Chromatographic determination of iridoids in Stachys recta, and investigation of inorganic elements by X-ray fluorescence spectroscopy

Erzsébet Háznagy-Radnai, Klára Pintye-Hódi, Szilvia Czigle, Tamás Martinek, Gábor Janicsák, Imre Máthé, István Eros

Research output: Article

2 Citations (Scopus)

Abstract

We have isolated five iridoids (harpagide, acetylharpagide, harpagoside, ajugoside, and aucubin) from St. recta L. by a combination of chromatographic methods-NP-TLC, RP-HPLC, and TLC-densitometry. The isolated iridoids were identified on the basis of their physical and spectroscopic properties. Basic information about their structures was obtained from their NMR spectra. X-ray fluorescence spectroscopy can be used for direct determination of inorganic elements in the leaves, stems, and inflorescences of Stachys recta L. We identified K, Ca, Mo, Fe, Co, Ir, Ga, Tl, and S.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalJournal of Planar Chromatography - Modern TLC
Volume21
Issue number1
DOIs
Publication statusPublished - febr. 1 2008

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry

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