Abstract
Over half of anthropogenic carbon emissions are captured and reused in the carbon cycle, with up to 30% occurring with the participation of cyanobacteria. Cyanobacteria of the genus Arthrospira are currently one of the most widely cultivated phototrophic microorganisms on an industrial scale due to their high protein content as well as high-added value bioactive compounds. The influence of inoculum age on the cyanobacterium Arthrospira platensis B-12619 (Russian National Collection of Industrial Microorganisms) growth during cultivation in Erlenmeyer flasks on nutrient media of different compositions is studied. The dependence of the biomass productivity on the inoculum age is established, regardless of the nutrient-medium composition. The maximum C-phycocyanin yield of at least 300 mg/L is achieved using a 4 days inoculum.
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