1. Department of Food and Nutrition, Yonsei University, Seoul 120-749, Korea.
2. Department of Food and Nutrition, Brain Korea 21 Project, College of Human Ecology, Yonsei University, Seoul 120-749, Korea.
3. Yonsei University Research Institute of Science for Aging, Yonsei University, Seoul 120-749, Korea.
4. Misuba RTech Co., Ltd, 917-9 Mok-Dong, Yangchun-Gu, Soeul, Korea.