碾后白米形变消除规律试验  

Experiment on deformation relief of rice after milling process

作　　者：兰海鹏[1] 贾富国[1] 赵宏伟[2] 王吉泰[1] 张强[1] 付倩[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]东北农业大学理学院,哈尔滨150030

出　　处：《农业工程学报》2011年第8期383-386,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：东北农业大学科技创新计划资助(CXT001-3-2);黑龙江省自然科学基金资助(200809)

摘　　要：为解决碾后白米抛光时碎米多的问题,该研究以碾后的白米为原料,研究温度、相对湿度以及含水率对白米形变消除时间的影响规律,采用二次旋转组合试验方法设计试验,比较了白米形变消除后抛光与碾后直接抛光的整精米率。用EXCEL软件和SAS软件处理数据,建立相关数学方程。结果表明:在试验参数范围内(温度5～45℃,含水率13%～17%,相对湿度25%～85%),碾后白米的形变经过46～69min可以消除;含水率、环境温度和相对湿度对形变消除时间影响显著;白米消除形变后抛光的整精米率明显高于直接抛光的整精米率。所建数学模型对碾后白米形变消除具有指导作用。In order to increase the percentage of head milled rice after polishing process, the effects of temperature, relative humidity and initial water content on the time of deformation relief were studied by quadratic regression rotary combination experiments. Taking rice as raw material, the head rice rate of polished rice after deformation relief were compared with that of traditional method. Excel and SAS software were employed to analyze the experimental data, and the relative mathematical model was established. The results showed that within the experimental parameters rang （temperature 5-45℃,water content 13%-17% and relative humidity 25%-85%）, 46-69 min could relieve deformation of milled rice, the initial water content, temperature and relative humidity have significant effect on the time of deformation relief. The head rice rate of polishing process after deformation relief is obviously higher than that of directly polishing process. The mathematical model can provide a theoretical support for deformation relief process of rice.

关 键 词：形变 温度 模型 整精米率 相对湿度 初始含水率 

分 类 号：TS212.2[轻工技术与工程—粮食、油脂及植物蛋白工程]