探究变温干燥对稻谷特性与干燥品质的影响  

Effects of Variable Temperature Drying on Drying Characteristics and Quality of Paddy

作　　者：张亚伟 尹君 渠琛玲[1] Zhang Yawei;Yin Jun;Qu Chenling(National Engineering Laboratory of Grain Storage and Transportation,College of Grain and Material Reserves,Henan University of Technology,Zhengzhou 450000;Academy of National Food and Strategic Reserves Administration,National Engineering Research Center of Grain Storage and Logistics,Beijing 100037)

机构地区：[1]河南工业大学粮食和物资储备学院,粮食储运国家工程实验室,郑州450000 [2]国家粮食和物资储备局科学研究院粮食储运国家工程研究中心,北京100037

出　　处：《中国粮油学报》2024年第3期42-47,共6页Journal of the Chinese Cereals and Oils Association

摘　　要：为提高稻谷干燥速率和改善干燥后品质,将玻璃化转变理论应用于稻谷变温干燥工艺,分析变温和恒温干燥工艺中初始水质量分数、变温幅度和热风风速对稻谷干燥速率和干燥后品质(爆腰增率和整精米率)的影响。结果表明:相比于恒温干燥工艺,橡胶态变温干燥工艺的干燥速率高,稻谷干燥后品质明显改善;玻璃态变温工艺干燥速率最慢,其干燥后的品质优于稻谷橡胶态变温干燥和恒温干燥。综合考虑稻谷干燥速率和干燥后品质变化,橡胶态变温干燥工艺可有效提高稻谷干燥速率,改善稻谷干燥后品质。In order to increase the drying rate and improve the quality of paddy after drying,the glass transition theory was applied to the drying process of paddy with variable temperature.The effects of initial moisture content,variable temperature range and hot air speed on drying rate and quality of paddy after drying(additional crack percentage and head rice yield)were analyzed.The results indicated that,compared with the constant temperature drying process,the rubber drying process with variable temperature had a higher drying rate,and the paddy quality was obviously improved after drying.The drying rate of the glass state with changing temperature process was the slowest,and the quality of paddy after drying was better than that of the rubber state with changing temperature drying process.Considering paddy drying rate and quality after drying,the rubber drying process with variable temperature can effectively improve the drying rate and post-drying quality of paddy.

关 键 词：稻谷 变温干燥 玻璃化转变 

分 类 号：S375[农业科学—农产品加工]