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

The production of biomass and phycobiliprotein pigments in filamentous cyanobacteria: the impact... 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 N2-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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Biochemistry and Microbiology Springer Journals

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

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Pleiades Publishing, Inc.
Subject
Life Sciences; Biochemistry, general; Microbiology; Medical Microbiology
ISSN
0003-6838
eISSN
1608-3024
DOI
10.1134/S000368381705009X
Publisher site
See Article on Publisher Site

Abstract

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 N2-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.

Journal

Applied Biochemistry and MicrobiologySpringer Journals

Published: Sep 14, 2017

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