https://www.allrecipes.com/new-non-browning-bananas-coming-to-stores-11711377Quote
A UK-based company has engineered a banana that doesn't brown and stays fresh for longer.
This is when you can expect to see the banana in grocery stores, including those in the United States.
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A UK-based biotech company called Tropic has successfully engineered a banana that remains fresher for longer—12 hours after it's been peeled, to be exact. How is this possible? They used a gene editing technique called CRISPR to disable the enzyme responsible for making bananas turn brown. Similar to how apples and potatoes change colors once cut, the browning we see in bananas is due to oxidation, and is not a reliable indicator of a banana's ripeness.