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This document describes an experiment to test for proteins and amino acids using the xanthoproteic and biuret tests. The biuret test identifies proteins by producing a violet color in the presence of two or more peptide bonds. The xanthoproteic test identifies aromatic amino acids by producing a yellow color from nitration of aromatic rings. The tests showed gelatine was positive for biuret and negative for xanthoproteic, identifying it as unknown A. Tyrosine was negative for biuret and positive for xanthop

Author

Tum Tum Chong

Language

EN