Bananas are very sensitive to ethylene gas. Ethylene exposure will make them rot or turn black in color.
The symptoms of overripe bananas go beyond the sweet, delicious flavor we’ve come to love; symptoms may include a change in texture and an increase of ethylene production as well as indole (a methyl alcohol) and decay gases like acetaldehyde and methanol. The high levels of these byproducts signify that the banana has spoiled which causes our system to spurn it after we’ve taken a bite; gross! Luckily for all you banana lovers, you can help stop the degradation process with these steps:
1) Peel your bananas on time before they turn black
2) Store them on your