Feruloyl esterase which acts in synergy with xylanases in degradation of plant cell walls. Hydrolyzes the ester linkage of hydroxycinnamic acids (ferulic acid (FA) and p-coumaric acid) and diferulates present in plant cell walls. Is active on substrates containing ferulic acid ester linked to the C-5 and C-2 linkages of arabinofuranose, while it was found capable of de-esterifying acetylated glucuronoxylans. Efficiently releases ferulic acid (FA) from destarched wheat bran when incubated with an M3 xylanase. feruloyl-polysaccharide + H2O = ferulate + polysaccharide. Optimum pH is 7.0. Optimum temperature is 50 degrees Celsius. Belongs to the carbohydrate esterase 1 (CE1) family. Feruloyl esterase type B subfamily.