Journal
BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT
Volume 29, Issue 3, Pages 506-513Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13102818.2015.1013988
Keywords
biomass; oil content; microalgae; glycerol; mixotrophic
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Funding
- Basic Science Research Program through National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2013006899]
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The growth of the algae Chlorella vulgaris, Botryococcus braunii and Scenedesmus sp. under mixotrophic conditions in the presence of different concentrations of crude glycerol was evaluated with the objective of increasing the biomass growth and algal oil content. A high biomass concentration was characteristic of these strains when grown on crude glycerol compared to autotrophic growth, and 5 g/L glycerol yielded the highest biomass concentration for these strains. Mixotrophic conditions improved both the growth of the microalgae and the accumulation of triacylglycerols (TAGs). The maximum amount of TAGs in the algae biomass was obtained in the 5 g/L glycerol growth medium. The fatty acid profiles of the oil for the cultures met the necessary requirements and the strains are promising resources for biofuel production.
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