title: Alterations of the lipid content and fatty acid profile of Chlorella protothecoides under different light intensities.
abstract: Chlorella protothecoides is a valuable source of lipids that may be used for biodiesel production. The present work shows analysis of the potential of photoheterotrophic cultivation of C. protothecoides under various light intensities aiming to identify the conditions with maximal biomass and lipid content. An increase in light intensity was associated with an increased specific growth rate and a shortened doubling time. Also, the relative total lipid content increased from 24.8% to 37.5% with increase of light intensity. The composition of fatty acid methyl esters was affected by light intensity with the C16-18 fatty acids increased from 76.97% to 90.24% of total fatty acids. However, the content of linolenic acids decreased with the increase of the culture irradiance. These studies indicate that cultures irradiated with high light intensities achieve the minimal specifications for biodiesel quality on linolenic acids and thus are suitable for biodiesel production.
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland. Electronic address: i.krzeminska@ipan.lublin.pl.
authors.forename: Izabela
authors.initials: I
authors.lastname: Krzemińska
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland.
authors.forename: Agata
authors.initials: A
authors.lastname: Piasecka
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland.
authors.forename: Artur
authors.initials: A
authors.lastname: Nosalewicz
authors.affiliation: Dipartimento di Biologia, Università di Padova, Via U. Bassi 58b, 35121 Padova, Italy.
authors.forename: Diana
authors.initials: D
authors.lastname: Simionato
authors.affiliation: Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland.
authors.forename: Jacek
authors.initials: J
authors.lastname: Wawrzykowski
mesh_terms: D056804:Biofuels / Q000382:microbiology; D018533:Biomass; D002708:Chlorella / Q000254:growth & development / Q000378:metabolism* / Q000528:radiation effects*; D005227:Fatty Acids / Q000032:analysis*; D008027:Light; D010788:Photosynthesis / Q000528:radiation effects; D045332:Photosystem II Protein Complex / Q000378:metabolism
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D045332:Photosystem II Protein Complex
keywords: Chlorella protothecoides; Fatty acid; Light intensity; Lipids; Microalgae