产酸细菌对湿谷霉变的抑制作用及应用研究

Acid-producing Bacteria Used for Controlling Moulds of Wet Rice Grain

在我国主要水稻产区,稻谷收获时,经常由于恶劣天气的影响,稻谷不能及时干燥,以致发生严重湿谷霉变而造成大量损失,粮食生产和贮运部门都极为重视湿谷的应急防护措施。目前,在湿谷和高水分粮的贮藏中较为常用的是物理方法和防霉剂应用等手段。

The acid-producing bacterial strain C52 was isolated from rice grains. It produced acid in high capacity to inhibit the growth of Aspergillus and Penicillium, which were the main pathogens. Results of laboratory tests in 1989 and 1990 indicated that bacterial C52 decreased the mildew of wet grains. When wet grains were treated with C52 bacterial suspension, their rate of mould, spore number per gram of grain and rate of yellow kernel were lower than those of control. Mould control effect of C52 were increased if the bacterial suspension mixed with sterilized ash before tests, as ash could make the bacteria spread bet- ter.