1. BK21Plus; College of Health Science; Korea University; Seoul 02841 Korea
2. Research and Development Center; Namyang Dairy Products Corporation; Sejong 30055 Korea
3. Department of Integrated Biomedical and Life Science; Graduate School; Korea University; Seoul 02841 Korea
4. Department of Hotel Culinary Arts and Nutrition; Kaya University; Gyeongnam 40193 Korea
5. Department of Public Health Sciences; Graduate School; Korea University; Seoul 02841 Korea