双菌联合固态发酵生产酒糟菌体蛋白饲料的试验研究

Test on Single Cell Protein Feedstuff Production from Distiller's Grain by Using Double Strains of Bacteria

摘要: 利用以JZ－1和JZ－2组成的双菌发酵体系对白酒酒糟进行高蛋白菌体饲料化生物转化。方法为：以预处理过的酒糟粉为主要培养基，添加少许辅料，调节培养料酸度至pH为5.5～6.0，接种上述2种液体菌种进行固态发酵。该方法的培养周期为22～24 h，所得酒糟菌体蛋白饲料的粗蛋白含量接近33%，粗纤维小于14%，氨基酸种类齐全。

Abstract: Bioconversion of distiller's grain for producing single cell protein feedstuff by using double bacteria system consisting of JZ－1 and JZ－2 has been investigated.The distiller's grain has been pretreated by adding carbon source and nitrogen source in it and adjusting its acidity to approximately pH 5.5～6.0.The pretreated distiller's grain is mixed with the liquid culture with JZ－1 and JZ－2 and then fermented for 22～24 h.The prepared single cell protein feedstuff contains approximately 33% of crude protein,less than 14% of crude fiber and amino acids of different kinds.