P2 LAB (Protein)

• Biuret Test

  • detect peptide bonds
  • produce a purple or violet color
• Ninhydrin Test

  • detect amines or amino acids
  • produce a blue color
• Xanthoproteic Test

  • detect amino acids aromatic nucleus
  • produce dark yellow or orange
• Millon's Test

  • detect tyrosine
  • produce red/pink color
• Hopkins-Cole Test

  • detect tryptophan
  • produce purple/violet rings between conc. h2so4 and protein layer
• sakaguchi test

  • detect arginine and guadinium
  • produce red color
• lead acetate test

  • detect sulfur containing amino acids
  • produce black/brown/grey