Scientists develop bananas that won't turn brown after cutting Scientists have developed a gene-edited banana that stays fresh for up to 24 hours after cutting, aiming to reduce waste and improve shelf life. 1 May 2026 A longer-lasting banana has been developed. Gene-edited bananas stay fresh for longer after being cut Scientists have created a gene-edited banana that can remain fresh and yellow for up to 24 hours after being cut, a breakthrough that could significantly reduce food waste and extend shelf life.