title: [Dissolved oxygen content in microbiological nutrient media].
abstract: The modification of a highly sensitive method for the determination of the concentration of dissolved oxygen in liquid culture media and in water is described. This modification permits the easy conversion of the relative readings of electrode membrane transducers for measuring the partial pressure of oxygen into the readings characterizing the absolute concentration of oxygen in the medium (mg/cu. dm). The content of dissolved oxygen in microbiological media and in water depends on the amount of dissolved mineral salts, amino acids and peptides (the products in incomplete proteolysis), as well as on temperature. The maximum level of oxygen saturation in liquid culture media at 37 degrees C is different for various types of media and constitutes their peculiar characteristic, determined in the process of aeration under experimental conditions.
mesh_terms: D000332:Aerobiosis; D055598:Chemical Phenomena; D002621:Chemistry; D003470:Culture Media / Q000032:analysis*; D005285:Fermentation; D008722:Methods; D010100:Oxygen / Q000032:analysis*; D012995:Solubility; D013696:Temperature; D014867:Water / Q000032:analysis
chemical_list: D003470:Culture Media; D014867:Water; D010100:Oxygen
vernacular_title: Soderzhanie rastvorennogo kisloroda v mikrobiologicheskikh pitatel'nykh sredakh.