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Microbial biosynthesis and making of pigment melanin.

The efficient strain and the technology of biosynthesis and extraction process from a biomass received in process cultivation of new yeast strain Saccharomyces neoformans var. nigricans are developed. The influence of a carbon substrates (glucose, spirit, milk whey) and conditions of fermentation process on an output and chromatically received melanin are investigated. It is is established, that for the given strain the fermentation time makes 36-40 hours.