EN
The enzymatic systems of some microbes can decompose macromolecular organic compounds into simple substances harmless to the natural environment. Some microorganisms used in biodegradation processes obtain their effective capacity after pre-adaptation. This paper compares the biological activity of Bacillus subtilis and Aerobacter areogenes museum bacteria strains to the activity of autochthonous microflora isolated from waste products of a fat preparation plant. As hypothesized, the experimental values show that the activity of autochthonous microflora was significantly greater than the activity of the museum bacteria strains.