Oilseed by-products as plant-based protein sources: Amino acid profile and digestibility

•By-products from edible oil industries contain high protein content.•Chia residues can fully supply the essential amino acid requirement.•Lysine, methionine and cysteine are the first limiting amino acids.•Phytic acid concentration was lower than most plant protein sources.•Protein digestibility in edible oil meals may reach 85% IPVD.