Give the ideal observation for the positive results of the following samples to complete the table below. Write NO RXN if the sample gives negative result for the given tests BIURET XANTHOPROTEIC NINHYDRIN SULFUR SAMPLES TEST TEST TEST TEST Formation of violet- Cysteine NO RXN colored product Formation of red- Tryptophan NO RXN colored solution Formation of Formation of violet- colored product Keratin black precipitate B- Alanine NO RXN NO RXN

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