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Abstract
The physiological factors for microalgae cultivation are the preliminary steps to overcome the potential biomass demand. In this regard, the influence of light intensity (at six levels: 27, 40.5, 54, 67.5, 81 and 94.5 µmol m−2s−1) and pH conditions (5.0, 6.0, 7.0, 8.0 and 9.0) on the growth and lipid production of Scenedesmus species ADIITEC-II and GUBIOTJT116 was compared in the batch culture. Among the studied species, maximum specific growth (0.334 ± 0.002 day−1) and highest biomass yield (0.41 ± 0.021 g L−1) was achieved for Scenedesmus species ADIITEC-II at light intensity 81 µmol m−2s−1. Similarly, Scenedesmus species GUBIOTJT116 showed increased growth and biomass production at 81 µmol m−2s−1. However, illumination under 94.5 µmol m−2s−1 showed higher lipid production (0.533 ± 0.001 g L−1 and 0.551 ± 0.001 g L−1) for Scenedesmus sp. ADIITEC-II and GUBIOTJT116, respectively. The significant variation in effective pH tolerance, growth and biomass production was observed in the studied pH range. The result obtained in this study provides a potential insight of the strains and could be further explored to improve the biomass and lipid yield.
Disclosure statement
No potential conflict of interest was reported by the authors.