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Mary Engle Pennington was an American bacteriological chemist, food scientist and refrigeration engineer. She was an innovator in the preservation, handling, storage, and transportation of perishable foods and the first female lab chief at the U.S. Food and Drug Administration. She was awarded 5 patents, received the Notable Service Medal from President Herbert Hoover, and received the Garvin-Olin Medal from the American Chemical Society. She is an inductee of the National Inventor's Hall of Fame, the National Women's Hall of Fame and the ASHRAE Hall of Fame.
1 min readSummaryUpdated Oct 2026
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