Actually, milk has a pH of around 6.5 to 6.7, which makes slightly acidic due to lactic acid. The pH of milk determines, milk is acidic or basic. However, The exact value of pH depends on many factors – such as
- when the milk was produced.
- how long it has been packaged or opened.
- Which type of species.
The pH of Milk also Changes
The pH of milk changes over time. As milk goes sour, it becomes more acidic and the pH gets lower. This phenomenon is done due to the presence of a bacteria – Lactobacillus which convert the sugar( lactose ) into lactic acid.
Whole, evaporated milk is slightly more acidic than regular whole or skim milk.