I was out with a couple dairy engineers on the weekend, both of which come from dairy farming families. Apparently there is no difference between Uht and fresh milk, Except that Uht is made in a closed environment to stop contaminants.
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you mean the fresh milk that you have to use within a few days?
Well, my microbiology lecturer said that one is heated in 73 C for 15 sec and UHT milk is heated in 140 C for 3 sec. Therefore, the UHT milk can be stored without refrigeration.
Just a first year student and i don't really know more than that.
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