油茶籽粕固态发酵生产菌体蛋白饲料的研究

Study on producing bacterial protein feedstuff from camellia seed cake by solid state fermentation

以油茶籽粕为原料,选用热带假丝酵母∶枯草芽孢杆菌∶黑曲霉=2∶1∶1为供试菌种,对油茶籽粕进行固态发酵生产菌体蛋白饲料。优化的固态发酵工艺条件为:尿素添加量6%,培养基含水量60%,发酵温度37℃,发酵时间4d。油茶籽粕经发酵后,粗蛋白质质量分数由16.96%上升到35.82%,粗纤维质量分数由20.12%下降到10.96%,营养价值得到提高。

The camellia seed cake was used as raw material to produce mycoprotein by solid state fermentation with a ration Candida tropicalis,Baeillus subtilis,Aspergillus niger of 2 ： 1 ： 1 as test microorganism. The optimum condition of solid state fermentation was： the amount of carbamide 6%, moisture content of culture medium at 60%, fermentation temperature at 37℃ , and fermentation time for 4 d. After fermentation, the protein content of camellia seed cake was increased from 16.96 to 35.82% and the fiber content was decreased from 20.12% to 10.96% thus the nutrition value of camellia seed cake was im proved.