1. Department of Food Science, Purdue University, Philip E. Nelson Hall of Food Science, 745 Agriculture Mall Drive, West Lafayette, IN 47907-200 e-mail:
2. Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824 e-mail:
3. Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824 e-mail:
4. Mead Johnson Nutrition, 2400 W Lloyd Expy, Evansville, IN 47712 e-mail: