期刊
JOURNAL OF APPLIED PHYCOLOGY
卷 25, 期 4, 页码 931-936出版社
SPRINGER
DOI: 10.1007/s10811-012-9917-y
关键词
Freshwater microalgae; Biomass productivity; Lipid productivity; Fatty acid productivity; Biodiesel
资金
- Arbeitsgemeinschaft industrieller Forschungsvereinigungen Otto von Guericke e. V. [KF2353701SB9]
- Egyptian Ministry of Higher Education and Scientific Research
- Deutscher Akademischer Austauschdienst in a German Egyptian Research Long-Term Scholarship program
Microalgae are considered as a promising feedstock for biomass production. The selection of the most suitable species is based on several key parameters such as lipid and fatty acid productivity. In the present study, the growth of different microalgae strains was examined in freshwater media for photoautotrophs suited for large-scale applications to identify the most suitable medium for each species. In the optimal medium, Scenedesmus obliquus showed the highest biomass productivity measured as increase of cell dry weight (0.25 g cellu dry weight (CDW) L-1 day(-1)), while Botryococcus braunii showed the highest lipid and total fatty acid content (430 and 270 mg g(-1) CDW, respectively) among the tested species. Regarding lipid and total fatty acid productivity, S. obliquus was the most lipid and total fatty acid productive strain with 41 and 18 mg L-1 day(-1) during the exponential phase, respectively. Additionally, the proportion of saturated and monounsaturated fatty acids increased with duration of the incubation in S. obliquus, while polyunsaturated fatty acids decreased. These results nominate S. obliquus as a promising microalga in order to serve as a feedstock for renewable energy production.
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