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Metagenomic study of the food waste

ABSTRACT: Metagenomic study of the food waste

PROVIDER: PRJEB85115 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR14767319_1.fastq.gz	Fastqsanger.gz
	ERR14767319_2.fastq.gz	Fastqsanger.gz
	ERR14767320_1.fastq.gz	Fastqsanger.gz
	ERR14767320_2.fastq.gz	Fastqsanger.gz
	ERR14767321_1.fastq.gz	Fastqsanger.gz

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Global Transcriptomics Reveals Carbon Footprint of Food Waste in the Bioconversion of Ecofriendly Polymers

Project description:Food waste is a major source of environmental pollution, as its landfills attribute to greenhouse gas emissions. This study developed a robust upcycling bioprocess that converts food waste into lactic acid through autochthonous fermentation and further produces biodegradable polymer polyhydroxybutyrate (PHB). Food can be stored without affecting its bioconversion to lactic acid, making it feasible for industrial application. Mapping autochthonous microbiota in the food waste fermentation before and after storage revealed lactic-acid-producing microorganisms dominate during the indigenous fermentation. Furthermore, through global transcriptomic and gene set enrichment analyses, it was discovered that coupling lactic acid as carbon source with ammonium sulfate as nitrogen source in Cupriavidus necator culture upregulates pathways, including PHB biosynthesis, CO2 fixation, carbon metabolism, pyruvate metabolism, and energy metabolism compared to pairing with ammonium nitrate. There was ∼90 % PHB content in the biomass. Overall, the study provides crucial insights into establishing a bioprocess for food waste repurposing.

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