Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production
Dehiba, B., Bey, B., El-Amine, A. (2023). Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production. EKB Journal Management System, 15(1), 177-184. doi: 10.21608/eajbsc.2023.288621
Benzidane Dehiba; Baba Hamed Mohamed Bey; Abi-ayad Sidi-Mohammed El-Amine. "Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production". EKB Journal Management System, 15, 1, 2023, 177-184. doi: 10.21608/eajbsc.2023.288621
Dehiba, B., Bey, B., El-Amine, A. (2023). 'Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production', EKB Journal Management System, 15(1), pp. 177-184. doi: 10.21608/eajbsc.2023.288621
Dehiba, B., Bey, B., El-Amine, A. Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production. EKB Journal Management System, 2023; 15(1): 177-184. doi: 10.21608/eajbsc.2023.288621

Strategy for Nannochloropsis gaditana Culture Combining High Productivity and Lipid Content For Biofuel Production

Egyptian Academic Journal of Biological Sciences. C, Physiology and Molecular Biology
Volume 15, Issue 1, June 2023, Page 177-184  XML PDF (553.13 K)
Document Type: Original Article
DOI: 10.21608/eajbsc.2023.288621
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Authors
Benzidane Dehiba1; Baba Hamed Mohamed Bey2; Abi-ayad Sidi-Mohammed El-Amine2
1Department of Marin and Aquaculture Science, University of ABDELHAMID IBN BADIS, Mostaganem 27000, Algeria. - Laboratory of Aquaculture and Bioremediation (AQUABIOR), Department of Biotechnology, Campus IGMO, University of Oran1 AHMED BENBELLA, Oran 31000, Algeria.
2Laboratory of Aquaculture and Bioremediation (AQUABIOR), Department of Biotechnology, Campus IGMO, University of Oran1 AHMED BENBELLA, Oran 31000, Algeria.
Abstract
The aim of this work is to investigate the effects of the variation in the culture parameters on the production of lipids. We first determined the best conditions to promote biomass productivity. Then, we set up a culture system in two steps: the first step is to promote the growth of the algal biomass, via the use of a culture medium enriched in nutrients, in order to have a high concentration in the cell; and the second step consisting in stimulating the production of lipids, by inducing stress to the algal cells, via the substitution of essential nutrients.
                Experimental results have shown that favouring growth kinetics is to the detriment of oil content. Indeed, a deficiency in essential nutrients (nitrogen and/or phosphorus) inhibits growth but favours lipid production. Lipid content tripled (51.33% dry weight) in N. gaditana grown in the total absence of nutrients (0 g/L nitrogen and phosphorus) compared to controls (12 g/L nitrogen and 5 g/L phosphorus). Nitrogen and phosphorus deficiency stimulates lipid accumulation but leads to a reduction in growth rate, which ultimately impairs lipid productivity. For better lipid productivity, a compromise must be found between growth and cellular lipid accumulation.
Keywords
Microalgae; biodiesel; biomass; nitrogen; phosphorus
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