Year: 2012
Type: article
Abstract: The capacity of Parietochloris incisa to grow under mixotrophic and heterotrophic conditions was investigated.Glucose, glycerol, sodium acetate, citric acid and lactic acid at 0.005M concentration were used as organic carbon substrates.Results of this study clearly demonstrate the ability of this microalga to utilize glucose as carbon source for its growth.Glycerol seemed to support growth under mixotrophic condition but not in heterotrophic growth regime.Growth was not observed with sodium acetate, citric acid and lactic acid.Under specifi c culture conditions, glucose was shown to increase biomass productivity by 7.8, 15.5 and 6.8 folds higher than photoautotrophic control under mixotrophy without and with supplementation and heterotrophy, respectively.Outdoor mixotrophic cultivation did not yield higher biomass productivity; however, the proportion of arachidonic acid in total fatty acid increased signifi cantly resulting in a higher arachidonic acid volumetric yield.These results open new horizon for the development of P. incisa mass cultivation technology for arachidonic acid production employing mixotrophic and heterotrophic cultivation.
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2101237459