Volume 21, Issue 5 p. 428-433
Research Article

Development and Validation of a Micellar Electrokinetic Chromatography Method for Quantitative Determination of Butenolides in Piper malacophyllum (C. Presl) C. DC.

Alberto de Oliveira

Alberto de Oliveira

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil

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Claudinei A. Silva

Claudinei A. Silva

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil

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Adalberto M. Silva

Adalberto M. Silva

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil

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Marina F.M. Tavares

Marina F.M. Tavares

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil

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Massuo J. Kato

Corresponding Author

Massuo J. Kato

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil

Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, BrazilSearch for more papers by this author
First published: 25 August 2010
Citations: 4

Abstract

Introduction – A large number of natural and synthetic compounds having butenolides as a core unit have been described and many of them display a wide range of biological activities. Butenolides from P. malacophyllum have presented potential antifungal activities but no specific, fast, and precise method has been developed for their determination.

Objective – To develop a methodology based on micellar electrokinetic chromatography to determine butenolides in Piper species.

Methodology – The extracts were analysed in an uncoated fused-silica capillaries and for the micellar system 20 mmol/L SDS, 20% (v/v) acetonitrile (ACN) and 10 mmol/L STB aqueous buffer at pH 9.2 were used. The method was validated for precision, linearity, limit of detection (LOD) and limit of quantitation (LOQ) and the standard deviations were determined from the standard errors estimated by the regression line.

Results – A micellar electrokinetic chromatography (MEKC) method for determination of butenolides in extracts gave full resolution for 1 and 2. The analytical curve in the range 10.0–50.0 µg/mL (r2 = 0.999) provided LOD and LOQ for 1 and 2 of 2.1/6.3 and 1.1/3.5 µg/mL, respectively. The RSD for migration times were 0.12 and 1.0% for peak area ratios with 100.0 ± 1.4% of recovery.

Conclusions – A novel high-performance MEKC method developed for the analysis of butenolides 1 and 2 in leaf extracts of P. malacophyllum allowed their quantitative determined within an analysis time shorter than 5 min and the results indicated CE to be a feasible analytical technique for the quantitative determination of butenolides in Piper extracts. Copyright © 2010 John Wiley & Sons, Ltd.