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Effect of light intensity on physiological changes, carbon allocation and neutral lipid accumulation in oleaginous microalgae.
- Source :
-
Bioresource Technology . Sep2015, Vol. 191, p219-228. 10p. - Publication Year :
- 2015
-
Abstract
- Chlorella sp. and Monoraphidium sp. were the potential microalgal species for lipid production. This study aimed to investigate different light intensities (40, 200, 400 μmol photon m −2 s −1 ) on physiological changes, photosynthetic carbon partitioning and neutral lipid accumulation in both microalgae. Results suggested that under high light (HL, 400 μmol photon m −2 s −1 ), chlorophyll degraded, protein and carbohydrate content decreased; more carbon allocated into lipid as well as most of intracellular space was occupied by lipid bodies. Moreover, with the lipid accumulation, Fv/Fm decreased and ROS scavenging enzyme increased. Membrane lipid reduced dramatic (29.73–37.97%) to format NL (71.66% of total lipid in Chlorella sp. L1 and 60.65% in Monoraphidium dybowskii Y2). The NL productivity under HL (51.36 and 49.71 mg L −1 d −1 ) were more than 3 times of those under LL. Additionally, FAME profiles proved that the useful fatty acid components for biodiesel production were enhanced under HL. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MEMBRANE lipids
*MICROALGAE
*LIGHT intensity
*PHOTOSYNTHESIS
*CHLOROPHYLL
*CHLORELLA
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 191
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 108382546
- Full Text :
- https://doi.org/10.1016/j.biortech.2015.05.021