what exactly makes food “fresh”?

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What’s the difference between fresh and non-fresh fruits and vegetables?

And I don’t mean “fresh food comes from the farmer’s market,” but rather: why does a freshly-picked tomato taste different from one that has been sitting on a shelf? What chemical or biological changes happen?

In: Biology

3 Answers

Anonymous 0 Comments

Bacteria – and bacteria love oxygen. Bacteria also don’t do so as well in colder environments. Bacteria excrete chemicals and products we find to be distasteful/odorous

Keep the food cold and in a vacuum, and it will last longer because the bacteria can’t eat/grow as fast.

Some of what you taste/smell is the result of bacteria feeding on the organic and decaying organic material.

Cellular decay – cells start decaying as soon as life is no longer being sustained, which allows bacteria to flourish

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