i need to know a lot of information on milk pasteurization such as biological principles, microbes, and soxial, ethical, environmental and economical issues. please help me.
2007-02-15 05:09:18 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The amount of information you are looking for calls for research, not Yahoo! Answers.
2007-02-15 05:12:50 · answer #1 · answered by PoppaJ 5 · 0⤊ 0⤋
Pasteurization of milk is nothing but heating each and every particle of milk to 63 degree C for 30 min or 72 degree Celsius for 15 sec or to an equal temperature time combination which helps to destroy all pathogenic and almost all non pathogenic organisms; after pasteurization, milk is usually cooled to 5 degree Celsius or less. The principle behind pasteurization is
It should destroy all the pathogenic organisms
It should inactivate the enzyme alkaline phosphatase
It should cause the least damage to cream line.
That's all.
2007-02-16 02:45:19 · answer #2 · answered by Dairyguy 2 · 0⤊ 0⤋
well pasteurisation is a process of purification of milk devised by louis pasteur. hence the name...
it involved heating milk at 60 degrees celsius for 30 minutes... or so..
thus the bacteria present are either killed or forced into a denatured state... (cos enzymes cannot act above a certain temperature called the biokinetic zone)
... well so much abt the biological part...
dunno abt the social ethics... of course.. it goes a long way in ensuring that diseases arent spread thru milk...
doenst affect the environment in any great way as far as i know.... and abt economy.. it seems to be quite a cheap process.. heating milk to a specific temp aint not gonna cost a lot....
well thats it...!!
2007-02-15 13:32:10 · answer #3 · answered by Hawk 2 · 0⤊ 0⤋
Hi. Pasteurization just heats the milk until most of the bacteria are killed. It also makes the milk taste a little bit cooked.
2007-02-15 13:13:40 · answer #4 · answered by Cirric 7 · 0⤊ 0⤋