Life cycle analysis of fermentative production of succinic acid from bread waste

According to the US Department of Energy, succinic acid (SA) is a top platform chemical that can be produced from biomass. Bread waste, which has high starch content, second most wasted food in UK and serve as potential low cost feedstock for production SA. This work evaluates environmental performance proposed biorefinery concept SA by fermentation waste bread using cradle-to-factory gate life cycle assessment approach. The was assessed terms greenhouse gas (GHG) emissions non-renewable energy use (NREU). Waste demonstrated better profile compared fossil-based system, however, GHG were about 50% higher processes other biomass feedstocks such corn wet mill or sorghum grains. NREU fermentative significantly lower (~ 46%) than system same established biomass-based processes, thus proving great valuable bioproduction useful chemicals. results show steam heating oil used process biggest contributors emissions. Sensitivity analyses highlighted importance solid generated potentially fish feed. LCA analysis targeted optimization thereby enabling utilization an otherwise stream leading establishment circular economy.