The production of biomass and phycobiliprotein pigments in filamentous cyanobacteria: the impact of light and carbon sources

Cyanobacteria are recognized as producers of bioactive substances and phycobiliproteins, whose medicinal and functional food properties have led to increased interest in recent years. In the present study, the biomass production and phycobiliprotein content in cyanobacterial strains belonging to Ana...

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Bibliographic Details
Published in:Applied biochemistry and microbiology 2017-09, Vol.53 (5), p.539-545
Main Authors: Kovač, D., Babić, O., Milovanović, I., Mišan, A., Simeunović, J.
Format: Article
Language:English
Subjects:
Anabaena
Biochemistry
Biocompatibility
Biomass
Biomedical and Life Sciences
Carbon sources
Cell culture
Cyanobacteria
Food
Functional foods & nutraceuticals
Glycerol
Life Sciences
Light emitting diodes
Medical Microbiology
Microbiology
Nitrogen fixation
Nostoc
Nutrition
Organic carbon
Phycobiliproteins
Phycocyanin
Pigments
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Summary:Cyanobacteria are recognized as producers of bioactive substances and phycobiliproteins, whose medicinal and functional food properties have led to increased interest in recent years. In the present study, the biomass production and phycobiliprotein content in cyanobacterial strains belonging to Anabaena , Nostoc and Spirulina genera were investigated under the conditions of continuous illumination and mixotrophic nutrition. The results showed that biomass production was strongly stimulated by continuous light in Spirulina strains (4.5-fold), and by organic carbon sources in N 2 -fixing strains (2.1–2.8-fold). The strategy of cells to accumulate primarily blue pigment phycocyanin and bluish green allophycocyanin was revealed under tested conditions. Furthermore, in the case of Spirulina S1 grown with glycerol, the culture medium became dense and changed its colour to pink, which may indicate the release of compounds including pigment(s) outside the cell, the phenomenon that seem to be rare among cyanobacteria. Moreover, under continuous light, in this strain the highest biomass level of 4.0 mg/mL was achieved, wherein phycocyanin and allophycocyanin content was increased 12- and 16-fold, respectively, which indicates the high potential of this strain for further investigation.
ISSN:0003-6838
1608-3024
DOI:10.1134/S000368381705009X