The agro-industrial wastes brewer’s spent grain, soybean peel, corn straw, passion fruit peel, soybean waste, orange peel, pineapple peel, wheat bran, apple peel, sugarcane straw and sugarcane bagasse were obtained locally. The residues were prepared by exhaustive washing with distilled water, dried at 80oC for 24-48h and milled (35 mesh).