Mary Engle Pennington

An American bacteriological chemist and refrigeration engineer contributed to food preservation and safety. Pennington studied at the University of Pennsylvania and later worked for the United States Department of Agriculture. Significant advancements in refrigeration technology and methods for food storage were influenced by her work. She was an advocate for the use of controlled temperature in food handling, which helped reduce foodborne illnesses. Pennington's research included studies on the bacterial content in food and how refrigeration could mitigate spoilage and health risks. She became a prominent figure in her field, especially as a woman in science during her time.