New refrigeration techniques.

Discussion in 'Science' started by Brett Nortje, Mar 11, 2018.

  1. Brett Nortje

    Brett Nortje Well-Known Member

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    With the current way fridges work, food eventually spoils if left outside of a freezer. This inconveniences markets and they need to change the food, throwing about a quarter I would say away. With the onus on food selling and not food production, this could prove to be a real problem soon as the food will be diminished in quantity and then there will be less to eat.

    So, how do we keep fresh meat and vegetables for longer? The current system sees us using 'air conditioning' to keep the food fresh. Generations ago, we used salt. What is the next step?

    With the idea of treating the outside of the food with something to keep it from rotting, maybe we could use embalming techniques with simple peel away wrappers? This would see us use some, say, nitrogen wrappers, as they do not heat up at all, to store the food for longer? Or, we could maybe coat the food in some Formalin?
     
  2. DoctorWho

    DoctorWho Well-Known Member

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    No, just use better techniques and storage, bread in a freezer or fridge is not edible any time soon, and breads that are made to last longer are krap.

    Jerky and smoked meats last longer, truth is food preservatives are many times harmful to your health.

    Best method is better management and production of foods, not necessarily storage, for better results.
     
  3. perdidochas

    perdidochas Well-Known Member

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    Nitrogen still heats up. Have you ever smelled formalin? You don't want to eat anything coated with enough Formalin to kill bacteria. (also, that's going back to salt, which is a chemical preservative).
     
  4. Brett Nortje

    Brett Nortje Well-Known Member

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    Oh well, back to the drawing board!
     
  5. Skruddgemire

    Skruddgemire Well-Known Member

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    Agreed. There are several methods one can use to keep food longer (dehydration, canning, etc) but even with those one's best option is to food plan for your family in such a way so you are using the foods before they go beyond the date that the preservation methods allow for.
     
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  6. DoctorWho

    DoctorWho Well-Known Member

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    Now you got it !

    I saw that as a child, strawberries, my sister complained I ate them too fast, I proved that I ate them as the began to spoil and Sis would NOT eat them if a bit moldy.

    Moral, do not purchase more than you can eat before it spoils.
     
  7. Nonnie

    Nonnie Well-Known Member Past Donor

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    I remember the days when mother bought fresh ingredients in paper often in the week and made meals. Anything that needed stored was in the pantry on a slab of stone. Milk was delivered daily in glass bottles.

    Everything now is full of additives, preservatives, colourings etc.. stored in plastic packaging creating a waste/pollution issue.

    And cancer rates continue to rise.
     
  8. DoctorWho

    DoctorWho Well-Known Member

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    Plastic can be recycled, however, storage in plastic may release carcinogens into food over time, as acids and other normal and natural chemical reactions occur over time between food and container.

    Glass is a perfect neutral container for food.
    May explain exponentially increasing cancer rates related to prevalence of food stored in plastic containers.

    Example: food available on supermarkets with a shelf life of several years and the undetectable carcinogen build up during a years time.
    Comprehensive Laboratory investigation needed.
     
    Last edited: Mar 13, 2018
  9. HereWeGoAgain

    HereWeGoAgain Banned

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    Put the food in a centrifuge that spins at near the speed of light. It will slow down time thus preserving the food.

    For a few hundred trillion dollars you can probably preserve a hot dog...well, a thin film that used to be a hot dog.
     
    Last edited: Mar 16, 2018

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