1. Department of Food Science and Nutrition, Catholic University of Daegu, Gyeongsan, Gyeongbuk 712-702, Korea, R & D Center, Saimdang Cosmetics Co. Ltd., Yeongdong, Chungcheongbuk-do 370-802, Korea, and Agricultural Research Service, U.S. Department of Agriculture, ERRC, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038