title: Valorisation of food waste via fungal hydrolysis and lactic acid fermentation with Lactobacillus casei Shirota.
abstract: Food waste recycling via fungal hydrolysis and lactic acid (LA) fermentation has been investigated. Hydrolysates derived from mixed food waste and bakery waste were rich in glucose (80.0-100.2gL(-1)), fructose (7.6gL(-1)) and free amino nitrogen (947-1081mgL(-1)). In the fermentation with Lactobacillus casei Shirota, 94.0gL(-1) and 82.6gL(-1) of LA were produced with productivity of 2.61gL(-1)h(-1) and 2.50gL(-1)h(-1) for mixed food waste and bakery waste hydrolysate, respectively. The yield was 0.94gg(-1) for both hydrolysates. Similar results were obtained using food waste powder hydrolysate, in which 90.1gL(-1) of LA was produced with a yield and productivity of 0.92gg(-1) and 2.50gL(-1)h(-1). The results demonstrate the feasibility of an efficient bioconversion of food waste to LA and a decentralized approach of food waste recycling in urban area.
authors.affiliation: School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
authors.forename: Tsz Him
authors.initials: TH
authors.lastname: Kwan
authors.affiliation: School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
authors.forename: Yunzi
authors.initials: Y
authors.lastname: Hu
authors.affiliation: School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong. Electronic address: carollin@cityu.edu.hk.
authors.forename: Carol Sze Ki
authors.initials: CS
authors.lastname: Lin
mesh_terms: D061249:Batch Cell Culture Techniques; D002244:Carbon / Q000494:pharmacology; D005285:Fermentation / Q000187:drug effects; D005502:Food; D005632:Fructose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D006868:Hydrolysis; D019344:Lactic Acid / Q000378:metabolism*; D007780:Lacticaseibacillus casei / Q000187:drug effects / Q000378:metabolism*; D014866:Waste Products
chemical_list: D014866:Waste Products; D005632:Fructose; D019344:Lactic Acid; D002244:Carbon; D005947:Glucose
keywords: Food waste treatment; Hydrolysis; Lactic acid fermentation; Lactobacillus casei Shirota; Platform chemicals