摘要
将2012年新收获粳稻谷的水分调至14.5%,定量装入多个密封袋中,通过充氮,将氧气浓度分别调为2%、5%、8%、21%后分别置于20℃、25℃的人工气候箱中模拟储藏180d,每30d测定1次其发芽糙米中γ-氨基丁酸的含量,研究气调储藏粳稻谷对其发芽糙米中γ-氨基丁酸含量的影响。结果显示:不同氧气浓度和不同温度条件下储藏的粳稻谷,其发芽糙米中GABA含量随储藏时间的延长而逐渐降低,低氧条件下GABA减少的幅度小于自然条件下,20℃下GABA的减少幅度低于25℃下。通过SAS软件分析,发现温度、氧气浓度、储藏时间对发芽糙米GABA的变化有显著影响且相互之间具有交互作用。在本实验储藏条件下,通过F值比较可知:储藏时间对GABA含量影响最大,其次是储藏温度和氧气浓度。
In this experiment, we use harvested japonica rice samples in 2012 and decrease the moisture of them to 14.5%. Then all the rice samples were encased quantitatively in sealed bags and were stored at 20℃, 25℃ to simulate storage 180d, respectively oxygen concentration were 2%, 5%, 8%, 21% by charging N2. Studed the effects of controlled atmosphere storage on the content ofγ--aminobutyric acid in germina- ted brown rice, the content of γ-aminobutyrie acid in germinated brown rice were detected every 30 days. Results showed that under different oxygen concentrations and different temperature conditions, the con- tent ofγ--aminobutyric acid in germinated brown rice was gradually decreased, and under hypoxic condi- tions the rate of decrease is slower than that in the air, under 20℃ the rate of decrease is slower than that under 25 ℃. We used SAS software to analysis and found that temperature, oxygen concentration and stor- age time affected the variation of the content of GABA significantly, and these three factors had the inter- action. By comparing the F value, We can know that to the content of GABA, storage time was of its greatest impact, then was temperature, the oxygen concentration one by one.
出处
《粮食储藏》
2014年第2期39-43,共5页
Grain Storage
基金
"十二五"国家科技支撑计划项目(2011BAD03B02)
关键词
粳稻谷
充氮
储藏
发芽糙米
Γ-氨基丁酸
Japonica rice, charge of Nz, storage germinated brown rice, r-aminobuty rice
