Why would one have to "REFRIGERATE AFTER OPENING?"

[Superman32 0]

Other factors such redox rx can also make the medium more suitable for growth.

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[SkydiveNFlorida 0]

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Other factors such redox rx can also make the medium more suitable for growth.

oooo, this is getting good. Will they get to this in my Organic Class?

I thought the salt would be unfavorable, but i'm not bacteria expert, in fact, I don't even remember hs biology.

-A

[Dougiefresh 0]

The real problem here is that there are so many different kinds of bacteria, and each one has it's own ideal growth conditions. But they can still grow even if the conditions are not perfect. That's why food can still rot in your refrigerator -- the processes are still occuring, just more slowly.

It really depends on the conditions and what type of food it is. It's entirely possible that the Soy sauce gets refrigerated just as a redundancy -- it's already really salty so not many kinds of bacteria can grow in it, but if you put it at a cold temperature you're pushing the odds of preventing growth in your favor. But if you subject a different food to the same conditions, you might get bacterial growth.

There are bacteria that live on thermal vents at the bottom of the ocean (really hot and high pressure) and there are bacteria that live in the Antarctic ice. If you give bacteria half a chance, they'll grow. And they reproduce so fast that any environmental stresses are quickly adapted to.

That's why it's very important to wash your hands often. Bacteria are everywhere, and get spread easily. So if you handle your food, then go touch a doorknob, you've not only introduced bacteria from your hands into your food but also moved any bacteria from the food to the doorknob.

Think about the kinds of bacteria you're spreading by not washing your hands after going to the bathroom. Really nasty ones like E. coli O157:H7, which can kill you, are found in fecal matter. If you then touch the bathroom doorknob, you're subjecting everyone who comes after you and touches that doorknob to whatever you deposited there. Simple soap kills the vast majority of bacteria by lysing the cell wall. So wash your hands! It does double duty of protecting you from other people's nastiness and protects those around you from yours.

Lecture over. I guess my Biochemistry degree didn't go entirely to waste. If you have questions, you can PM Professor Doug.

Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. --Douglas Adams

[Superman32 0]

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That's why it's very important to wash your hands often. Bacteria are everywhere, and get spread easily. So if you handle your food, then go touch a doorknob, you've not only introduced bacteria from your hands into your food but also moved any bacteria from the food to the doorknob.

Think about the kinds of bacteria you're spreading by not washing your hands after going to the bathroom. Really nasty ones like E. coli O157:H7, which can kill you, are found in fecal matter. If you then touch the bathroom doorknob, you're subjecting everyone who comes after you and touches that doorknob to whatever you deposited there. Simple soap kills the vast majority of bacteria by lysing the cell wall. So wash your hands! It does double duty of protecting you from other people's nastiness and protects those around you from yours

Amen to that brother man

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[Superman32 0]

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Will they get to this in my Organic Class?

I thought the salt would be unfavorable, but i'm not bacteria expert, in fact, I don't even remember hs biology.

-A

Redox rx should have been covered on Gen.Chem,
You will also cover some mechanisms where redox rx takes place.

BTW, I may have mistyped b/f. Salt was often used as a preservative of meats, long before refrigerators existed. So it also inhibits/slows bacterial growth

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