. Slow freezing
rate (0.09 C/min) processing increased cooked rice staling
during freezing process, and rapid freezing rate (1.45 C/min)
processing can produce a better quality of cooked rice during
freezing process. Rapid freezing (1.45 C/min) combined with
frozen storage at 18 C can effectively retard starch retrogradation
and maintain the texture properties of cooked rice for at
least 7 months. However, if the freezing rates of frozen cooked
rice were 0.26e0.53 C/min, the initial advantage (lower hardness
and higher adhesiveness value) gained by rapid freezing was
lost during long time frozen storage. Furthermore, the slight
advantages (lower hardness and higher adhesiveness value)
gained by rapid freezing of the cooked rice, is lost very quickly
during chill storage at 4 C. Therefore, rapid freezing combined
with frozen storage at 18 C can produce a high quality of
cooked rice for at least 7 months. These findings, if generally
applicable to cooked rice products, could have important quality
and economic implications for the convenience of the food
industry.
Freezing rates and storage temperatures significantly affectedthe starch retrogradation and textural properties of cooked rice.The textural properties (hardness and adhesiveness) of cookedrice correlated with freezing rates and starch retrogradation. Thecooked rice processed with higher freezing rates was observed tohave a lower hardness and higher adhesiveness. Slow freezingrate (0.09 C/min) processing increased cooked rice stalingduring freezing process, and rapid freezing rate (1.45 C/min)processing can produce a better quality of cooked rice duringfreezing process. Rapid freezing (1.45 C/min) combined withfrozen storage at 18 C can effectively retard starch retrogradationand maintain the texture properties of cooked rice for atleast 7 months. However, if the freezing rates of frozen cookedrice were 0.26e0.53 C/min, the initial advantage (lower hardnessand higher adhesiveness value) gained by rapid freezing waslost during long time frozen storage. Furthermore, the slightadvantages (lower hardness and higher adhesiveness value)gained by rapid freezing of the cooked rice, is lost very quicklyduring chill storage at 4 C. Therefore, rapid freezing combinedwith frozen storage at 18 C can produce a high quality ofcooked rice for at least 7 months. These findings, if generallyapplicable to cooked rice products, could have important qualityand economic implications for the convenience of the foodindustry.
การแปล กรุณารอสักครู่..
