The effect of temperature on growth and lipid and fatty acid composition on marine microalgae used for biodiesel production

Cultivation temperature is one of the major factors affecting the growth and lipid accumulation of microalgae. In this study, the effects of temperature on the growth, lipid content, fatty acid composition and biodiesel properties of the marine microalgae Chaetoceros sp. FIKU035, Tetraselmis suecica...

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Bibliographic Details
Published in:	Journal of applied phycology Vol. 30; no. 1; pp. 37 - 45
Main Authors:	Chaisutyakorn, Panjaphol, Praiboon, Jantana, Kaewsuralikhit, Chatcharee
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Netherlands 01-02-2018 Springer Nature B.V
Subjects:	9th Asia Pacific Conference on Algal Biotechnology - Bangkok Algae Biodiesel fuels Biofuels Biomedical and Life Sciences Cetane number Chaetoceros Cultivation Diesel Ecology Fatty acid composition Fatty acids Freshwater & Marine Ecology Growth rate Kinematic viscosity Life Sciences Lipids Microalgae Nannochloropsis Plant Physiology Plant Sciences Polyunsaturated fatty acids Properties Species Temperature Temperature effects Viscosity Temperature Marine microalgae Biodiesel Fatty acid Lipid
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Summary:	Cultivation temperature is one of the major factors affecting the growth and lipid accumulation of microalgae. In this study, the effects of temperature on the growth, lipid content, fatty acid composition and biodiesel properties of the marine microalgae Chaetoceros sp. FIKU035, Tetraselmis suecica FIKU032 and Nannochloropsis sp. FIKU036 were investigated. These species were cultured at different temperatures (25, 30, 35 and 40 °C). The results showed that the specific growth rate, biomass and lipid content of all microalgae decreased with increasing temperature. With regards to fatty acids, the presence of saturated fatty acids (SFAs) in T. suecica FIKU032 and Nannochloropsis sp. FIKU036 decreased with increasing temperature, in contrast with polyunsaturated fatty acids (PUFAs). Moreover, Chaetoceros sp. FIKU035 was the only species that could grow at 40 °C. The highest lipid productivity was observed in Chaetoceros sp. FIKU035 when cultivated at 25 °C (66.73 ± 1.34 mg L −1 day −1 ) and 30 °C (61.35 ± 2.89 mg L −1 day −1 ). Moreover, the biodiesel properties (cetane number, cold filter plugging point, kinematic viscosity and density) of the lipids obtained from this species were in accordance with biodiesel standards. This study indicated that Chaetoceros sp. FIKU035 can be considered as a suitable species for biodiesel production in outdoor cultivation.
ISSN:	0921-8971 1573-5176
DOI:	10.1007/s10811-017-1186-3