Pasteurization guarantees zero pathogens in milk.

Pasteurization guarantees zero pathogens in milk.

• A. True
• B. False. It greatly reduces pathogens, but post-pasteurization contamination and heat-resistant spores can still pose risks
• C. Not enough information
• D. It guarantees zero pathogens if HTST is used

Answer: (B)

Pasteurization reduces the number of pathogens in milk, but it does not eliminate them completely. The process is designed to lower microbial load to safer levels and extend shelf life, not to sterilize milk. Some heat-resistant spores can survive standard pasteurization, and contamination after pasteurization (during handling, packaging, or storage) can reintroduce pathogens. So while pasteurization greatly lowers risk, it cannot guarantee zero pathogens.

Pasteurization reduces the number of pathogens in milk, but it does not eliminate them completely. The process is designed to lower microbial load to safer levels and extend shelf life, not to sterilize milk. Some heat-resistant spores can survive standard pasteurization, and contamination after pasteurization (during handling, packaging, or storage) can reintroduce pathogens. So while pasteurization greatly lowers risk, it cannot guarantee zero pathogens.