Liquid submerged fermentation by selected microbial strains for onion skins valorization and its effects on polyphenols.

ABSTRACT: Onion skins, actually recycled as organic fertilizers, could be used as a substrate in environmental-friendly bioprocesses to recover high-value bioactive compounds and food ingredients.In this work, a bioprospecting method was carried out including 94 bacterial and 45 yeast strains from several agri-food and environmental niches to verify their ability to grow on onion skins as unique nutrients source.Red and yellow onion skins were assessed by newly selected starter-driven liquid submerged fermentation assays mainly aimed at the release and modification of polyphenols through microbial activities. Fermented onion skins were also investigated as a inexpensive favourable source of microbial enzymes (amylases, proteases, lipases, esterases, cellulases, xylanases).In red onion skins, the tre

SUBMITTER: Ramires FA 

PROVIDER: S-EPMC10371881 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature