alkaline solution + dilute cupric sulfate + protein= ?

Jon pettersen jonp at
Thu Oct 5 08:12:39 EST 1995

I dont know if this is the right place to mail this question, but I'll 
give it a try and hope someone can help me. 

Alkaline solution  + diluted cupric sulfate, if you add some protein you 
get a violet or pink colour.

What is really happening in this process.

I would be so gratefulif anyone culd give me an answer.

Jon Pettersen.

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