The protein content in the biomass of unialgal and mixed cultures of some green and blue-green algae was investigated. It was revealed that in mixed cultures the content of proteins sufficiently differed from the expected indices. Depending on peculiarities of the growth, the quantity of endogenous proteins in mixed cultures may be increased (more than 50%) or decreased (40-240%) compared to average indices of protein content in monocultures.

Keywords: unialgal, cultures, mixed cultures, quantity of endogenous proteins

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