Impact of light quality on biomass production and fatty acid content in the microalga Chlorella vulgaris.
In this study, the green microalga Chlorella vulgaris was exposed to monochromatic light at six different wavelengths in order to study the effect on biomass productivity and fatty acid content. A significantly higher amount of biomass by produced in the treatments with yellow, red and white light compared with blue, green and purple light. There were also significant differences in total lipid content and fatty acid profile between the treatments. The green light regime gave the lowest concentration of lipids, but increased the concentration of polyunsaturated fatty acids. Thus it can be concluded that light quality significantly affects biomass productivity, total lipid concentration and fatty acid profile in the microalga C. vulgaris.
Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp, Sweden. Electronic address: Malin.Hultberg@slu.se.
Malin
M
Hultberg
Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Helene Larsson
HL
Jönsson
Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Karl-Johan
KJ
Bergstrand
Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Anders S
AS
Carlsson
D018533:Biomass; D048408:Chlorella vulgaris / Q000254:growth & development* / Q000378:metabolism / Q000528:radiation effects*; D005227:Fatty Acids / Q000378:metabolism*; D008027:Light; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism / Q000528:radiation effects*
D005227:Fatty Acids
FAME; Light Emitting Diode; Microalgae; Wavelength