Assessment of carotenoid production by Dunaliella salina in different culture systems and operation regimes

The effect of operation regime and culture system on carotenoid productivity by the halotolerant alga Dunaliella salina has been analyzed. Operation strategies tested included batch and semi continuous regime, as well as a two-stage approach run simultaneously in both, open tanks and closed reactor....

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Bibliographic Details
Published in:Journal of biotechnology 2011-01, Vol.151 (2), p.180-185
Main Authors: Prieto, Ana, Pedro Cañavate, J., García-González, Mercedes
Format: Article
Language:English
Subjects:
beta Carotene - chemistry
Biological and medical sciences
Bioreactors
Biotechnology
Biotechnology - methods
Carotenoids
Carotenoids - chemistry
Carotenoids - metabolism
Chlorophyta - metabolism
Culture
Culture Media - metabolism
Drying
Dunaliella salina
Fundamental and applied biological sciences. Psychology
Isomerism
Isomers
Light
Lutein - chemistry
Methods. Procedures. Technologies
Microalgae
Outdoor culture
Photobioreactor
Photobioreactors
Photochemistry - methods
Protein Isoforms
Strategy
Tanks
Temperature
Various methods and equipments
β-Carotene
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Summary:The effect of operation regime and culture system on carotenoid productivity by the halotolerant alga Dunaliella salina has been analyzed. Operation strategies tested included batch and semi continuous regime, as well as a two-stage approach run simultaneously in both, open tanks and closed reactor. The best results were obtained with the closed tubular photobioreactor. The highest carotenoid production (328.8 mg carotenoid l −1 culture per month) was achieved with this culture system operated following the two-stage strategy. Also, closed tubular photobioreactor provided the highest carotenoid contents (10% of dry weight) in Dunaliella biomass and β-carotene abundance (90% of total carotenoids) as well as the highest 9-cis to all-trans β-carotene isomer ratio (1.5 at sunrise).
ISSN:0168-1656
1873-4863
DOI:10.1016/j.jbiotec.2010.11.011