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Gewählte Publikation:

Masike, K; de Villiers, A; Hoffman, EW; Brand, DJ; Causon, T; Stander, MA.
(2020): Detailed Phenolic Characterization of Protea Pure and Hybrid Cultivars by Liquid Chromatography-Ion Mobility-High Resolution Mass Spectrometry (LC-IM-HR-MS)
J AGR FOOD CHEM. 2020; 68(2): 485-502. FullText FullText_BOKU

Abstract:
In this study we report a detailed investigation of the polyphenol composition of Protea pure (P. cynaroides and P. neriifolia) and hybrid cultivars (Black beauty and Limelight). Aqueous methanol extracts of leaf and bract tissues were analyzed by ultrahigh pressure liquid chromatography hyphenated to photodiode array and ion mobility-high resolution mass spectrometric (UHPLC-PDA-IM-HR-MS) detection. A total of 67 metabolites were characterized based on their relative reversed phase (RP) retention, UV-vis spectra, low and high collision energy HR-MS data, and collisional cross section (CCS) values. These metabolites included 41 phenolic acid esters and 25 flavonoid derivatives, including 5 anthocyanins. In addition, an undescribed hydroxycinnamic acid-polygalatol ester, caffeoyl-O-polygalatol (1,5-anhydro-[6-O-caffeoy1]-sorbitol(glucitol)) was isolated and characterized by 1D and 2D NMR for the first time. This compound and its isomer are shown to be potential chemo-taxonomic markers.
Autor/innen der BOKU Wien:
Causon Tim
BOKU Gendermonitor:


Find related publications in this database (Keywords)
proteaceae
Protea
UHPLC-MSE
ion mobility (IM) spectrometry
NMR spectroscopy
phenolics
anthocyanins
caffeoyl-O-polygalatol (1,5-anhydro-(6-O-caffeoyl]- sorbitol(glucitol))


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