Multiobjective decision making strategy for selective albumin extraction from a rapeseed cold-pressed meal based on Rough Set approach

•Multiobjective decision-making optimization of selective albumin extraction.•Use of Pareto’s domain determination and ranking based on the Rough Set approach.•High RA extraction selectivity implied low productivity and solid residue quality.•Identification of optimal selective RA extraction at pH 2-0.11molL−1 NaCl•Overall valorization of the rapeseed cold-pressed meal (napins and solid residue).