Pasteurization is the process of heating beverages or food, such as milk, beer, or cheese, to a specific temperature for a specific period of time in order to kill microorganisms that could cause disease, spoilage, or undesired fermentation. The process was named after its creator, French chemist and microbiologist Louis Pasteur, who conducted the first pasteurization test with fellow French scientist Claude Bernard in 1862. Why is pasteurization not designed to kill all microorganisms in food? Discuss