Biotransformation of insect processing residues: Production of lactic acid bacterial biomass and associated partial removal of proteins from chitin.
Bioresour Technol
; : 131540, 2024 Sep 26.
Article
in En
| MEDLINE
| ID: mdl-39341428
ABSTRACT
Processing of edible insects typically involves fractionating into high-value food ingredients, which results in by-products containing chitin and insoluble proteins. This study examined the effectiveness of lactic acid bacteria (LAB) in removing proteins from chitin in insect processing residues. Lesser mealworm processing residues were biologically treated for 48 and 120â¯h using LAB strains without added carbon sources. Results showed partial deproteinization, up to 29â¯% with Levilactobacillus brevis after 120â¯h. Most LAB grew up to 2 log10 colony-forming units/mL in the first 48â¯h. Confocal microscopy and Fourier-transform infrared spectra indicated that some protein remained attached to chitin. The molecular weight of solubilized proteins was affected by strain and time of incubation, with antioxidant activity increasing significantly after 120â¯h with Lacticaseibacillus paracasei. The biological treatment of insect processing streams can be a sustainable approach to producing high amounts of LAB biomass with subsequent protein solubilization and chitin release.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2024
Document type:
Article
Country of publication:
United kingdom