Why don't people store food in vacuum chambers instead of fridges? It would end up keeping our food from expiring for longer. A lot of our food is already vacuum sealed so I don't get why has no one taken this a step further and created vacuum "fridges"?
>>2729 >Vacuum chambers would cause the food to dry out.
True for the most part, but what would be wrong with it if said food was already freeze dried/dried anyway?
>It wouldn't even stop bacteria because not all of them require oxygen
Anaerobic bacteria still requires an atmosphere in order to survive. Oxygen is not an atmosphere, it's an element residing in an atmosphere.
>>2731 >still requires an atmosphere to survive
I don't think so, bacteria can survive underwater. Maybe you'd consider water to be the "atmosphere" but even so, the bacteria could damage the food.
proofs? unless you freeze dry something first and then put it in the vacuum chamber, then i suppose that it would be dry. but, that would be because of you purposefully freezing said item in a fridge and the drying said item by supplying heat within the chamber. sure, the water would evaporate in the chamber with time, but it would still be stuck in the chamber.
can you prove that anaerobic bacteria can survive with no atmosphere though? i simply can't see that working as there wouldn't be anything the bacteria could reasonably sustain itself with.
Because you can't sustain a vacuum on food. Think about it, anything you put in a fridge has a lot of water in it. If you put that stuff in a vacuum chamber, the water will boil off instantly, and you won't have a vacuum anymore. Anything that doesn't have water that could boil off probably doesn't need to be refrigerated. But if you want to try to store all your food in one, go ahead.
You'd have to deal with the water boiling off (freeze drying of porous foods, and freeze drying of the surface of not-so-porous foods.
Any part of the food that was sufficiently air-tight enough to maintain some pressure in a vacuum (perhaps inside of bones, in bone marrow, inside certain baked goods, etc) would still experience bacterial growth.
The thing is, all "anaerobic" bacteria even means is bacteria that can sustain itself without oxygen. All I'm going to say here is that I have searched of if they can survive without an atmosphere and I have found a complete absence of information of whether they can do that or not. Even if you could prove that some could do that (which I highly doubt), it wouldn't prove that all of them could do that.
>But what if they could!!!
Still wouldn't matter as the vacuum chamber is sealed off. Meaning that bacteria shouldn't be able to penetrate the chamber. Bacteria would have to have spore or some other method already present in the food in order to have any presence within the chamber. Also, this "what if" scenario is not a good argument against this idea as refrigerators can also facilitate bacteria.
>so I don't get why has no one taken this a step further and created vacuum "fridges"?
The reason for this is because what the current regime wants is pointless consumerism. The last thing they would want is for you to have something that wouldn't profit them (besides the people who manufacture the vacuum fridges), as the consumerism of multiple food/related products outways the benefit of them producing something that would extend the life of food to that extent. The only food that has long shelf lives are either very expensive, are toxic to the body, or both.
Why would you even need a vacuum chamber? If some type of food could be easily preserved with a vacuum, you just need it to be hermetically sealed in a bag, which is usually done before it's even sold.
Chemicals/compounds in general decompose slower under lower temperatures.
also
>1. Vacuum chambers would cause the food to dry out.
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>Why don't people store food in vacuum chambers instead of fridges?
Some foods are stored this way
Why don't people store food in vacuum chambers instead of fridges? It would end up keeping our food from expiring for longer. A lot of our food is already vacuum sealed so I don't get why has no one taken this a step further and created vacuum "fridges"?