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Mixotrophic continuous flow cultivation of Chlorella protothecoides for lipids.
- Source :
-
Bioresource Technology . Sep2013, Vol. 144, p608-614. 7p. - Publication Year :
- 2013
-
Abstract
- The oleaginous alga Chlorella protothecoides accumulates lipid in its biomass when grown in nitrogen-restricted conditions. To assess the relationship between nitrogen provision and lipid accumulation and to determine the contribution of photosynthesis in mixotrophic growth, C. protothecoides was grown in mixo- and heterotrophic nitrogen-limited continuous flow cultures. Lipid content increased with decreasing C/N, while biomass yield on glucose was not affected. Continuous production of high lipid levels (57% of biomass) was possible at high C/N (87–94). However, the lipid production rate (2.48 g L −1 d −1 ) was higher at D = 0.84 d −1 with C/N 37 than at D = 0.44 d −1 and C/N 87 even though the lipid content of the biomass was lower (38%). Photosynthesis contributed to biomass and lipid production in mixotrophic conditions, resulting in 13–38% reduction in CO 2 production compared with heterotrophic cultures, demonstrating that photo- and heterotrophic growth occurred simultaneously in the same population. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FLUID flow
*CHLORELLA
*LIPIDS
*BIOMASS
*PHOTOSYNTHESIS
*ALGAE culture
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 144
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 98143320
- Full Text :
- https://doi.org/10.1016/j.biortech.2013.07.027