Processing Technology of Biologic Peptide from Soybean Meal

In this paper,the production method of using bacterium fermenting soybean meal through selecting strain,optimizing the condition in the spinner flask was studied.Taking the content of α-N in the Fermentation Broth as an index,the Aspergillus niger,Aspergillus oryzae and Bacillus subtilis was selected and the Bacillus subtilis was the optimum strain.The processing technology of the biologic peptide of soybean meal was determined as follows:seed inoculation time 16 h,granularity of the soybean meal 40 holes,pH 6.8,glucose 2%,soybean meal 11%,inoculation amount 6%,fermentation time 48h.Under the optimum technological conditions,the ratio of the peptides from the soybean protein was 41.18%.