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Color Changes


YT2095

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does anyone here know, what the chemical(s) or reaction that takes place, when prawns or lobsters etc... change colour from often blue grey to a redish pink when they`re heated?

it`s an irreversible reaction to my knowledge unlike most inorganic chems that often go back to their original colour on cooling.

 

this one`s been bugging me for some time now :)

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It's caused by protein denaturation on cooking. There's a protein called crustacyanin (or something like that - can't remember off the top of my head) which binds a substrate that on it's own, is orange, but when it is bound to the protein turns blue-black. When the lobster is cooked, the protein denatures, forcing the substrate back into the orange form.

 

Since the protein doesn't renature on cooling, the substrate has to remain orange.

 

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YT2095 said in post # :

it`s a bit like Gray and Grey, both are valid :)

REALLY?! i always thought grey was correct, and gray is the steryotypcal grey, big headed, big eyed alien.... or is it the other way around. i never knew both were valid for the color (and probably the species too).

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Cap'n Refsmmat said in post # :

Of course they are both valid! But how'd you get gray as a big headed big eyed alien?

lol, i watch SciFi, and all of those alien discovery channel speciels. grey is now the name of those aliens (i'll have to check to see if it's grey or gray).

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