1. Grad. student, Dept. of Grain Science and Industry, 201 Shellenberger Hall, Kansas State Univ., Manhattan, KS 66506; Prof., Dept. of Food Science and Technology, 211 Food Science Building, Univ. of Georgia, Athens, GA 30602–7610; and Prof., Georgia Agric. Exp. Sta., 209 Conner Hall, Univ. of Georgia, Athens, GA 30602–2152