Answer:
The correct option is: 4. Heat at 62.8 degrees C for 30 minutes
Explanation:
Pasteurization is the process or technique of heating packaged as well as the unpackaged liquid food, to remove pathogens and extend the shelf life. In this process, the food is usually heated at temperatures below 100 °C.
Originally, this process involved heating the food at 72.2 °C for 15 seconds and 62.8 °C (145 °F) for 30 minutes, for batch pasteurization.