Abstract
Research has recently intensified to discover new oleaginous yeast strains able to function quickly and efficiently in low-cost lignocellulosic hydrolysates to produce high-quality lipids for use in biodiesel and chemicals. Detailed techniques are given here for ranking candidate yeast strains based on conversion of hydrolysate sugars to lipids and then optimizing cultivation conditions for best performers in a 96-well aerobic microcultivation format. A full battery of assays applicable to high throughput of small-volume samples are described for efficiently evaluating cell biomass production, lipid accumulation, fatty acid composition, and sugar utilization. Original data is additionally presented on the validation of the microtechnique for GC analysis of lipid composition in yeast since this application involved modification of a previously published assay for microalgae.
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Acknowledgments
The authors would like to thank Maureen Shea-Andersh for her valuable technical assistance in support of the oleaginous yeast project.
Disclaimer: The mention of trade names or commercial products in this chapter is solely for the purpose of providing specific information and does not imply any recommendation or endorsement by the US Department of Agriculture. USDA is an equal opportunity provider and employer.
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Slininger, P.J., Dien, B.S., Quarterman, J.C., Thompson, S.R., Kurtzman, C.P. (2019). Screening for Oily Yeasts Able to Convert Hydrolysates from Biomass to Biofuels While Maintaining Industrial Process Relevance. In: Balan, V. (eds) Microbial Lipid Production. Methods in Molecular Biology, vol 1995. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9484-7_16
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DOI: https://doi.org/10.1007/978-1-4939-9484-7_16
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