Biuret test

Biuret test

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Biuret test. The purple ring at the top of the test tube indicates a positive result. The biuret test is a biochemical test for the presence of proteins (peptide bonds) in a solution. A positive result occurs when a purple ring appears after addition of copper (II) sulphate in alkaline solution.

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Keywords: biochemical, biochemistry, biuret test, chemical, chemicals, chemistry, detection, education, experiment, glassware, indicator, liquid, positive, protein, proteins, purple, rack, reaction, result, school, solution, stand, tube

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