How does a banana get more sugary after it over-ripens, even after it is cut off of its tree?

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How does a banana get more sugary after it over-ripens, even after it is cut off of its tree?

In: Biology

All the sugar is already in the banana but it is woven in long threads that don’t taste sweet in mouth. When it ripens the threads break down and we can taste the sugar again.

It can ripen after being cut off if a fruit first grows to size with starch, and then starch gets broken down into sugar as it ripens. It already contains all the carbohydrates, it’s just more like a potato than a sweet fruit.

Not all fruit work this way though, pomegranates and citruses won’t get any sweeter after they’re picked.