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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Biologija / Biology (N010)
Author(s): Kornyšova, Olga;Stanius, Žydrūnas;Obelevičius, Kęstutis;Ragažinskienė, Ona;Skrzydlewska, E;Maruška, Audrius
Title: Capillary zone electrophoresis method for determination of bitter (alpha- and beta-) acids in hop (Humulus lupulus L.) cone extracts
Is part of: Advances in medical sciences. Bialystok : Medical university of Bialystok, 2009, Vol. 54, iss. 1
Extent: p. 41-46
Date: 2009
Keywords: Paprastasis apynys;Kapiliarinė elektrofarezė;Karčiosios rūgštys;Capillary zone electrophoresis;Conductometric titration method;Hop bitter acids;Humulones
Abstract: Humulus lupulus (H. lupulus), more commonly known as hop, is a member of the Cannabaceae family with male and female flowers on separate plants. It is native in Europe including Lithuania, Asia and North America. Hop has been recognized as a medicinal plant for centuries, nevertheless different medicinal activities of hop are currently investigated and discovered. An important class of hop compounds is the hop acids, which are classified as alpha-acids and beta-acids. Different varieties of hops vary in amount and composition of hop acids. METHODS: Simple capillary zone electrophoresis method has been optimized and applied for the analysis of hop acids in hop cone extracts. RESULTS: With this method the analysis takes ca. 10 min. Repeatability for migration times and peak areas expressed as relative standard deviation were up to 0.21% and 5.96%, respectively. CONCLUSIONS: Comparative results of capillary zone electrophoretic analysis of extracts of different hop varieties and conductometric titration, as a standard method for determination of alpha-acids, are presented. Both methods provide consistent results, however capillary zone electrophoresis is capable of separating co- form of humulones from other forms
Affiliation(s): Biochemijos katedra
Botanikos sodas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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