Hydroxycinnamoyl Esters of Malic Acid in Small Radish (Raphanus sativus L. var. sativus)

Abstract

The esters of p-coumaric, ferulic and caffeic acid with malic acid were isolated from leaves, the ester of sinapic acid with malic acid from cotyledons of Raphanus sativus plants via preparative HPLC. The esters were identified by hydrolyses and following capillary GC , by H-NMR and FAB-MS. Their concentrations in leaves and tubers were determined by gradient HPLC on reversed phase material.