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| Screening Oleaginous Microalgae and Evaluation of the Oil-producing Charateristic |
| LI Tao1, LI Ai-fen1, SANG Min1, WU Hong2, YIN Shun-ji2, ZHANG Cheng-wu1 |
1. Institute of Hydrobiology, Jinan University, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering,Ministry of Education, Guangzhou 510632,China;
2. State Key Laboratory of Coal-Based Low-Carbon Energy, Xinao Scientific & Technological Developmental Co. Ltd., Langfang 065001,China |
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Abstract Twenty strains of freshwater and marine microalgae collected in our laboratory which belong to Chlorophytes, Eustigmatophytes and Bacillariophytes were screened for their potential of oil production. All microalgae were cultured in batch, with bubble column photobioreactor (light path, 3 cm). These microalgae were evaluated by measuring dry weight, total lipid content, total lipid yield, total lipid volumetric productivity. The results showed that the dry weight and total lipid contents of twenty microalgae were in the range of 1.81~7.88g/L and 16.0%~55.9% dw, respectively, and nine of them were referred as oleaginous microalgae, including Scenedesmus sp.(6.34g/L, 55.9% dw), Chlorococcum tatrense(5.93g/L, 46.9% dw), Nannochloropsis oculata(7.88g/L, 35.0% dw), Chlorococcum oleofaciens(5.58g/L, 45.9% dw), Pseudochlorococcum polymorphum (6.10g/L, 40.0% dw), Chlamydomonas augustae(5.78g/L, 40.5% dw), Chlorella ellipsoidea(5.56g/L, 40.7% dw), Chlorococcum ellipsoideum(5.41g/L, 38.0% dw), Chlorococcum nivale(5.55g/L, 36.3% dw). It was concluded that the most potential for industrial application was Scenedesmus sp, which lipid yield and lipid volumetric productivity was 3.5g/L and 218.7mg/L·d, respectively.
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Received: 08 October 2010
Published: 26 April 2011
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