Abstract

One of the ninhydrin-negative alanine conjugates isolated from pea seedlings was identified as N- malonyl- D- alanine . The identification of this conjugate was carried out by a comparison of its gas-liquid chromatographic and mass spectrometric properties, and its nuclear magnetic resonance and infrared spectra with those of synthetic N- malonyl- D- alanine . The alanine in the conjugate was shown to be present as the D-isomer by enzymatic and chromatographic analyses.

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