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Effect of monochromatic illumination on lipid accumulation of Nannochloropsis gaditana under continuous cultivation.
- Source :
-
Bioresource technology [Bioresour Technol] 2014 May; Vol. 159, pp. 30-5. Date of Electronic Publication: 2014 Feb 15. - Publication Year :
- 2014
-
Abstract
- Although nitrogen starvation is frequently used to increase lipid contents in microalgae, it has a negative effect on cellular growth. Since light supply is essential for photosynthetic organisms, the effects of cultivation under monochromatic illumination on the growth and lipid contents of Nannochloropsis gaditana were assessed. Continuous cultivation under blue and red light conditions improved the productivity and physical properties for biodiesel from this microalga. FAME yield was twofold higher under red light than under normal white light (21.12% vs 11.35%), with no significant difference in growth rates. Blue and red light increased photosynthetic oxygen evolution, carbon fixation and nutrient uptake. In total, more significant physiological changes were observed under red than under blue light. These results show that red light illumination may be useful for enhancing lipid production by N. gaditana, with the increased photosynthetic reducing equivalents induced by red light which could be deposited as lipids and carbohydrates.<br /> (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Subjects :
- Algal Proteins metabolism
Biofuels
Biomass
Carbohydrate Metabolism radiation effects
Carbon Cycle radiation effects
Carbon Dioxide metabolism
Esters metabolism
Fatty Acids metabolism
Nitrates metabolism
Photobioreactors
Photosynthesis radiation effects
Pigments, Biological metabolism
Stramenopiles cytology
Cell Culture Techniques methods
Light
Lipid Metabolism radiation effects
Stramenopiles growth & development
Stramenopiles radiation effects
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 159
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 24632438
- Full Text :
- https://doi.org/10.1016/j.biortech.2014.02.024