In this video, discover the innovative fermentation process developed by PHENOLEXA’s partner CNR-ISPA that unlocks the potential of agro-industrial by-products. Efficient conversion and enhanced release of essential phenolic compounds using selected microorganisms. Scaling up microbial pretreatment with onion skins and chicory leaves, achieving an impressive 30% recovery of total phenolic content in this white and red onion sample. At the same time, explore the possibilities of re-using onion skins as a fermentation substrate and progress towards a biorefinery process for value-added products from onion by-products.