1. Department of Food Engineering, Dankook University, Chunan 330-714, Korea; Korea Food Research Institute, San 46-1, Baekhyun-dong, Bundang-gu, Seongnam-si, Kyunggi-do 463-420, Korea; Research and Development Center, Nong Shim Company, Ltd., 203-1, Dangjeong-dong, Kunpo-si, Kyunggi-do 435-030, Korea; and Department of Food Science and Human Nutrition, University of Illinois at Urbana−Champaign, 1302 West Pennsylvania Avenue, Urbana, Illinois 61801