Planta Med 2013; 79(02): 181-188
DOI: 10.1055/s-0032-1328089
Analytical Studies
Original Papers
Georg Thieme Verlag KG Stuttgart · New York

Simultaneous Determination and Characterization of Tannins and Triterpene Saponins from the Fruits of Various Species of Terminalia and Phyllantus emblica Using a UHPLC-UV-MS Method: Application to Triphala

Bharathi Avula
1   National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677, USA
,
Yan-Hong Wang
1   National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677, USA
,
Mei Wang
1   National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677, USA
,
Yun-Heng Shen
1   National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677, USA
,
Ikhlas A. Khan
1   National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677, USA
2   Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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Publikationsverlauf

received 29. Juni 2012
revised 28. Oktober 2012

accepted 30. November 2012

Publikationsdatum:
08. Januar 2013 (online)

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Abstract

Terminalia species are a rich source of tannins. Many preparations of these species are used in traditional medicine and have many different ethnobotanical applications. A simple UHPLC method was developed for the simultaneous analysis of such hydrolysable tannins and triterpene saponins from the fruit rinds of different species of Terminalia (T. chebula, T. arjuna, T. bellirica) and Phyllantus emblica. A separation by LC was achieved using a reversed-phase column and a water/acetonitrile mobile phase, both containing formic acid, using a gradient system and a temperature of 40 °C. Eight hydrolysable tannins (gallic acid, gallic acid methyl ester, corilagin, chebulagic acid, 1,2,3,6-tetra-O-galloyl-β-D-glucose, ellagic acid, chebulinic acid, and 1,2,3,4,6-penta-O-galloyl-β-D-glucose) and six triterpene saponins (arjunglucoside-I, arjunglucoside-III, chebuloside II, bellericoside, arjunetin, and arjunglucoside-II) could be separated within 20 minutes. The wavelength used for detection with the diode array detector was 254 and 275 nm for tannins and 205 nm for triterpene saponins. The method was validated for linearity, repeatability, limits of detection, and limits of quantification. The developed method is economical, fast, and especially suitable for quality control analysis of tannins and triterpene saponins in various plant samples and commercial products of Terminalia.

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