Milky way

摘要

Homogenisation What is it, why do we do it and should we stop? What happened to the layer of cream at the top of the milk bottle? The answer is that a scientist came up with an idea lo get rid of it. He called the process 'homogcnisation' and it proved so effective that milk producers all over the world adopted it as standard practice. Why? That layer of cream is the first thing to go rancid and, hack in the 1950s, a bottle of milk would last merely two days in the fridge before it went off. Now itis possible to keep some milks for almost three weeks. But increasing evidence suggests that there is a health cost to convenience.