糙米二次加湿调质工艺优化与试验

Optimization of Technology for Twice Moisture Conditioning Treatment for Brown Rice

为解决干燥后储藏的低含水率稻谷碾米加工时存在整精米率低且能耗高以及单次加湿又无法满足加湿目标的问题,以糙米(含水率12%)为原料,研究二次加湿调质工艺中单次加湿量、润糙温度及润糙间隔时间对整精米率的影响规律。在单因素试验的基础上,采用二次旋转组合设计方法,用SAS软件处理试验数据,并进行验证试验。结果表明,在单次加湿量为1.56%、润糙温度为29.6℃、润糙间隔时间为64.6 min的条件下,整精米率提高15.42%,碾米能耗降低26.86%。

In order to solve the problems of low head rice yield（HRY）,high energy consumption and unable to reach the anticipate target after once moisture conditioning treatment（MCT） when milling the stored desiccated low-moisture brown rice,a study on the laws of effects that different amounts of moisture,the temperatures during the rice moisturizing and the time between the two MCT have on HRY during the twice MCT for brown rice was conducted with the materials of brown rice（the moisture content was 12%）.Based on the single-factor tests,composite tests of quadratic orthogonal rotation were designed and the experimental data was analyzed with SAS.From the testable experiments,it was proved that HRY increased by 15.42% and the energy consumption decreased by 26.86%.When the moisture increased by 1.56% each time,the temperature was 29.6℃and the time between the two experiments was 64.6min.