1. Department of Food Science and Nutrition, Hoseo University, Chungnam 336-795, Korea.
2. Deptartment of Food and Nutrition, Kongju National University, 1 Daehoe-ri, Yesan-eup, Yesan-gun, Chungnam 340-702, Korea.
3. Department of Food and Nutrition, Sookmyung Women's University, Seoul 140-742, Korea.