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Robert Ralyea

Robert Ralyea

Senior Extension Associate

110D Stocking Hall
(607) 255-7643

Rob Ralyea is a senior extension associate in the Department of Food Science. He studied at Kansas State University (B.S., Animal Science and Industry), and Cornell University (M.S., Food Science). He joined the Cornell faculty in 2004 after retiring from the United States Army. He manages dairy extension programs throughout the State of NY, specializing in cheese and artisan cheese production and safety. He also is the Manager of the Cornell Food Processing and Development Laboratory.

Research Focus

Scientists in the Milk Quality Improvement Program conduct basic and applied research in microbial food safety and food quality using classical and molecular microbiological techniques. Work in progress focuses on the microbial ecology of dairy systems, identifying specific sources of environmental contamination and use molecular techniques to help better understand the genetics, ecology, and physiology of dairy system bacterial contaminants. Current research focuses primarily around Bacillus cereus and Paenibacillus spp. Specific MQIP projects include research on Gram-positive bacteria, profiles and characteristics of spoilage microorganisms and reasons behind accelerated spoilage of chocolate milk products, tracking and detection of contaminants in the dairy industry and raw milk quality and safety.

Outreach and Extension Focus

Involved in the development, implementation, and assistance in extension training programs and workshops and development of written informational material related to dairy microbiology, production and quality control procedures. Offers individual assistance to processors and milk plant operators to help troubleshoot specific problems in an effort to improve the safety, quality and consumer acceptability of milk and milk products. Works with NYS Agriculture and Markets in training Certified Milk Inspectors and providing annual updates for dairy specialists, conducts training programs for Dairy Processing Plant Superintendents, provides resource information for small entrepreneurs starting dairy processing businesses involving cows, goats or sheep and participates on dairy industry committees concerned with equipment, processing and the environment. He also provides resource information on dairy products to Cooperative Extension agents throughout New York State.
Primary contact for moving artisan cheese movement forward in NY. Responsible for helping artisans understand current regulations and food safety responsibilities of food manufacturers.

Oversees the Food Production and Development Laboratory, Cornell University's state of the art food research space.

Awards and Honors

  • Food Safety Leadership Award (2016) International Dairy Foods Association
  • Education and Professional Improvement Meritorious Service Award (2014) NYS Association for Food Protection
  • Sign of Sustainability (2012) Sustainable Tompkins Board of Directors