13 Feb 2013 ... Why does a banana peel turn black within a short time after the fruit inside is consumed, while it stays yellow for a much longer time when it is ...

They turn Black because mold grows on them if they get old. Actually... "The green skin of banana contains a gaseous plant hormone, ethylene, which diffuses ...

This is why black bananas are often preferred for breads and such - when the peel has turned black, the banana has converted almost all the ...