Utilisation of waste bread for fermentative succinic acid production

摘要: Abstract A novel biorefinery concept of utilising waste bread as a sole nutrient source for the production rich feedstock fermentative succinic acid by Actinobacillus succinogenes has been developed. Waste was used in solid-state fermentations Aspergillus awamori and oryzae that produce enzyme complexes amylolytic proteolytic enzymes, respectively. The resulting fermentation solids were added directly to suspension generate hydrolysate containing over 100 g/L glucose 490 mg/L free amino nitrogen (FAN). first-order kinetic model describe effect initial mass ratio on FAN profiles. A. fermentations, which led 47.3 g/L with yield productivity 1.16 g SA/g 1.12 g/L h. This corresponds an overall 0.55 g per g bread. is highest compared from other food waste-derived media reported date. proposed process could be potentially utilised transform no-value into acid, one future platform chemicals sustainable chemical industry.