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Microbial Lipid Production from Corn Stover by the Oleaginous Yeast Rhodosporidium toruloides Using the PreSSLP Process

1
Sci-Tech Center for Clean Conversion and High-valued Utilization of Biomass, Jilin Province, Northeast Electric Power University, Jilin 132012, China
2
Division of Biotechnology, Dalian Institute of Chemical Physics, CAS, Dalian 116023, China
3
School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China
*
Authors to whom correspondence should be addressed.
Energies 2019, 12(6), 1053; https://doi.org/10.3390/en12061053
Received: 26 February 2019 / Revised: 13 March 2019 / Accepted: 14 March 2019 / Published: 19 March 2019
(This article belongs to the Section Bio-Energy)
Dry acid pretreatment and biodetoxification (DryPB) has been considered as an advanced technology to treat lignocellulosic materials for improved downstream bioconversion. In this study, the lipid production from DryPB corn stover was investigated by the oleaginous yeast Rhodosporidium toruloides using a new process designated prehydrolysis followed by simultaneous saccharification and lipid production (PreSSLP). The results found that prehydrolysis at 50 °C and then lipid production at 30 °C improved lipid yield by more than 17.0% compared with those without a prehydrolysis step. The highest lipid yield of 0.080 g/g DryPB corn stover was achieved at a solid loading of 12.5%. The fatty acid distribution of lipid products was similar to those of conventional vegetable oils that are used for biodiesel production. Our results suggested that the integration of DryPB process and PreSSLP process can be explored as an improved technology for microbial lipid production from lignocellulosic materials. View Full-Text
Keywords: corn stover; dry acid pretreatment and biodetoxification; microbial lipids; prehydrolysis; Rhodosporidium toruloides corn stover; dry acid pretreatment and biodetoxification; microbial lipids; prehydrolysis; Rhodosporidium toruloides
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MDPI and ACS Style

Dai, X.; Shen, H.; Li, Q.; Rasool, K.; Wang, Q.; Yu, X.; Wang, L.; Bao, J.; Yu, D.; Zhao, Z.K. Microbial Lipid Production from Corn Stover by the Oleaginous Yeast Rhodosporidium toruloides Using the PreSSLP Process. Energies 2019, 12, 1053. https://doi.org/10.3390/en12061053

AMA Style

Dai X, Shen H, Li Q, Rasool K, Wang Q, Yu X, Wang L, Bao J, Yu D, Zhao ZK. Microbial Lipid Production from Corn Stover by the Oleaginous Yeast Rhodosporidium toruloides Using the PreSSLP Process. Energies. 2019; 12(6):1053. https://doi.org/10.3390/en12061053

Chicago/Turabian Style

Dai, Xiaozan; Shen, Hongwei; Li, Qiang; Rasool, Kamal; Wang, Qian; Yu, Xue; Wang, Lei; Bao, Jie; Yu, Dayu; Zhao, Zongbao K. 2019. "Microbial Lipid Production from Corn Stover by the Oleaginous Yeast Rhodosporidium toruloides Using the PreSSLP Process" Energies 12, no. 6: 1053. https://doi.org/10.3390/en12061053

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