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Determination of selected antioxidants in Melissae herba by isotachophoresis and capillary zone electrophoresis in the column-coupling configuration

J. Šafra, M. Pospíšilová, J. Honegr, J. Spilková

. 2007 ; 1171 (1-2) : 124-132.

Language English Country Netherlands

Persistent link   https://www.medvik.cz/link/bmc10026267

Grant support
NR8964 MZ0 CEP Register

A method utilising isotachophoresis and capillary zone electrophoresis in the column coupling configuration with UV detection at 320 nm was developed for separation and determination of five phenolic acids (rosmarinic, p-coumaric, ferulic, caffeic and chlorogenic) and flavonoid quercitrin in a methanolic extract of Melissae herba. The proposed method has been validated with correlation coefficients from 0.9842 to 0.9988, RSD values between 0.39% and 0.83% for migration times and between 0.40% and 2.05% for peak areas.

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$a Department of Analytical Chemistry, Charles University in Prague, Faculty of Pharmacy, Hradec Kralove, Czech Republic. jiri.safra@faf.cuni.cz
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$a A method utilising isotachophoresis and capillary zone electrophoresis in the column coupling configuration with UV detection at 320 nm was developed for separation and determination of five phenolic acids (rosmarinic, p-coumaric, ferulic, caffeic and chlorogenic) and flavonoid quercitrin in a methanolic extract of Melissae herba. The proposed method has been validated with correlation coefficients from 0.9842 to 0.9988, RSD values between 0.39% and 0.83% for migration times and between 0.40% and 2.05% for peak areas.
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