Integrated extraction-adsorption process for selective recovery of antioxidant phenolics from food industry by-product

•Valorisation of food by-product by selective recovery of antioxidant polyphenols.•Simultaneous extraction and enrichment of antioxidant polyphenols.•Multi-criteria mathematical model proposed to optimize polyphenols recovery.•Model considering polyphenols yield, antioxidant activity and energy consumption.•Integration improved recovery yields, reduced unit operation and energy consumption.