Before the 20th century, significant developments in food processing were made by the following researchers:
Nicolas Appert (1749–1841):
He developed the process of canning (also known as appertisation) which involves preserving food by sealing it in airtight containers and heating it to destroy microbes.
Louis Pasteur (1822–1895):
He developed the process of pasteurization, which involves heating liquids like milk and wine to a specific temperature to kill harmful bacteria without affecting the taste or quality.