Why do bananas turn black in the refrigerator

bananasfood-sciencerefrigeratorstorage-method

I've noticed that a banana in the refrigerator will turn pitch black in just a few hours. Why is this?

Best Answer

Your fridge speeds production of polyphenols, which speeds the blackening process. Unrefrigerated bananas ripen by ethylene gas which will also eventually turn them black, but the cold short circuits that process.