Evaluating the Potential of Rhodosporidium toruloides -1588 for High Lipid Production Using Undetoxified Wood Hydrolysate as a Carbon Source

Rahul Saini, Krishnamoorthy Hegde, Carlos Saul Osorio-Gonzalez, Satinder Kaur Brar and Pierre Vezina
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Rahul Saini: Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, ON M3J 1P3, Canada
Krishnamoorthy Hegde: Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, ON M3J 1P3, Canada
Carlos Saul Osorio-Gonzalez: Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, ON M3J 1P3, Canada
Satinder Kaur Brar: Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, ON M3J 1P3, Canada
Pierre Vezina: Directeur énergie et environnement, Conseil de l’industrie Forestière du Québec, 1175 Avenue Lavigerie Suite 200, Québec, QC G1V 4P1, Canada

Energies, 2020, vol. 13, issue 22, 1-14

Abstract: The study aims to explore microbial lipid production using an abundant and low-cost lignocellulosic biomass derived from forestry residues. Sugar-rich undetoxified hydrolysate was prepared using hardwood and softwood sawdust and used for lipid production as a carbon source from an oleaginous yeast, Rhodosporidium toruloides -1588. The maximum biomass obtained was 17.09 and 19.56 g/L in hardwood and softwood hydrolysate, respectively. Sugar consumption in both hydrolysates was >95%, with a maximum lipid accumulation of 36.68% at 104 h and 35.24% at 96 h. Moreover, R. toruloides -1588 exhibited tolerance to several toxic compounds such as phenols, organic acids and furans present in hydrolysates. The lipid characterization showed several monosaturated and polyunsaturated fatty acids, making it a potential feedstock for biofuels and oleochemicals production. This study confirms the credibility of R. toruloides -1588 as a suitable lipid producer using hydrolysates from forestry residues as a substrate. Additionally, lipids obtained from R. toruloides -1588 could be a potential feedstock for advanced biofuel production as well as for food and pharmaceutical applications.

Keywords: Rhodosporidium toruloides; microbial lipid; lignocellulosic biomass; forestry residue; undetoxified hydrolysate (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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