1. Dept. of Foods and Nutrition, Keimyung University, 1000, Sin-dang dong, Dal-suh gu, Dae-gu, Korea 704-701.
2. Corresponding author. Phone: 53-580-5876. Fax: 53-580-5885. E-mail address: kohfood@kmu.ac.kr
3. Dept. of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824-1224.