1. Department of Human Ecology, College of Agriculture and Related Sciences Delaware State University 1200 N. Dupont Highway Dover DE 19901 U.S.A.
2. Department of Food Science and Nutrition, College of Food, Agricultural and Natural Resource Sciences University of Minnesota 1334 Eckles Avenue St. Paul MN 55108 U.S.A.
3. Dairy and Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service USDA 600 E. Mermaid Lane Wyndmoor PA 19038 U.S.A.