摘要
选择籼型商品大米,采用可编程人工气候箱,依据中国典型储粮环境的年平均温度、湿度,在模拟储藏条件分别设定为15℃不控湿度,15℃、相对湿度75%,20℃、相对湿度65%,25℃、相对湿度65%,30℃、相对湿度80%和自然储藏环境下,定期测定大米的糊化特征值。结果表明:随着储藏时间的延长,峰值粘度、最终粘度和保持粘度出现波动且呈总趋势增加;回生值在储藏前期各储藏条件下变化不大,而在储藏后期,常温和高温下呈增加趋势,低温和准低温下呈下降趋势。储藏时间与大米峰值粘度、最终粘度和保持粘度极显著相关。储藏前期,储藏条件对峰值粘度、最终粘度和保持粘度影响不显著,储藏后期其影响显著。
In order to investigate the stored rice quality changes and its impact factors,the commercial milled Indica rice was used as the raw material. By using programmable artificial climate chamber,the simulation storage temperature and humidity parameters were set as 15℃ without relative humidity （RH） controlling; 15℃,RH 75%; 20℃,RH 65%;25℃,RH 65%; 30℃,RH 80% and natural storage without temperature and humidity controlling according to the typical average temperature and humidity of China grain storage regions. The gelatinizing characteristic values were periodically determinated,and the results showed that the peak viscosity （PV）,final viscosity （FV） and hold viscosity （HV） had a increasing trend as the storage time extended,the change of setback （SB） value was slight in the early storage period,but in the later storage period,the changes in both normal temperature and high temperature storage conditions had increasing trends,while in low temperature or quasi-low temperature storage had decreasing trends. Storage time was significantly correlated with PV,FV and HV respectively. The effects of storage conditions on PV,FV and HV were not significant in the early storage period,but significant in the later storage period.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2010年第8期125-130,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十一五"国家科技支撑计划资助项目(2006BAD08B04-03)
关键词
大米
储藏
品质
糊化特性
Milled rice
Storage
Quality
Gelatinizing property
