循环加湿工艺降低发芽糙米爆腰增率并提高得率  

Decreasing crack additional percentage and improving yield in preparation of germinated brown rice with cyclic moisture conditioning treatment

作　　者：张强[1] 郑先哲[1] 贾富国[1] 左彦军[1] 王爱芳[1] 王吉泰[1] 韩燕龙[1] 刘扬[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业工程学报》2013年第11期241-247,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家科技支撑计划项目(2012BAD34B0205-2);黑龙江省科技攻关计划资助(GC12B404)

摘　　要：为解决传统浸泡工艺制取发芽糙米过程爆腰率过高等问题,提出以循环加湿替代传统浸泡的一种发芽糙米生产新工艺。该研究以糙米为原料,采用二次正交旋转中心组合设计试验,研究循环加湿工艺中单次加湿量、间隔时间和温度对爆腰增率和发芽糙米得率的影响规律,建立了各因素对爆腰增率和发芽糙米得率影响的数学模型。用Excel软件和Design Expert软件处理试验数据,结果表明:单次加湿量、间隔时间和温度对爆腰增率和发芽糙米得率影响显著,得到优化参数组合为:单次加湿量1.2%～1.6%、间隔时间45～75min、温度30℃,该条件下爆腰增率低于33%、发芽糙米得率大于90%。循环加湿处理后爆腰增率比传统浸泡处理降低20%～70%,发芽糙米得率提高1%～16%。研究结果可为改进发芽糙米生产工艺提供参考。Compared with the polished rice and brown rice, germinated brown rice is rich in γ-aminobutyric acid. Germinated brown rice prepared by the traditional soaking treatment has the problem that crack percentage is extremely high, resulting in lower-quality germinated brown rice. Therefore, research to improve the quality of the germinated brown rice is necessary. Based on the use of moisture conditioning technology to improve the quality of brown rice, this study proposes a new method for the preparation of germinated brown rice. According to the principle of natural moisture absorption and germination of the rice seeds in the soil, germinated brown rice is prepared by gradually increasing the moisture content, until the moisture content is suitable for germination. The experiment of moisture conditioning for brown rice was carried out in a self-made test bed. Spray humidification was carried out according to certain amount of single humidification. Sealing was carried out at a certain temperature in accordance with a pre-set time interval. The brown rice after repeated moisture conditioning treatment was taken and placed under certain temperature and humidity conditions for germination. A central composite rotatable orthogonal experimental design of response surface methodology was employed. The influences of the three parameters, including the amount of moisture added, the interval time, and the temperature, on the crack additional percentage and germinated brown rice yield in repeated moisture conditioning treatment were investigated. Mathematical models for the influences of various parameters on the crack additional percentage and germinated brown rice yield were established. The test data were processed in Excel and Design Expert. Experimental results showed that the parameters of repeated moisture conditioning treatment had significant impacts on the crack additional percentage and germinated brown rice yield. The optimum parameters are added moisture in the range 1.2%-1.6%, interval time 45-75 min, and temp

关 键 词：温度 优化 工艺 循环加湿 发芽糙米 发芽糙米得率 爆腰增率 

分 类 号：TS212.4[轻工技术与工程—粮食、油脂及植物蛋白工程]