[Synthetic medium for cultivating Bacillus thuringiensis]

Bacillus thuringiensis subsp. galleriae 69/6 was cultivated in a synthetic medium containing 5 amino acids and nicotinic acid. The dynamics of the culture growth and amino acid assimilation were studied in this medium and in a medium containing yeast extract. The phase of spore germination increased, the yield decreased and the maximal growth rate became higher when the culture grew in the synthetic medium. The percentage of thermoresistant spores was slightly lower in the synthetic medium comparing to the medium with yeast extract.