Usually a BANANA SKIN but some folks it a 'peel'; as in, "What shall I do with this peel?"
Banana Peel
The skin of a banana is called the peel.
skin
A banana skin is the outer skin of a banana, or, figuratively, a cause of difficulty or embarrassment.
The Long Banana Skin was created in 1975.
a banana
No. The outer skin of a banana is a banana peel and you peel it off.
Banana skin
banna is to skin as orange is to peel
Skin it
What causes a banana's peel to turn brown or black and what causes the fruit to ripen are two different things. A banana's peel turns brown due to an enzyme (polyphenyl oxidase), which is naturally found in the banana. The enzyme polymerises phenols in the banana skin into polyphenols. Polyphenols are similar to melanin, the pigment responsible for the color in our skin. This is what blackens the skin of the bananas.The enzyme that makes bananas sweet is called amylase. Amylase breaks down the starch in the banana fruit. When the starch is broken into its smaller sugar components, called glucose, the banana tastes sweet. The enzyme that softens the banana is called pectinase. Pectinase breaks down the cell walls in the banana fruit so that it is less firm.
Because it is losing water content, which had caused the tissue of the banana skin to swell.