复合菌种固态发酵饲料的工艺优化

Optimization for Process of Solid State Fermentation Feed with Composite Bacteria

以玉米粉和豆粕为底料,采用复合菌种进行固态发酵。在单因素实验的基础上,确定接种量、发酵温度、发酵时间作为实验参数。以可消化粗蛋白含量作为指标,利用正交实验对发酵条件进行优化。结果表明,最佳发酵参数为接种量1%、发酵时间3d、发酵温度30℃。在此条件下,发酵产物中可消化粗蛋白含量为29.58%,较初始物料提高了57.09%。

With corn flour and soybean meal as the base materials,the solid state fermentation was carried out by composite bacteria. On the basis of single factor experiment,the inoculation amount,fermentation temperature and fermentation time were chosen as the experimental parameters. The fermentation conditions were optimized by orthogonal experiment with utilizable crude protein( u CP) as indexes. The results showed that the optimal fermentation parameters were inoculation amount 1%,fermentation time 3d and fermentation temperature 30℃. Under this condition,the content of utilizable crude protein in fermentation products was 29. 58%,which was increased by57. 09% compared to the raw materials.