Abstract
An accompanying flora of the production strains always develops in each unprotected continuous fermentation process. In the process of production of fodder biomass from gas oil the high specific growth rate provides sufficient selection advantages to the production strain Lodderomyces elongisporus "D" EH 15 against substrate competitors. The accompanying flora uses products of metabolism and lysis as carbon and energy sources. The concentration of these compounds in the medium and consequently the development of the accompanying flora depends on the process conditions. During a period of more than ten years the taxonomic-diagnostic and technological properties of the production strain Lodderomyces elongisporus "D" EH 15 did not change, caused by the permanent selection stress in the continuous fermentation process.
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