The in vitro protein digestibility (IVPD) of the experimental breads was determined by the method of Akeson and Stahmann (1964). One gram of each sample was incubated with 1.5 mg of pepsin, in 15 ml of 0.1 M HCl, at 37 °C for 3 h. After neutralization with 2 M NaOH and ad- dition of 4 mg of pancreatin, in 7.5 ml of phosphate buffer (pH 8.0), 1 ml of toluene was added to prevent microbial growth, and the solution was incubated for 24 h at 37 °C. After 24 h, the enzyme was inactivated by the addition of 10 ml of trichloroacetic acid (20%, wt/vol), and the