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 Why do bananas get bruised as they age?

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PostSubject: Why do bananas get bruised as they age?   Wed Feb 25 2009, 18:43


Why do bananas get bruised as they age?




Bananas do not bruise as they age, unless they are mishandled.

Liken the black spots
on bananas to the liver spots on mature adults…they appear with age,
even if they go untouched. The hormone ethylene, a ripening agent found
in the skin of the banana, transforms a green banana into the appealing
yellow fruit we purchase at the market.


Ethylene, however, continues the ripening process, which gives the banana a "bruised" appearance, and eventually turns the banana black in color.
There is no switch to turn off this process, but by placing the banana
in a cool place, one can slow the process. The refrigerator is no place
for a banana, because this is certain to blacken it prematurely. The
cold air, to which the banana is exposed, causes the production of
blackening compounds known as polyphenals.







  • In North America more bananas are eaten every day than any other fruit.

  • Bananas aren't grown on trees. They're part of the lily family, a
    cousin of the orchid, nothing but a very yellow and plump member of the
    herb family. With stalks 25 feet high, they're the largest plant on
    earth without a woody stem.

  • The word banana is African, though, a word carried to the New World
    by Portuguese slave traders. In Alexander the Great's time, bananas
    were called “pala” in Athens.

  • North America got its first taste of the tropical fruit in 1876 at
    the Philadelphia Centennial Exhibition. Each banana was wrapped in foil
    and sold for 10 cents.

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