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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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HPLC method development and validation for biological active substances determination in nutraceuticals
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Sklenářová, Hana (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Jakub Fibigr Supervisor: Doc. RNDr. Dalibor Šatinský Ph.D. Title of Diploma Thesis: HPLC method development and validation for biological active substances determination in nutraceuticals A new HPLC method was developed and validated for the simultaneous determination of resveratrol and polydatin in nutraceuticals and the method was used for determination of these compounds in nutraceuticals A1 Resveratrol 800 RX (A1 Pharma s.r.o.), Evelor Resveratrol 50 mg (Medochemie Ltd), Walmark Lecithin s resveratrolem (Walmark), Resveratrol MAX (Tachyon), Resveratrol antiaging (TheraTech), Indonal Partner for Woman (Synergia). The chromatographic separation was performed using Ascentis Express ES-Cyano column (100 x 3.0 mm; 2.7 μm) Supelco Analytical. The mobile phase consisted of a mixture of acetonitrile/0.5% acetic acid 20:80 with flow rate of 1.0 ml/min, the detection wavelength was 305 nm using DAD detector, with a temperature of 60o C and pressure of 20.0 MPa. Keywords: HPLC, resveratrol, piceid, phytoalexin, antioxidant, nutraceuticals
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