btw, there are many different method beside pastorization and UHT. beside an "sterilized" milk (obtained with 20 mins at 116-120 °C) and others intermedied heat

btw, there are many different method beside pastorization and UHT. beside an "sterilized" milk (obtained with 20 mins at 116-120 °C) and others intermedied heat treatments there is also the microfiltration: the milk pass through a microscopic membrane, that "filter out" the patogenic elements