[Influence of composition of the nutrient medium on growth and development of entomopathogenic bacteria Bacillus thuringiensis].

New medium for cultivation of Bacillus thuringiensis has been elaborated with the help of a simplex method for mathematical planning the experiment. The optimized medium containing green syrup, corn extract, sodium humate and mineral salts, allowed to increase the biomass titer by 45%, endotoxin by 220% as compared to the initial medium. Insecticide activity of Bacillus thuringiensis culture grown on the new culture medium exceeds considerably that on the initial culture medium.