Article (Scientific journals)
APPLICATION OF DESIGN OF EXPERIMENTS AND DESIGN SPACE METHODOLOGY FOR THE HPLC-UV SEPARATION OPTIMIZATION OF APORPHINE ALKALOIDS FROM LEAVES OF Spirospermum penduliflorum THOUARS
Rafamantanana, Mamy H.; Debrus, Benjamin; Raoelison, Guy et al.
2012In Journal of Pharmaceutical and Biomedical Analysis, 62, p. 23-32
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Keywords :
Design of experiments; Spirospermum penduliflorum; quantitative determination; validation; dicentrine; design-space
Abstract :
[en] Spirospermum penduliflorum Thouars (Menispermaceae) is an endemic species of Madagascar traditionally used as vasorelaxant. Recently, two aporphine alkaloids known to possess antihypertensive activity (dicentrine and neolitsine) were isolated and identified from the leaves of this plant. In the present study, a HPLC-UV method allowing the separation of all alkaloids and the quantification of dicentrine in the alkaloidic extract of leaves was developed using design of experiments and design space methodology. Three common chromatographic parameters (i.e. the mobile phase pH, the initial proportion of methanol and the gradient slope) were selected to construct a full factorial design of 36 experimental conditions. The times at the beginning, the apex (i.e. the retention time) and the end of each peak were recorded and modelled by multiple linear equations. The corresponding residuals were normally distributed which confirmed that the models can be used for the prediction of the retention times and to optimize the separation. The optimal separation was predicted at pH 3, with a gradient starting at 32% of methanol and a gradient slope of 0.42%/min. Good agreement was obtained between predicted and experimental chromatograms. The method was also validated using total error concept. Using the accuracy profile approach, validation results gave a LOD and LOQ for dicentrine of 3 µg/ml and 10 µg/ml, respectively. A relative standard deviation for intermediate precision lower than 10% was obtained. This method was found to provide accurate results in the concentration range of 10 µg/ml to 75 µg/ml of dicentrine and is suitable for routine analysis.
Disciplines :
Pharmacy, pharmacology & toxicology
Author, co-author :
Rafamantanana, Mamy H.
Debrus, Benjamin ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Raoelison, Guy
Rozet, Eric ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Lebrun, Pierre ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Uverg-Ratsimamanga, S.
Hubert, Philippe  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Quetin-Leclercq, J.
Language :
English
Title :
APPLICATION OF DESIGN OF EXPERIMENTS AND DESIGN SPACE METHODOLOGY FOR THE HPLC-UV SEPARATION OPTIMIZATION OF APORPHINE ALKALOIDS FROM LEAVES OF Spirospermum penduliflorum THOUARS
Publication date :
2012
Journal title :
Journal of Pharmaceutical and Biomedical Analysis
ISSN :
0731-7085
eISSN :
1873-264X
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
62
Pages :
23-32
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2012

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