how to reword this sentence? i don't want to plagiarism. please help. thanks in advance!?

To pasteurize milk, it must reach at least 161 degrees Fahrenheit for a minimum of 15 seconds before being cooled very quickly.

The overall temperature of milk during pasteurization is raised to a minimum of 161 F for no less than 15 seconds before it is rapidly cooled.

In the process of pasteurization, the milk's overall temperature is raised up to 161 (degrees) F for more than 15 seconds, then after which, it is rapidly cooled.

for more than 15 seconds during pasteurization, the temperature of milk is raise to at least 161 F and then rapidly cools.

(idk if its good enough..?)

There are always MANY ways to say the same thing in English: it's just a matter of re-phrasing and using different words which add up to the same thing. It should not be difficult to figure out at least a couple of these, in any given situation - but it helps IMMENSELY if you understand what you are trying to phrase or express in a different way. SO, the best way to avoid plagerism is to a) gather the information you need, from more than one source (for purposes of verification: one source can be wrong far more often than 10 sources which all say the same thing!!), b) digest the information and come to understand it, then c) State the same thing in your own words - citing your sources as you should be doing, but using YOUR words, based upon your understanding, and not THEIR words.