Abstract
Attempts to adapt the laboratory experience of bi-phasic growth and carotenogenesis in Dunaliella to large-scale conditions were highly successful. Algae were initially cultivated in stage one for optimizing biomass production of cells containing a low β-carotene to chlorophyll ratio. The culture was then transferred to stage two, diluted to about one third and induced for carotenogenesis. The bi-phase cultivation increased β- carotene productivity to 450 mg m-2 d-1 in stage one and to 300 mg m-2 d-1 in stage two, compared to the relatively low productivity of below 200 mg β- carotene m-2 d-1, in the conventional one phase type of cultivation. The results indicate that a selected algal product can be promoted specifically by growth manipulation of the alga and its environment.
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Ben-Amotz, A. New mode of Dunaliella biotechnology: two-phase growth for β-carotene production. J Appl Phycol 7, 65–68 (1995). https://doi.org/10.1007/BF00003552
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DOI: https://doi.org/10.1007/BF00003552