What is the purpose of maintaining a cold chain for pasteurized milk?

• A. To slow growth of spoilage and pathogenic organisms during distribution and storage.
• B. To slow or prevent growth of spoilage and pathogenic organisms during distribution and storage.
• C. To eliminate all pathogens during distribution and storage.
• D. To slow or prevent growth of only spoilage organisms during distribution and storage.

Answer: (B)

Keeping the cold chain for pasteurized milk means holding the product at refrigeration temperatures throughout distribution and storage so microbial growth is slowed or halted. Pasteurization lowers the number of pathogens, but it doesn’t eliminate every one, nor does it prevent post-pasteurization contamination. By staying cold, spoilage organisms grow much more slowly, preserving flavor and texture and extending shelf life. It also minimizes the chance that any remaining pathogens will multiply to unsafe levels during the product’s time in the supply chain. Some microbes can survive or grow slowly at fridge temperatures, which is why maintaining a cold chain is crucial for both safety and quality.