[Characteristics of hydrolase biosynthesis in Bacillus mesentericus grown on various media].

The dynamics of the consumption of major carbon and nitrogen sources and the biosynthesis of hydrolytic enzymes were studied in Bacillus mesentericus grown on semisynthetic media. Conditions were chosen that provide the obtaining of the culture liquid with predominantly proteolytic or amylolytic activity. The replacement of maltose with native starch resulted in more intensive accumulation of the biomass and hydrolytic enzymes, and in more rapid (by 3-5 hr) transformation from the logarithmic to the stationary growth phase.

[Use of starch-containing media for cultivation of Bacillus mesentericus].

When cultivating Bacillus mesentericus to produce proteinases it is advisable to use more available and cheap carbon sources--native maize meal or potato starch--instead of maltose; the products of their complete hydrolysis inhibit the biosynthesis of enzymes.