Soybean hulls (SBH) were provided by Ag Processing, Inc., Eagle Grove, IA and stored at -20 C. The hulls were finely ground in an L'Equip NutriMill (Kitchen Resource, N. Salt Lake, UT) and stored at room temperature until needed. Soybean skim and insoluble soy fibers were produced in the pilot plant at the Center for Crop Utilization Research (CCUR)