How to tell whether a banana is ripe

banana turn blue when they're ripeOkay, this is probably not that difficult – if the skin is green and it feels as hard as a rock, it probably isn’t going to taste too good. Yellow and soft is best.

Well, a team of scientist have recently discovered if you are blessed with X-ray vision, then ripe bananas are BLUE.

Chlorophyll turns blue in ripe bananas

Turns out that as chlorophyll degrades during the ripening process, breakdown products accumulate in the peel of the banana.

The breakdown products are able to absorb the energy from light in the UV range to give off a blue glow. So when viewed under disco lights, the ripe banana turns into a blue finger.

The level of blue increases as the banana ripens, but once it reaches its sell by date, i.e. it is over ripe and bordering on vrot, the blue hue disappears.

Banana only property

Glowing metabolites are not unique to bananas, but they are the only fruit (discovered so far) that is able to sustain it for long.

Long enough to be seen………..provided you have the ability to see into the UV range.

Banana diners do UV

Animals who dine on bananas for a living, are often able to see in the UV range, so being able to spot ripe bananas would be helpful.

No need to climb the tree and do a manual inspection of the goods. A quick eye scan would indicate a high quality product.

Seeing blue bananas

Of course, seeing blue bananas as a human being is only possible if you have acquired a superpower within your genes, have indulged in a little pharmacological magic or are dancing the night away under party lights.

But if you are seeing blue bananas – they’re good for you.

Blue Luminescence of Ripening Bananas.Angewandte Chemie International Edition (2008) 47(46):8954-8957.  Simone Moser, Thomas Müller,  Marc-Olivier Ebert, Steffen Jockusch,  Nicholas?J. Turro, Bernhard Kräutler.

 

Interested in learning more about the effects of food on your body chemistry ?

Subcribe to E-spoons, to get e-mail updates once a month and find out how minor adjustments can get your body chemistry balanced to prevent and/or tame cardiovascular disease, diabetes etc.

NOTE : Privacy & spam policy. Spoonful of Science will not rent, trade or sell the e-mail list to anyone. You can unsubscribe at any time by following the unsubscribe link.

Know someone who will find this post useful ? Share it on facebook, linkedin, twitter

Further reading

hiding under a blue umbrella proof reading tip fat man in a hot house
 Blue umbrellas rule when it comes to sun protection How to “see” those spelling mistakes that hurt you Go blue this winter to be skinny and green 

The 7 Big Spoons™…. are master switches that turn health on.

balance eicosanoids rein in insulin dial down stress sleep vitamin D microflora think
Balance Eicosanoids Rein in insulin Dial down stress Sleep ! Increase Vit D Culivate microflora Think champion

Hire Dr Sandy from a Spoonful of Science to be the keynote speaker at your next event.

Did you learn something new or do you have a different perspective ? I’d love to hear from you so post me a comment below…..

This entry was posted in Food and tagged . Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment or leave a trackback: Trackback URL.

Post a Comment

Your email is never published nor shared. Required fields are marked *

*
*

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>