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The aim of this study was to investigate how the synergistic protocols between nutrient and light affect the cell growth, lipid content and fatty acid profile of Cylindrotheca closterium. Furthermore, the flow hydrodynamics of a laboratory scale internal loop air‐lift photobioreactor were investigated for the cultivation of C. closterium.

Maximum lipid productivity of 7.364 mg L⁻¹ d⁻¹, which corresponded to the maximum biomass production of 0.356 g L⁻¹, was obtained in F/2 medium under light intensity of 56 μE m⁻² s⁻¹, highlighting the importance of high biomass accumulation for efficient lipid production. The most abundant saturated and monounsaturated fatty acids were pentadecanoic acid (C15:0) and palmitoleic acid (C16:1) which constituted 16–45% and 17–35% of total fatty acids for all growth conditions, respectively.

Palmitoleic acid was the dominant …