Monday, August 3, 2009

Food tests....plz urgent?

why does protein give off a purplish - lilac precipitate when KOH is added to it? does it have any relation to its bonds and type of bonding? ...if so plz elaborate....

Food tests....plz urgent?
Under alkaline conditions substances containing two or more peptide bonds form a purple complex with copper salts in the reagent.





Sorry I can't be more specific, this is all I know.



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