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Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus
- Source :
- Bioresource Technology, 143, 1-9, Bioresource Technology 143 (2013)
- Publication Year :
- 2013
-
Abstract
- Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 °C.
- Subjects :
- Bio Process Engineering
Environmental Engineering
Light
neochloris-oleoabundans
Nitrogen
growth
chemistry.chemical_element
Bioengineering
biodiesel
Photosynthesis
Dry weight
Bioenergy
Botany
fatty-acid-composition
Food science
Waste Management and Disposal
Triglycerides
VLAG
Biodiesel
photosynthesis
biology
Renewable Energy, Sustainability and the Environment
microalgae
Temperature
General Medicine
Hydrogen-Ion Concentration
Neochloris oleoabundans
biology.organism_classification
cultures
Culture Media
Light intensity
chemistry
Yield (chemistry)
nannochloropsis sp
Scenedesmus
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 143
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....4adbedf68f7eaa887991e2300ad10759