How is ascending paper chromatography used to identify amino acids?

Process used to identify amino acids:

1. In ascending paper chromatography, amino acid identification develops separated amino acid positions as the sample mixture travels with the rising solvent front.
2. Ninhydrin makes these amino acid positions visible, and their Rf values are matched with known amino acid standards.
3. The amino acid mixture is applied as a small baseline spot on the chromatography paper.
4. As the solvent front rises, amino acids migrate differently because their solubility and paper attraction are not the same.
5. The separated positions show where each amino acid travelled on the chromatogram.
6. Ninhydrin reacts with amino acids and produces visible colored spots after development.
7. Known amino acid standards are run under the same conditions for comparison.
8. Matching Rf values help identify which amino acids are present in the sample.

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