1. Dept. Agriproduct Processing, Rural Resources Development Institute, National Institute of Agricultural Science and Technology, RDA, Suwon, Gyeonggi-do 441-853, Korea.
2. Dept. Food Science and Technology, Ewha Womans University, Seoul 120-750, Korea.
3. Corresponding author. Phone/Fax: +82-(0)2-3277-3095. E-mail: kokim@ewha.ac.kr