Why Foods Spoil - Molds, Yeasts, Bacteria (1957)

This 1957 educational film explores the science behind food spoilage and preservation. Using color footage, it demonstrates how molds, yeasts, and bacteria grow, multiply, and ultimately cause food to decay. The film explains various methods to prevent spoilage, including drying, smoking, canning, freezing, pasteurization, dehydration, and even gamma radiation. Industrial processes are highlighted, with assembly line footage from a cannery showcasing large-scale food preservation techniques. Produced by Encyclopedia Britannica, this informative film provides a mid-century perspective on food safety and storage advancements.