Gregory R. Ziegler, Ph.D.

Gregory R. Ziegler, Ph.D.

  • Distinguished Professor of Food Science
  • Director of Graduate Studies
341 Rodney A. Erickson Food Science Building
University Park, PA 16802

Areas of Expertise

  • Food process engineering
  • Food materials science
  • Biopolymers
  • Chocolate and confectionery


  • Ph.D., Cornell University, 1988, Food Engineering (Minors in Chemical and Agricultural Engineering)
  • M.S., Clemson University, 1982, Animal and Food Industries (Food Science)
  • B.S., The Pennsylvania State University, 1980, Food Science

Research Interests

Foods as composite materials. Physical properties and processing of polymeric and particulate foods, with an emphasis on chocolate and confectionery products. Supported by the William and Lois Dietrich Endowment in Food Bioprocessing to support the Food Characterization Laboratory. Faculty affiliate of the Intercollege Graduate Program in Materials (Materials Research Institute).

Publications (see Google Scholar)

Courses Taught

Dr. Ziegler currently teaches:

FD SC 201, Introductory Food Science Practicum, Practical introduction to the why and how of food processing and manufacturing. 

FD SC 411, Managing Food Quality, Statistical tools for the control and improvement of food quality.