Optimization of Fermentation Technical Parameters for Bio-additive of Crop Straws Fermentation

The effects of culture component,temperature,pH and dissolved oxygen on the growth of bio-additive of crop straws fermentation were studied by single factor test and the fermentation parameters of the mix strains were optimized.The results got from 5 L fermentation tank tests showed that the optimal culture conditions were compound culture,30℃,pH 5.0,300 r/min,air flow 4 L/min and fermentation periods 24-27 h,and the maximal concentrations of live microzyme and lactobacillus were 2.00×108,2.55×109 individuals/mL in the fermentation liquid,respectively.