谷歌随手搜了一篇《Difference between fresh milk and carton milk?》,不过好像有点答非所问。Anyway,现摘录和翻译如下:
What is the difference between pasteurised and UHT milk?
巴氏消毒牛奶和超热处理牛奶的区别
Most milk we buy in the UK is pasteurised. Milk is pasteurised by heating it, usually to 71.7°C for 15 seconds. This gets rid of any food poisoning bacteria in the milk and reduces the bacteria that make milk go off. So pasteurising milk makes it safer to drink and makes it last longer.
(答主应该是个英国人)大部分我们在英国买的牛奶都是巴氏消毒的。牛奶通常被加热到71.7摄氏度15秒钟。这样可以去除牛奶里任何引起食物中毒的细菌,并减少牛奶产出时的细菌。所以巴氏消毒过的牛奶在食用时更安全并且能储存更长时间。
UHT stands for 'ultra heat treated'. UHT milk, also called long-life milk, has been heated to at least 135°C for at least one second. This destroys all bacteria in the milk and makes it last much longer than ordinary pasteurised milk. UHT tastes different to other milk because of the high temperatures used when it's treated.
UHT代表“超热处理”。UHT牛奶,又称长寿命牛奶,在135摄氏度的高温加热至少一秒钟。这种方式杀死了牛奶里的所有细菌,并且存放时间比传统的经过巴氏消毒的牛奶的存放时间要更长得多。UHT牛奶的口感和其他牛奶的口感不一样,是因为它经过了高温处理。
You can buy unpasteurised milk in some places. Because it hasn't been heat-treated, unpasteurised milk can contain bacteria that could cause food poisoning. Young children, elderly people, pregnant women and people who are ill should avoid unpasteurised milk.
你能在一些地方买到没有经过巴氏消毒的牛奶。因为它没有经过加热处理,所以这样的牛奶里会有引起食物中毒的细菌。小孩,老人,孕妇和生病的人应该避免食用未经过巴氏消毒的牛奶。