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Cryptococcus terricola is a promising oleaginous yeast for biodiesel production from starch through consolidated bioprocessing

Starch is considered a potential feedstock for biofuel production, particularly in light of the large-scale landfilling of food waste and other starchy materials worldwide. Lipid accumulation by oleaginous yeast is a promising method for biodiesel production from starch. However, most oleaginous yea...

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Detalles Bibliográficos
Autores principales: Tanimura, Ayumi, Takashima, Masako, Sugita, Takashi, Endoh, Rikiya, Kikukawa, Minako, Yamaguchi, Shino, Sakuradani, Eiji, Ogawa, Jun, Ohkuma, Moriya, Shima, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3998020/
https://www.ncbi.nlm.nih.gov/pubmed/24758986
http://dx.doi.org/10.1038/srep04776
Descripción
Sumario:Starch is considered a potential feedstock for biofuel production, particularly in light of the large-scale landfilling of food waste and other starchy materials worldwide. Lipid accumulation by oleaginous yeast is a promising method for biodiesel production from starch. However, most oleaginous yeasts are grown on monosaccharides or oligosaccharides because they cannot directly utilize starch. We therefore investigated the starch-assimilation ability of 1,200 yeasts. We found that Cryptococcus terricola could be used for fuel production through consolidated bioprocessing. C. terricola JCM 24523 exhibited the highest lipid content of 61.96% on medium with 5% starch at 10 days. Fatty acid methyl ester analysis showed that this strain produced high proportions of C16:0 and C18 fatty acids when grown on starch, which are ideal for use in biodiesel. Considering the yield and cost, lipids derived from starch using C. terricola would be a promising alternative source for biodiesel production.