【摘要】 研究了3种籼稻(浙富802、元隆8462与早籼5-34)在不同贮藏温度(36,25,4℃)和时间(0～3个月)下的糊化特性变化。结果表明,当贮藏温度为36℃时,贮藏时间与籼稻糊化特性显著相关(P<0.05),表现在籼稻的峰值黏度和崩解值均先上升后下降,冷糊黏度先上升后趋于稳定,回生值和糊化温度均上升,但变化时间点和程度受籼稻品种的影响。当贮藏温度为25℃时,籼稻糊化特性指标中除回生值和糊化温度未发生显著变化(P>0.05)外,其他指标的变化趋势与36℃时的基本一致,但变化时间明显滞后36℃。4℃贮藏对籼稻的糊化特性无显著影响(P>0.05)。说明,36℃可以作为籼稻加速陈化的温度,加速陈化的换算时间跟籼稻品种有关;4℃则可以作为对照组。更多还原

【Abstract】 The pasting properties of three cultivars of Indica rice(Zhefu 802,Yuanlong 8462,‘Zaoxian 5-34’),at different temperature(36,25,and 4 ℃)during 0～3 months storage,were studied to understand effects of storage temperature and duration.The results indicated that the storage time was significant(P<0.05)correlated to pasting properties of rice when stored at36℃.The peaks of viscosity and breakdown both increased first and then decreased.The cool paste viscosity increased first and then stabilized,and setback and pasting temperature showed an upward trend.However,the pasting properties varied depending on the rice cultivar.When rice was stored at 25℃,no significant(P>0.05)change in setback and pasting temperature of rice was found,and the trends in other pasting properties index were consistent with those of the 36℃groups,while the change time was significantly delayed compare to that of 36 ℃ groups.When rice was stored at 4℃,no significant change was found in the pasting properties.Our research results indicated that 36℃could be used as a temperature for accelerated aging of rice.The conversion time for accelerated aging was related to rice cultivar,and 4℃could be used as a control group.更多还原