Temperature and salinity effects on growth and fatty acid composition of a halophilic diatom, Amphora sp. MUR258 (Bacillariophyceae)

Indrayani, Indrayani and Moheimani, Navid and de Boer, Karne and Bahri, Parisa A and Borowitzka, Michael (2020) Temperature and salinity effects on growth and fatty acid composition of a halophilic diatom, Amphora sp. MUR258 (Bacillariophyceae). Journal of Applied Phycology, 32 (2). pp. 977-987. ISSN 1573-5176 (online); 0921-8971 (print)

	Text (Article-Temperatur and salinity effects on growth and fatty acid composition ofa halophilic diatom, Amphora sp.MUR258 (The published version of the paper can be found at https://link.springer.com/article/10.1007/s10811-020-02053-z) eprint-Temperature and salinity-JAPH 2020.pdf - Accepted Version Download (1MB)
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	Text (Correspondence-Temperature and salinity effects on growth and fatty acid composition of a halophilic diatom, Amphora sp.MUR258) Correspondence-Temperature and salinity (JAPH 2020).pdf Download (1MB)

Abstract

Diatoms are of great interest for large-scale cultivation due to their high lipid content. The ability to grow over a wide range of salinities is also of great advantage.We studied the effect of temperature and salinity on the growth, lipids and fatty acid profiles of a newly isolated halophilic diatom Amphora sp. MUR 258. Amphora sp. MUR 258 is unusual in that it grows over a wide range of temperatures (24–35 °C) and salinities (7–12% (w/v) NaCl). The highest specific growth rate (SGR; 0.607 ±0.017 day−1) was achieved at 7% NaCl at 35 °C, and the lowest SGR (0.433 ± 0.087 day−1) was obtained at 9% NaCl at 25 °C. The cells contained more lipids in the exponential phase, except when grown at 12% NaCl where the lipid content was higher in the stationary phase. The alga achieved its highest lipid content (57.69 ± 2.039% ash-free dry weight (AFDW) when grown at 7% NaCl at 25 °C and the lowest (34.43 ± 3.955% AFDW) obtained at 12% NaCl at 35 °C. The highest biomass productivity (0.171 ± 0.017 gAFDW L−1 day−1) and the lipid productivity (0.062 ± 0.017 gAFDW L−1 day−1) were achieved when the Amphora were grown at 9% NaCl at 35 °C and 7% at 25 °C, respectively. Irrespective of the growth conditions, the predominant fatty acids of Amphora sp. MUR 258 were palmitic acid (C16:0), stearic acid (C18:0), palmitoleic acid (C16:1) and oleic acid (C18:1), as well as low quantities of eicosapentaenoic acid (C20:5).

Item Type:	Article
Subjects:	FAKULTAS TEKNIK FAKULTAS TEKNIK > Pendidikan Teknologi Pertanian
Divisions:	FAKULTAS TEKNIK
Depositing User:	Dr. Indrayani Indrayani
Date Deposited:	20 Jun 2023 11:59
Last Modified:	20 Jun 2023 11:59
URI:	http://eprints.unm.ac.id/id/eprint/30639

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• Temperature and salinity effects on growth and fatty acid composition of a halophilic diatom, Amphora sp. MUR258 (Bacillariophyceae). (deposited 20 Jun 2023 11:59) [Currently Displayed]

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