Canned fruits and vegetables are cleaned, packed, and thermally processed within hours of being harvested at their peak of flavor, freshness, and nutritional content. Cans enable high-temperature food sterilization and long-term preservation in a durable, tamper-resistant package. The sterilization process eliminates the dangers of food poisoning from microbial contaminants such as e.coli and listeria. Put another way, cans reduce the potential for serious illness. Also, tamper-proof and tamper-resistant cans provide a high level of confidence for consumers that their canned products are safe.
Quality Assurance and Food Can Safety -- Can and Aerosol News