1. Department of Food Science and Technology, Ewha Womans University, Daehyeon-dong, Seodaemun-gu, Seoul 120-750, Korea.
2. Environmental Health Center for Atopic Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 136-710, Korea.
3. Korea Food Research Institute, Seongnam, Gyeonggi 463-746, Korea.