Studies of Soybean Peptides by Solid-State Fermentation with Multi-Strains

In this paper, the condition of aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides was studied. The results indicated that the best fermentation condition of the aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides is that: the initial pH of the culture medium is 8.0, the proportion of mixture strains (aspergillus niger vs bacillus subtilis) is 2 to 1,the fermentation temperature is 30°C and the fermentation time is 80 hours. In this condition the degree of hydrolysis of the fermentation bean pulp is 36.5%.