ВЛИЯНИЕ БАКТЕРИАЛЬНОЙ ЦЕЛЛЮЛОЗЫ НА ПРОДУКТИВНОСТЬ MEDUSOMYCES GISEVII

Abstract

Using an artificially created model system, we have studied the role of bacterial cellulose in the activity of the symbiotic community of microorganisms Medusomyces gisevii. It was shown that during the cultivation of Medusomyces gisevii in all variants, in the presence and absence of bacterial cellulose (BC) in the culture medium, there was a decrease in pH and an increase in electrical conductivity values, the change of which was influenced by the nature of the nutrient medium extracts. The values of correlation coefficients in all variants were high and varied from -0.88 to -0.99. In the presence of BC there was a sharp decrease in pH and, accordingly, an increase in the electrical conductivity of the culture medium. The presence of BC contributed to the activation of the symbiotic community of microorganisms and manifested itself in a significant decrease in pH values by 22.0-24.3% and the increase in electrical conductivity by 106-169%. This effect is due to the fact that the presence of BC on the surface of the culture fluid promotes immobilization of microorganisms in the structure of the gel film, which ensures their availability to the nutrient substrate and the possibility of its further sequential conversion to acetic acid. The data obtained indicate that for the normal functioning of Medusomyces gisevii, bacterial cellulose is extremely necessary, which can serve as a consolidating matrix serving as a place of joint metabolic activity of various types of micro-organisms.