Jump to Main Content
Single Cell Oil Production from Hydrolysates of Inulin by a Newly Isolated Yeast Papiliotrema laurentii AM113 for Biodiesel Making
- Wang, Guangyuan, Liu, Lin, Liang, Wenxing
- Applied biochemistry and biotechnology 2018 v.184 no.1 pp. 168-181
- batch fermentation, biodiesel, biomass, fatty acids, feedstocks, fuel production, hydrolysates, inulin, microbial oils, sugars, yeasts
- Microbial oils are among the most attractive alternative feedstocks for biodiesel production. In this study, a newly isolated yeast strain, AM113 of Papiliotrema laurentii, was identified as a potential lipid producer, which could accumulate a large amount of intracellular lipids from hydrolysates of inulin. P. laurentii AM113 was able to produce 54.6% (w/w) of intracellular oil in its cells and 18.2 g/l of dry cell mass in a fed-batch fermentation. The yields of lipid and biomass were 0.14 and 0.25 g per gram of consumed sugar, respectively. The lipid productivity was 0.092 g of oil per hour. Compositions of the fatty acids produced were C₁₄:₀ (0.9%), C₁₆:₀ (10.8%), C₁₆:₁ (9.7%), C₁₈:₀ (6.5%), C₁₈:₁ (60.3%), and C₁₈:₂ (11.8%). Biodiesel obtained from the extracted lipids could be burnt well. This study not only provides a promising candidate for single cell oil production, but will also probably facilitate more efficient biodiesel production.