1. Biofuneling lignin-derived compounds into lipids using a newly isolated Citricoccus sp. P2.
- Author
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Wang, Yan, Luo, Chao-Bing, and Li, Yuan-Qiu
- Subjects
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SYRINGIC acid , *LIPIDS , *NUCLEOTIDE sequencing , *BIOCONVERSION , *LIGNINS - Abstract
[Display omitted] • Citricoccus sp. P2 degraded 44.63% of lignin and produced 23.96% of lipid content. • Citricoccus sp. P2 has demonstrated high effectiveness in LDCs conversion. • Genome sequencing revealed a biological funneling pathway for LDCs into lipid. • Lipid yield was 0.39 g/g LMS-treated lignin. • Non-sterilized fermentation efficiently improved lipid production from LDCs. Lignin-derived compounds (LDCs) bioconversion into lipids is a promising yet challenging task. This study focuses on the isolation of the ligninolytic bacterium Citricoccus sp. P2 and investigates its mechanism for producing lipids from LDCs. Although strain P2 exhibits a relatively low lignin degradation rate of 44.63%, it efficiently degrades various concentrations of LDCs. The highest degradation rate is observed when incubated with 0.6 g/L vanillic acid, 0.6 g/L syringic acid, 0.8 g/L p-coumaric acid, and 0.4 g/L phenol, resulting in respective lipid yields of 0.16 g/L, 0.13 g/L, 0.24 g/L, and 0.13 g/L. The genome of strain P2 provides insights into LDCs bioconversion into lipids and stress tolerance. Moreover, Citricoccus sp. P2 has been successfully developed a non-sterilized lipid production using its native alkali-halophilic characteristics, which significantly enhances the lipid yield. This study presents a promising platform for lipids production from LDCs and has potential to promote valorization of lignin. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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