[Express methods of determining the biochemical properties of pathogenic microorganisms]

Comparative studies were carried out to evaluate some express methods for determining the biochemical properties of microorganisms. Described are disc methods establishing the production of indol and H2S, the breakdown of urea, and the reduction of nitrates and nitrites, with which the time of investigation is shortened severalfold. The results obtained are clear and well defined, and fully agree with the results obtained by methods described in the Bulgarian State Standards. It is suggested to apply these methods in the wide laboratory practice.