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Title | Increasing γ-linolenic acid content in Spirulina platensis using fatty acid supplement and light-dark illumination |
Authors | E K Kim; G G Choi; Hee-Sik Kim; Chi-Yong Ahn; Hee-Mock Oh |
Publisher | Springer Verlag (Germany) |
Issue Date | 2012 |
Citation | Journal of Applied Phycology, vol. 24, no. 4, pp. 743-750 |
Keywords | γ-Linolenic acid (GLA); Fatty acids; Mixotroph; Spirulina platensis; Two-stage culture -------------------------------------------------------------------------------- |
Abstract | Spirulina platensis, a filamentous cyanobacterium, produces γ-linolenic acid (GLA, 18:3), which is an important anti-inflammatory for pharmaceutical use. Thus, to increase the GLA content in S. platensis, this study investigated the combined effect of a light-dark (LD) two-stage culture and mixotrophic culture including a precursor of GLA. When compared with a photoautotrophic culture, the supplement of a GLA precursor, such as a long- or short-chain carbon source, enhanced the total fatty acid and GLA contents in the cells in the two-stage culture. The highest GLA content of 2% (w/w) and productivity of 27. 6 ± 4. 7 mg L -1 were obtained in S. platensis when using 0. 01 mM palmitic acid as a supplement in the two-stage culture. This study also suggests that a mixotrophic and LD two-stage culture may represent a method for increasing the total lipid production, which can then be converted to biofuels. |
ISSN | 0921-8971 |
Link | |
Appears in Collections | |
Registered Date |
2017-04-19 |
