It’s much older than that, food standards go way back. England’s rather famous Assize of Bread and Ale regulating quality dates to 1266. There is likely thousands of years of history around bakers or brewers trying to save money and laws or customs designed to regulate it. https://en.wikipedia.org/wiki/Assize_of_Bread_and_Ale

That said, the knowledge of pathogens is relatively recent ~1670s which ended up changing many rules. Historically food safety was a major issue that killed a lot of people. But, it’s not really something most people know much about.