ISSN (print) 0868-8540, (online) 2413-5984
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Algologia 2020, 30(2): 148–159
Physiology, Biochemistry, Biophysics

Biochemical characteristics of Spirulina platensis biomass obtained by different modes of cultivation

Olkhovych О.О., Taran N.Yu., Karaushu O.V., Panyuta O.O.

A comparative assessment of the biochemical composition of Spirulina (Nordst.) Geitler, platensis was made. Biomass was obtained from a natural reservoir and grown artificially in opened ponds and a closed-type photobioreactor. It was found that the total protein content was lower in all samples of artificially grown algae, compare to the natural sample. And it was observed the decrease in number of individual amino acids (serine five times, histidine three times, aspartic acid and proline twice). The amount of essential amino acids (methionine, valine and leucine) differed significantly. Phycocyanin was higher in biomass samples from natural reservoirs and photobioreactors, either phycoerythrin and alloficocyanin were higher in biomass samples that were grown in opened ponds. The biomass of Spirulina platensis, that was grown in the photobioreactor, had a higher content of chlorophyll A and carotenoids than all other samples, probably due to more intense artificial illumination compare to the natural one. The significant differences were found in the biochemical composition of Spirulina platensis biomass. It indicates the importance of careful selection of growing conditions for the biomass production for the industrial use.

Keywords: Spirulina platensis (Nordst.) Geitler, algae biotechnology, amino acids, protein, phycocyanin, allophicocyanin, phycoerythrin, chlorophyll а, carotenoids

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