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Far-Red Light Acclimation for Improved Mass Cultivation of Cyanobacteria / Alla Silkina, Bethan Kultschar, Carole Llewellyn

Metabolites, Volume: 9, Issue: 8, Start page: 170

Swansea University Authors: Alla Silkina, Carole Llewellyn

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DOI (Published version): 10.3390/metabo9080170

Abstract

Improving mass cultivation of cyanobacteria is a goal for industrial biotechnology. In this study, the mass cultivation of the thermophilic cyanobacterium Chlorogloeopsis fritschii was assessed for biomass production under light-emitting diode white light (LEDWL), far-red light (FRL), and combined w...

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Published in: Metabolites
ISSN: 2218-1989
Published: MDPI AG 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51484
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Abstract: Improving mass cultivation of cyanobacteria is a goal for industrial biotechnology. In this study, the mass cultivation of the thermophilic cyanobacterium Chlorogloeopsis fritschii was assessed for biomass production under light-emitting diode white light (LEDWL), far-red light (FRL), and combined white light and far-red light (WLFRL) adaptation. The induction of chl f was confirmed at 24 h after the transfer of culture from LEDWL to FRL. Using combined light (WLFRL), chl f, a, and d, maintained the same level of concentration in comparison to FRL conditions. However, phycocyanin and xanthophylls (echinone, caloxanthin, myxoxanthin, nostoxanthin) concentration increased 2.7–4.7 times compared to LEDWL conditions. The productivity of culture was double under WLFRL compared with LEDWL conditions. No significant changes in lipid, protein, and carbohydrate concentrations were found in the two different light conditions. The results are important for informing on optimum biomass cultivation of this species for biomass production and bioactive product development.
Keywords: cyanobacteria; chromatic adaptation; LED; far-red light; growth; photosynthesis; mass cultivation; pigments; Chlorogloeopsis
College: College of Science
Issue: 8
Start Page: 170