Involved in the degradation of plant cell walls. Hydrolyzes the feruloyl-arabinose ester bond in arabinoxylans, and the feruloyl-galactose ester bond in pectin. Active against methyl ferulate, methyl sinapate, methyl caffeate, and alpha-naphthyl esters with chains containing 2 to 8 carbons (C2-C8). Inactive against alpha-naphthyl esters with longer chains (C10 or more). feruloyl-polysaccharide + H2O = ferulate + polysaccharide. Optimum pH is 5.0. Belongs to the AB hydrolase superfamily. FaeA family.