2010
DOI: 10.1016/j.chroma.2009.10.068
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Isolation of phenolic compounds from hop extracts using polyvinylpolypyrrolidone: Characterization by high-performance liquid chromatography–diode array detection–electrospray tandem mass spectrometry

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Cited by 102 publications
(79 citation statements)
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“…Furthermore, gas chromatography and electromigration techniques, such as capillary zone electrophoresis or capillary electrochromatography, can be employed as well (Molnár-Perl and Füzfai 2005). To analyze hops and beer samples, the coupling of HPLC with mass spectrometry (MS) using electrospray ionization or atmospheric pressure chemical ionization in both polarity modes is vastly reported in the literature (Magalhaes et al 2007(Magalhaes et al , 2008(Magalhaes et al , 2010Rong et al 2000;Stevens et al 1999;Maragou et al 2008). On the other hand, easy-to-use methods based in simple HPLC-UV for the detection of hop's prenylflavonoids have not been so extensively developed; only one work devoted to the analysis of XN in beer based on cloud point extraction by using HPLC-UV has been recently published (Chen et al 2010), but isoxanthohumol (IXN) and 8PN were not studied in this paper.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, gas chromatography and electromigration techniques, such as capillary zone electrophoresis or capillary electrochromatography, can be employed as well (Molnár-Perl and Füzfai 2005). To analyze hops and beer samples, the coupling of HPLC with mass spectrometry (MS) using electrospray ionization or atmospheric pressure chemical ionization in both polarity modes is vastly reported in the literature (Magalhaes et al 2007(Magalhaes et al , 2008(Magalhaes et al , 2010Rong et al 2000;Stevens et al 1999;Maragou et al 2008). On the other hand, easy-to-use methods based in simple HPLC-UV for the detection of hop's prenylflavonoids have not been so extensively developed; only one work devoted to the analysis of XN in beer based on cloud point extraction by using HPLC-UV has been recently published (Chen et al 2010), but isoxanthohumol (IXN) and 8PN were not studied in this paper.…”
Section: Introductionmentioning
confidence: 99%
“…The prenylated chalcone xanthohumol ((E)-1-[2,4-dihydroxy-6-methoxy-3-(3-methylbut-2-enyl)phenyl]-3-(4--hydroxyphenyl)prop-2-en-1-one) is the principal prenylfl avonoid of the female infl orescences (hops) of the hop plant Humulus lupulus L. (1,2). Hops are used in beer production to add bitt erness and fl avour, whereby beer is the main human dietary source of xanthohumol (3,4).…”
Section: Introductionmentioning
confidence: 99%
“…Z výsledků srovnání celkové koncentrace stilbenů a alfa-kyselin vyplývá, že čím menší koncentraci alfa-kyselin odrůda obsahuje, tím je větší obsah stilbenů. Magalhãese et al (2010) publikoval práci, ve které popsal separaci katechinu a epikatechinu a dále objasnil strukturu více než 30 polyfenolických látek zahrnujících kromě proanthokyanidinů také např. xanthohumol a kvercetin.…”
Section: Metody Pro Ověřování Autenticity Odrůd Chmele -účInný Nástrounclassified