糙米在低温高海拔地区的储藏试验研究

EXPERIMENT OF BROWN RICE STORAGE IN HIGH ATTITUDE AND LOW TEMPERATURE AREA

利用低温高海拔地区的自然条件,采取低温季节自然通风和高温季节保温密闭措施,对糙米储藏环境及其品质进行了研究.结果表明:仓内低温环境控制良好,可以实现糙米安全储藏3 a.糙米储藏3 a后,脂肪酸值增量为13.7 mg/100 g,年平均增量为4.6 mg/100 g,变化幅度基本满足设定的变化要求(变化幅度≤5 mg/100 g.年,脂肪酸值≤37 mg/100 g),符合籼稻储存品质轻度不宜存(≤37 mg/100 g)的要求.糙米发芽率略低于稻谷,但差别不大.糙米储藏3 a与同期储藏的稻谷相比,食味品质变化不大;糙米水分未降低,反而有所升高,达到了预期的目标.

The paper studied the storage environment and the quality of brown rice by adopting natural ventilation in low-temperature seasons and taking thermal insulation and airtight measures in high-temperature seasons based on the natural conditions of the high attitude and low temperature area.The results showed that the brown rice could be stored safely for 3 years when in-silo low-temperature environment was well controlled.After the 3-year storage,the increase amount of fatty acid value was 13.7 mg/100g,the annual average increase amount was 4.6 mg/100g,and the change range substantially met the set requirement（the change range equal to or smaller than 5 mg/100g every year,and the fatty acid value equal to or smaller than 37 mg/100 g）,which met the requirement of moderate storage quality of hsien rice（≤37 mg/100 g）.The germination rate of brown rice was slightly smaller than that of rice,but had little difference.Compared to rice stored for the same time period,the brown rice stored for 3 years had no significant change of the taste quality.The moisture content of the brown rice did not decrease but rose to reach the expected target.