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protein

Postby lohita » Sun Jun 19, 2005 10:48 pm

in my bio class we studied that when a protein is heated it changes its structure and becomes inactive. if that is the case, then y do we eat omellets when we the protein is no longer active? how is it helpful for us?
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Postby Winter » Sun Jun 19, 2005 11:24 pm

well, we eat a lot of things that aren't helpful to us... :wink:

but, my biology teacher once told us not to cook our eggs all the way, otherwise we wouldn't get any of the nutritional value of the proteins contained in the eggs.
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Postby mith » Mon Jun 20, 2005 3:44 am

The protein just becomes non-functional...do you really need functioning egg proteins in you?
Digestion breaks everything down, our body uses the scrap to make new proteins...too bad we can't recycle at the protein level.
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Postby Poison » Mon Jun 20, 2005 4:23 pm

The structure of the protein changes,not the aminoacids. Our body does not use proteins as they are. Proteins are broken down into aminoacids and then the body uses those aminoacids to sythesize its OWN proteins. ( In some cases proteins can also be used as energy source.)
Hope it is clear now. :)
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Postby lohita » Wed Jun 22, 2005 1:33 am

but then y is it so important to eat a diet rich in protein? :? i am confused
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Postby mith » Wed Jun 22, 2005 2:57 am

Think of it this way, everything you eat is iron, it doesn't matter what form it's in :nails, cars, giant robots etc... Your stomach melts all the metal and your cells use the metal to make new parts it needs. So it doesn't matter what form the protein comes in(what protein you eat), everything is broken down and used again. And of course proteins are necessary for building flesh so you do need a lot of protein in your diet.
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Postby canalon » Wed Jun 22, 2005 3:11 am

But you can also keep in mind that soft boiled eggs or still slightly liquid omelettes are so much better than their hard boil/dried out counter parts. But this has nothing to do with biology, it's just cooking. who will start a topic on salmonella in eggs?)

:wink:

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Postby victor » Wed Jun 22, 2005 6:46 am

Salmonella? are you talking about Salmonella typhii inside an egg? :shock:
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Postby Winter » Wed Jun 22, 2005 6:52 am

ok, i have a question about salmonella.

People say you shouldn't eat raw eggs because of salmonella.
But I know alot of people (my first grade teacher for one) who actually drink breakfast shakes with raw eggs in it. Plus I've heard of people actually cracking raw eggs and gulping down the yolks.

How come they don't get sick?

Do they just have strong immune systems?

:?
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Postby mith » Wed Jun 22, 2005 3:40 pm

It depends on the quality of the egg....if the egg has been left out for quite some time, then there would be more time for the salmonella to incubate.
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Postby MrMistery » Wed Jun 22, 2005 5:41 pm

About that protein rich diet...
It does matter what kind of proteins you eat because you need to get all the essential aminoacids. For example: cereals contain a lot of proteins but are very poor in lisine and triptofan. Legumes are also rich in proteins but poor in metionine. So even if you have a protein-rich diet, if it made out completely of legumes it will not be healthy
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Postby lohita » Thu Jun 23, 2005 12:40 am

hmmmm... i think i got it now! :!: :D
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