Here's why:

* Pasteurization is a process that uses heat to kill harmful microorganisms in food and beverages. This directly relates to the study of microorganisms, which is the core of microbiology.

* The understanding of microorganisms and their heat sensitivity is fundamental to pasteurization. Microbiologists have researched and developed the specific temperature and time parameters needed for effective pasteurization.

While pasteurization is widely used in food science and technology, its scientific foundation lies firmly in the realm of microbiology.