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 temperature 30℃. The crack additional percentage of germinated brown rice using the repeated moisture conditioning treatment is 20%-70% lower than that using the traditional soaking treatment. The yield of germinated brown rice using the repeated moisture conditioning treatment is 1%-16% higher than that using the traditional soaking treatment. The decrease of crack additional percentage and the increase of germinated brown rice yield are of great significance for improving the quality of the germinated brown rice. The research results can provide a reference basis for the preparation of germinated brown rice in industrial production by using the technology described in this paper.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
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)
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
temperature
optimization
technology
repeated moisture conditioning treatment
germinated brown rice
germinated brown rice yield
crack additional percentage
