| The photochemistry of ninhydrin in benzene and water was studied by laser flash photolysis and electron paramagnetic resonance. |
| In general the frequency of calibration runs depends on the stability of the ninhydrin reagent and the analytical system. |
| In the form of an acid hydrolyzate, also positive in the Elson-Morgan's reaction and ninhydrin reaction. |
| Standards were visualized by ninhydrin reagent and the chromatogram containing phosphorylated proteins was autoradiographed. |
| Total free amino acids in the leaf extracts and in the phloem exudate were analysed with the ninhydrin reagent. |
| Amino acid analyzer or HPLC equipment with ion exchange column, device for ninhydrin, post column derivatization and photometric detector. |
