New Shellfish Banana in the works


Xihong Li, a Chinese has developed a spray-on coating, a , to delay the ripening of bananas. The is made from chitosan, a substance derived from shrimp and crab shells. As millions of are allergic to shellfish it is expected that there will be an of from concerned .

The research was presented on the 22nd of August 2012 in at the 244th &; Exposition of the American Chemical Society. The purpose of the coating is to delay ripening of approximately 6.4 billion pounds of bananas that in the U.S eat every year.

“We found that by spraying green bananas with a chitosan aerogel, we can keep bananas fresh for up to 12 days,” said Li, who is the study’s leader. “Once bananas begin to mature, they quickly become yellow and soft, and then they rot. We have developed a way to keep bananas green for a longer time and inhibit the rapid ripening that occurs. Such a coating could be used at home by , in or during shipment of bananas.”

Li explained that bananas have a porous quality and breathe and respire, taking in oxygen and releasing carbon dioxide- through their skin. The more a respires the more it ripens. It follows that the same porous quality will allow a shellfish coating to be absorbed into the actual fruit, amalgamating with the very essence of a .

Concerned , especially those with a , should be aware that the old fashioned will soon rank as a seafood allergen.


Science Daily


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