ripened bananas (left, under sunlight) fluoresce in blue when exposed uv light.
tree-ripened cavendish bananas have greenish-yellow appearance changes brownish-yellow ripen further. although both flavor , texture of tree-ripened bananas regarded superior type of green-picked fruit, reduces shelf life 7–10 days.
bananas can ordered retailer ungassed (i.e. not treated ethylene), , may show @ supermarket green. guineos verdes (green bananas) have not been gassed never ripen before becoming rotten. instead of fresh eating, these bananas can used cooking, seen in jamaican cuisine.
a 2008 study reported ripe bananas fluoresce when exposed ultraviolet light. property attributed degradation of chlorophyll leading accumulation of fluorescent product in skin of fruit. chlorophyll breakdown product stabilized propionate ester group. banana-plant leaves fluoresce in same way. green bananas not fluoresce. study suggested allows animals can see light in ultraviolet spectrum (tetrachromats , pentachromats) more detect ripened bananas.
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