Analysis of polyphenols and methylxantines in tea samples by means of nano-liquid chromatography utilizing capillary columns packed with core-shell particles (Articolo in rivista)

Type
Label
  • Analysis of polyphenols and methylxantines in tea samples by means of nano-liquid chromatography utilizing capillary columns packed with core-shell particles (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.chroma.2011.12.103, (literal)
Alternative label
  • C. Fanali, A. Rocco, Z. Aturki, L. Mondello, S. Fanali (2012)
    Analysis of polyphenols and methylxantines in tea samples by means of nano-liquid chromatography utilizing capillary columns packed with core-shell particles
    in Journal of chromatography (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Fanali, A. Rocco, Z. Aturki, L. Mondello, S. Fanali (literal)
Pagina inizio
  • 38 (literal)
Pagina fine
  • 44 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1234 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università Campus Biomedico; Istituto di Metodologie Chimiche; Istituto di Metodologie Chimiche; Università di Messina; Istituto di Metodologie Chimiche (literal)
Titolo
  • Analysis of polyphenols and methylxantines in tea samples by means of nano-liquid chromatography utilizing capillary columns packed with core-shell particles (literal)
Abstract
  • In this study, a rapid separation of eleven polyphenols and three methylxanthines was obtained by means of nano-liquid chromatography (nano-LC), employing a 100 ?m I.D. capillary column packed with C18 core-shell particles (2.7 ?m) for 10 cm. All compounds were baseline resolved with a step gradient elution in less than 15 min. The developed analytical method was validated and the resulting RSD% for intra-day and inter-day repeatability, related to retention time, retention factor and peak area, were below 5.1 and 5.7%. LOD and LOQ values corresponded to 0.300 and 0.625 ?g/mL, while linearity range assessed gave R2 no lower than 0.990. Then, the method was used to determine studied compounds in tea extracts. Further, the nano-LC system was coupled with a mass spectrometer to confirm the components present in real samples. Finally the results were compared with those obtained using a capillary column (100 ?m I.D. × 10 cm) packed with C18 sub-2 ?m particles, applying the same nano-LC experimental conditions (literal)
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