Question

How is milk preserved? ​

Answer 1

Hydrogen peroxide (H2O2) is widely used as a preservative in milk and milk products because of its potential to inhibit microbial proliferation and milk spoilage. It is considered as an “Excellent and Safe Preservative,” especially in developing countries.

Answer 2

Explanation:

Milk is almost sterile when secreted from a healthy udder. Cooling to 4 °C within this period maintains the original quality of the milk and is the method of choice for ensuring good-quality milk for processing and consumption. ... Cooling can be achieved by mechanical refrigeration or cooling tanks.