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Biuret Test for Proteins

Biuret Test for Proteins

C039/1304

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Credit

TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY

Caption

Biuret test for proteins. The Biuret reagent contains copper(II) sulfate (CuSO4) and sodium hydroxide (NaOH), with potassium sodium tartrate (KNaC4H4O6) added to stabilize copper ions. Here blue-coloured Biuret reagent was added to a solution of albumin (egg white) in a beaker. The solution turned violet (deep purple), indicating presence of proteins.

Release details

Model release not required. Property release not required.

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