which one of these is correct? yes, by heating the milk and then cooling it,milk becomes preserved or no, by killing bacteria,pasteurization retards spoilage but cannot prevent it? which one of these is correct
2006-06-16 09:21:51 · 13 answers · asked by Anonymous in Education & Reference ➔ Homework Help
no.
2006-06-16 09:25:38 · answer #1 · answered by Billy D. 3 · 0⤊ 0⤋
The second one is correct. Pasteurization kills the natural bacteria that is present in fresh milk.
However, it cannot stop the spoilage as airborne bacteria can and does cause the milk to spoil.
2006-06-16 09:26:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the last one! It kills any bacteria that may occur in the milk from the cow, the utilities used when milking and so on.
When milk lasts for more than a week it's due to other stuff they put in the milk for preservation.
Regular, pasteurized milk last for 1 - 2 weeks depending on how much fat its in it. The less fat, the longer it lasts.
2006-06-16 09:24:25 · answer #3 · answered by Tones 5 · 0⤊ 0⤋
No pasteurization removes common bacteria and molds from the milk. It does not prevent milk from spoiling. The milk you get at grocery shops are pasteurized but it spoils after few weeks. Read more about pasteurization at:
http://en.wikipedia.org/wiki/Pasteurization
2006-06-16 09:26:06 · answer #4 · answered by Little Bhishma 4 · 0⤊ 0⤋
I've heard some older people talking in the grocery store about freezing milk. They buy extra because they live far out in the country and if an ice or snow storm comes it might be a week or two before they can get into town. The lady said she bought half-gallon plastic cartons and poured a little out so it could expand and put the lid back on and froze it that way, and then take it out and defrost in the ice box, shake up the ice crystals and it tasted good. Gotta have milk for the raisin bran, lol.
2016-05-19 21:33:42 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The second one is most correct. Pasteuization kills bacteria, especially the ones that cows may carry and can be harmful to humans. I believe it retards spoilage, but I am unsure.
2006-06-16 09:26:05 · answer #6 · answered by annie_lubbers 2 · 0⤊ 0⤋
no, by killing bacteria,pasteurization retards spoilage but cannot prevent it
2006-06-16 10:16:54 · answer #7 · answered by yLime 2 · 0⤊ 0⤋
Definitely doesn't prevent it from spoiling, just slows the process. Leave a gallon in your refrigerator for 3 weeks, then you'll be convinced that milk still spoils.
2006-06-16 09:26:14 · answer #8 · answered by 8eleven5 2 · 0⤊ 0⤋
It slows spoilage, but does not prevent.
2006-06-16 09:24:15 · answer #9 · answered by zippythejessi 7 · 0⤊ 0⤋
Retards spoilage.
Most any milk you have in your home is/was pasteurized.
It still goes bad eventually.
2006-06-16 09:25:41 · answer #10 · answered by nickipettis 7 · 0⤊ 0⤋
No, it can still spoil. All milk is pasturized. Why would it not?
2006-06-16 09:25:09 · answer #11 · answered by Christopher 4 · 0⤊ 0⤋