| Abstract: | Growth parameters (temperature and pH) were determined for collection cultures of aerobic heterotrophic bacteria. Analysis of the experimental data with the use of the Rosso model made it possible to calculate the extreme values of temperature and pH permissive for culture growth. The cultures examined were subdivided into three groups with respect to their growth temperature and pH. The first group is represented by cultures with minimum, maximum, and optimal growth temperatures of <20, 60–64, and 38–40°C, respectively, and with the optimal growth pH 8.0–8.5. Bacteria of the second group are true alkalithermophilic organisms with a temperature optimum of 45–50°C and a pH optimum of 8.5–9.0. The third group includes a culture of a thermophilic alkalitolerant bacterium. |
