1. Dept. of Food Science and Biotechnology; Sungkyunkwan Univ; Suwon 440-746 Korea
2. Dept. of Food Science and Technology; Seoul Women's Univ; Seoul 139-774 Korea
3. Div. of Environmental Science and Ecological Engineering; Korea Univ; Seoul 136-701 Korea
4. Korea Univ.; Korea Univ; Seoul 136-701 Korea
5. Dept. of Food Science and Technology; Chung-Ang Univ; Anseong 456-756 Korea
6. Dept. of Food Bioscience and Technology; Korea Univ; Seoul 136-701 Korea