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• W4380201504 endingPage "103170" @default.
• W4380201504 startingPage "103170" @default.
• W4380201504 abstract "The feasibility of microalgal triacylglycerol (TAG) production for biodiesel remains constrained by high production costs under outdoor conditions. The aim of this study was to evaluate the capacity of an Argentinian strain of the diatom Halamphora coffeaeformis grown in outdoor raceway ponds to produce TAG suitable for biodiesel. The strain was cultured in seawater enriched with a biofertilizer during summer and spring in the semi-arid Pampa of Argentina. The following variables were analysed: 1) growth rate; 2) TAG accumulation; 3) lipid content and quality; 4) dissolved nutrient and physicochemical properties; and 5) climatic conditions. Intracellular TAG accumulation was evaluated with fluorometry by Nile Red. The growth rate and biomass productivity of the species were similar in the two seasons, with approximate values of 1.35 div. day−1 and 61.25 kg.ha−1.day−1, respectively. Total lipid content increased about 4-fold with respect to inocula in the 2 cultures, reaching up to 44.7 % ash free dry weight (AFDW) in summer and 36.4 % AFDW in spring. However, lipid accumulation differed between seasons: neutral lipid accumulation began at 8 days of cultivation in summer and at 19 days in spring. Salinity was the main stressor that accelerated the TAG accumulation in the species, the nutrient levels did not reach limiting values. In spring, precipitation decreased salinity levels, reducing stress and delaying the onset of TAG accumulation. The biodiesel properties inferred from the fatty acid profile of the species meet international standards and their quality ensures good performance in cold climates. Furthermore, the reported lipid productivity of the species (~25.6 kg.ha−1.day−1) is higher than that of the soybean oil used commercially for biodiesel. Based on the results obtained, H. coffeaeformis has potential for exploitation as a renewable source of TAG for biodiesel production in arid and semi-arid environments with access to brackish or marine water." @default.
• W4380201504 created "2023-06-11" @default.
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• W4380201504 date "2023-07-01" @default.
• W4380201504 modified "2023-10-13" @default.
• W4380201504 title "Outdoor culture of Halamphora coffeaeformis in the semi-arid Pampa of Argentina: A comprehensive analysis of triacylglycerol production for biodiesel" @default.
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• W4380201504 doi "https://doi.org/10.1016/j.algal.2023.103170" @default.
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