Biofuneling lignin-derived compounds into lipids using a newly isolated Citricoccus sp. P2

Area of Science:

• Biotechnology
• Microbiology
• Biochemistry

Background:

• Bioconversion of lignin-derived compounds (LDCs) into lipids is crucial for sustainable chemical production.
• Developing efficient microbial platforms for LDC utilization remains a significant challenge.

Purpose of the Study:

• To isolate and characterize a ligninolytic bacterium for lipid production from LDCs.
• To investigate the lipid production mechanism and genomic basis of Citricoccus sp. P2.
• To optimize non-sterilized lipid production from LDCs.

Main Methods:

• Isolation and identification of ligninolytic bacteria.
• Cultivation of Citricoccus sp. P2 with various LDCs and concentrations.
• Lipid yield quantification.
• Genomic analysis of strain P2.
• Development of non-sterilized fermentation conditions.

Main Results:

• Citricoccus sp. P2 was isolated, showing efficient degradation of vanillic acid, syringic acid, p-coumaric acid, and phenol.
• Optimal LDC concentrations yielded significant lipid production, with p-coumaric acid yielding 0.24 g/L.
• Genomic insights into LDC bioconversion and stress tolerance were obtained.
• Non-sterilized lipid production significantly enhanced yield due to alkali-halophilic characteristics.

Conclusions:

• Citricoccus sp. P2 is a promising microorganism for converting LDCs into lipids.
• The study provides a foundation for optimizing microbial lipid production from lignin waste.
• This research contributes to the valorization of lignin biomass through biotechnological approaches.