Research article Special Issues

Identification of superior lipid producing Lipomyces and Myxozyma yeasts

  • Received: 24 November 2015 Accepted: 04 January 2016 Published: 07 January 2016
  • Oleaginous yeasts are of interest for production of single cell oils from sugars. Eighteen members of the Lipomyces and Myxozyma clade were screened for lipid production when cultured on 10%w/v glucose. The highest ranking yeasts included L. tetrasporus (21 g/L), L. spencer-martinsiae (19.6 g/L), and L. lipofer (16.7 g/L). By contrast, Rhodosporidium toruloides, which was included as a positive control, produced 16.7 g/L. The L. tetrasporus and L. lipofer were further characterized for growth and lipid production on sugars present in biomass hydrolysates. These included L-arabinose, xylose, and an equal glucose and xylose mixture. L. tetrasporus had lipid titers of 16.3–20.8 g/L and L. lipofer 12.5–17.0 g/L. When both strains were grown on an equal mixture of glucose and xylose, xylose was consumed immediately following glucose. Lipid contents for the yeasts consisted primarily of C18:1 and C16:0, which makes them a promising source of lipids for fuel applications.

    Citation: Bruce S Dien, Patricia J. Slininger, Cletus P. Kurtzman, Bryan R. Moser, Patricia J. O’Bryan. Identification of superior lipid producing Lipomyces and Myxozyma yeasts[J]. AIMS Environmental Science, 2016, 3(1): 1-20. doi: 10.3934/environsci.2016.1.1

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  • Oleaginous yeasts are of interest for production of single cell oils from sugars. Eighteen members of the Lipomyces and Myxozyma clade were screened for lipid production when cultured on 10%w/v glucose. The highest ranking yeasts included L. tetrasporus (21 g/L), L. spencer-martinsiae (19.6 g/L), and L. lipofer (16.7 g/L). By contrast, Rhodosporidium toruloides, which was included as a positive control, produced 16.7 g/L. The L. tetrasporus and L. lipofer were further characterized for growth and lipid production on sugars present in biomass hydrolysates. These included L-arabinose, xylose, and an equal glucose and xylose mixture. L. tetrasporus had lipid titers of 16.3–20.8 g/L and L. lipofer 12.5–17.0 g/L. When both strains were grown on an equal mixture of glucose and xylose, xylose was consumed immediately following glucose. Lipid contents for the yeasts consisted primarily of C18:1 and C16:0, which makes them a promising source of lipids for fuel applications.


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