eli5 why does lactaid last weeks longer then milk?

Question

eli5 why does lactaid last weeks longer then milk?

In: 2

Answer 1

Lactaid pills are dry. It sounds overly simple but that’s because drying out foods is a common and effective means of preserving them. Powdered milk, for example, has a fantastic shelf life.

Lactose-free milk, on the other hand, is just pausterized more than regular milk. It’s actually raised above the boiling point for a moment. This somewhat compromises the taste and nutrition but it also increase the shelf life.