Why are pasteurization laws subject to change?

The correct answer reflects the ongoing evolution of our understanding of food safety and public health. Pasteurization laws are updated to incorporate new research findings that enhance the safety and quality of food products, as well as advancements in pasteurization technologies that may improve efficiency or efficacy. Additionally, changes in food safety standards, influenced by incidents of foodborne illness or emerging pathogens, necessitate regular updates to these laws. This adaptability ensures that pasteurization practices remain effective in safeguarding consumer health.

While other factors, like consumer demand or uniform industry standards, can influence regulatory changes, the primary focus of pasteurization laws is on public health and safety. Therefore, the most relevant reason for their change is the continuous integration of new scientific insights and technological improvements into food processing regulations.