Enhancing the extraction of phenolic compounds from biofortified apple peel by-products: ultrasound-assisted recovery, bioaccessibility, and in vitro bioactivity.
This study modeled and optimized ultrasound-assisted extraction (UAE) of phenolic compounds from 'Granny Smith' apple peel (RM) and biofortified peel subjected to controlled abiotic stresses (RM-E). A Box-Behnken design evaluated the effects of extraction ratio, ethanol concentration, and ultrasound power on total phen...