A solvent-free electrostatic-based plant protein separation approach was developed.
Separator consisted of a fluidized bed, tribocharger and a separating chamber.
Polytetrafluoroethylene (PTFE) showed the highest triboelectrification efficiency.
Protein and carbohydrate were charged to different levels using PTFE tribocharger.
Protein and carbohydrate-enriched fractions were produced from Navy bean flour.