cooling pasturized milk
I live in the Romanian countryside. Everyone here pasteurizes milk in a pan on the stove. No one goes through a quick cooling process: people just don't have conditions to do it, I guess. Instead, the milk is cooled in the pan and then poured into bottles and stored in the fridge. What is the point of the quick cooling that I read about on the internet?
Best Answer
It is safer and helps increase the shelf life of the milk.
Otherwise the milk will pass through dangerous temperatures and and may be recolonized with air born pathogens. These will grow rapidly during the period the milk is warm, and more slowly once it is refrigerated. While the milk may not become immediately unsafe or unpalatable, its storage lifetime will certainly be reduced.
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Quick Answer about "cooling pasturized milk"
Ultra Pasteurized Milk is heated to 280 °F (138 °C) for at least two seconds, then rapidly cooling it down. Since the milk is not hermetically sealed, it must be refrigerated with an average shelf life of 30 – 90 days.How do you cool milk after pasteurizing?
Pour the cooled milk into sterilized containers right away. Put the containers in the fridge to cool the milk to 4\xb0C (40\xb0F) or colder.How do you lower the temperature of pasteurized milk?
Methods and Temperature for Pasteurizing Milk The most popular methods are low temperature, HTST (high temperature, short time) and ultra-high temperature. For low-temperature or VAT pasteurization, you need to keep milk at 63oC (145oF) for 30 minutes.Why milk should be cooled after pasteurization?
Cooling. Directly after arrival at the dairy, the milk is often cooled to a low temperature (5 \xb0C or lower), to temporarily prevent growth of microorganisms. Following pasteurization, the milk is also cooled again to about 4 \xb0C.How do you cool milk quickly?
transfer the just boiled milk into a wide mouthed vessel. If keeping under the fan was possible then turn the fan on at full speed and keep the vessel directly underneath. If fan wasn't an option, then keep the vessel in cold water so that the heat transfer takes place and cools the milk faster.300L Milk Pasteurizer Homogenizer Cooler
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