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273 related items for PubMed ID: 14752559

  • 1. Simultaneous analysis of hepatotoxic pyrrolizidine alkaloids and N-oxides in comfrey root by LC-ion trap mass spectrometry.
    Wuilloud JC, Gratze SR, Gamble BM, Wolnik KA.
    Analyst; 2004 Feb; 129(2):150-6. PubMed ID: 14752559
    [Abstract] [Full Text] [Related]

  • 2. Determination of pyrrolizidine alkaloids in comfrey by liquid chromatography-electrospray ionization mass spectrometry.
    Liu F, Wan SY, Jiang Z, Li SF, Ong ES, Osorio JC.
    Talanta; 2009 Dec 15; 80(2):916-23. PubMed ID: 19836573
    [Abstract] [Full Text] [Related]

  • 3. Investigation of pyrrolizidine alkaloids and their N-oxides in commercial comfrey-containing products and botanical materials by liquid chromatography electrospray ionization mass spectrometry.
    Altamirano JC, Gratz SR, Wolnik KA.
    J AOAC Int; 2005 Dec 15; 88(2):406-12. PubMed ID: 15859063
    [Abstract] [Full Text] [Related]

  • 4. Characteristic ion clusters as determinants for the identification of pyrrolizidine alkaloid N-oxides in pyrrolizidine alkaloid-containing natural products using HPLC-MS analysis.
    Ruan J, Li N, Xia Q, Fu PP, Peng S, Ye Y, Lin G.
    J Mass Spectrom; 2012 Mar 15; 47(3):331-7. PubMed ID: 22431459
    [Abstract] [Full Text] [Related]

  • 5. A rapid cleanup method for the isolation and concentration of pyrrolizidine alkaloids in comfrey root.
    Gray DE, Porter A, O'Neill T, Harris RK, Rottinghaus GE.
    J AOAC Int; 2004 Mar 15; 87(5):1049-57. PubMed ID: 15493660
    [Abstract] [Full Text] [Related]

  • 6. Improved method for extraction and LC-MS analysis of pyrrolizidine alkaloids and their N-oxides in honey: application to Echium vulgare honeys.
    Betteridge K, Cao Y, Colegate SM.
    J Agric Food Chem; 2005 Mar 23; 53(6):1894-902. PubMed ID: 15769110
    [Abstract] [Full Text] [Related]

  • 7. Safety assessment of food and herbal products containing hepatotoxic pyrrolizidine alkaloids: interlaboratory consistency and the importance of N-oxide determination.
    Cao Y, Colegate SM, Edgar JA.
    Phytochem Anal; 2008 Mar 23; 19(6):526-33. PubMed ID: 18618436
    [Abstract] [Full Text] [Related]

  • 8. Improved method for isolation of lycopsamine from roots of comfrey (Symphytum officinale).
    Janes D, Kalamar B, Kreft S.
    Nat Prod Commun; 2012 Jul 23; 7(7):861-2. PubMed ID: 22908565
    [Abstract] [Full Text] [Related]

  • 9. Simultaneous characterization of pyrrolizidine alkaloids and N-oxides in Gynura segetum by liquid chromatography/ion trap mass spectrometry.
    Qi X, Wu B, Cheng Y, Qu H.
    Rapid Commun Mass Spectrom; 2009 Jan 23; 23(2):291-302. PubMed ID: 19072862
    [Abstract] [Full Text] [Related]

  • 10. Solid-phase extraction and LC-MS analysis of pyrrolizidine alkaloids in honeys.
    Beales KA, Betteridge K, Colegate SM, Edgar JA.
    J Agric Food Chem; 2004 Oct 20; 52(21):6664-72. PubMed ID: 15479038
    [Abstract] [Full Text] [Related]

  • 11. Solid-phase extraction and HPLC-MS profiling of pyrrolizidine alkaloids and their N-oxides: a case study of Echium plantagineum.
    Colegate SM, Edgar JA, Knill AM, Lee ST.
    Phytochem Anal; 2005 Oct 20; 16(2):108-19. PubMed ID: 15881119
    [Abstract] [Full Text] [Related]

  • 12. Pyrrolizidine alkaloids in honey: comparison of analytical methods.
    Kempf M, Wittig M, Reinhard A, von der Ohe K, Blacquière T, Raezke KP, Michel R, Schreier P, Beuerle T.
    Food Addit Contam Part A Chem Anal Control Expo Risk Assess; 2011 Mar 20; 28(3):332-47. PubMed ID: 21082464
    [Abstract] [Full Text] [Related]

  • 13. Is comfrey root more than toxic pyrrolizidine alkaloids? Salvianolic acids among antioxidant polyphenols in comfrey (Symphytum officinale L.) roots.
    Trifan A, Opitz SEW, Josuran R, Grubelnik A, Esslinger N, Peter S, Bräm S, Meier N, Wolfram E.
    Food Chem Toxicol; 2018 Feb 20; 112():178-187. PubMed ID: 29288756
    [Abstract] [Full Text] [Related]

  • 14. Determination of hepatotoxic pyrrolizidine alkaloids by on-line high performance liquid chromatography mass spectrometry with an electrospray interface.
    Lin G, Zhou KY, Zhao XG, Wang ZT, But PP.
    Rapid Commun Mass Spectrom; 1998 Feb 20; 12(20):1445-56. PubMed ID: 9796532
    [Abstract] [Full Text] [Related]

  • 15. Specific Distribution of Pyrrolizidine Alkaloids in Floral Parts of Comfrey (Symphytum officinale) and its Implications for Flower Ecology.
    Stegemann T, Kruse LH, Brütt M, Ober D.
    J Chem Ecol; 2019 Feb 20; 45(2):128-135. PubMed ID: 30054770
    [Abstract] [Full Text] [Related]

  • 16. LC-MS/MS Evaluation of Pyrrolizidine Alkaloids Profile in Relation to Safety of Comfrey Roots and Leaves from Polish Sources.
    Kimel K, Godlewska S, Gleńsk M, Gobis K, Ośko J, Grembecka M, Krauze-Baranowska M.
    Molecules; 2023 Aug 21; 28(16):. PubMed ID: 37630423
    [Abstract] [Full Text] [Related]

  • 17. Characterization and screening of pyrrolizidine alkaloids and N-oxides from botanicals and dietary supplements using UHPLC-high resolution mass spectrometry.
    Avula B, Sagi S, Wang YH, Zweigenbaum J, Wang M, Khan IA.
    Food Chem; 2015 Jul 01; 178():136-48. PubMed ID: 25704694
    [Abstract] [Full Text] [Related]

  • 18. Analysis of herbal teas made from the leaves of comfrey (Symphytum officinale): reduction of N-oxides results in order of magnitude increases in the measurable concentration of pyrrolizidine alkaloids.
    Oberlies NH, Kim NC, Brine DR, Collins BJ, Handy RW, Sparacino CM, Wani MC, Wall ME.
    Public Health Nutr; 2004 Oct 01; 7(7):919-24. PubMed ID: 15482618
    [Abstract] [Full Text] [Related]

  • 19. Simultaneous investigation of sesquiterpenes, pyrrolizidine alkaloids and N-oxides in Butterbur (Petasites hybridus) with an offline 2D-combination of HPLC-UV and LC-MMI-ToF-MS.
    Aydın AA, Letzel T.
    J Pharm Biomed Anal; 2013 Nov 01; 85():74-82. PubMed ID: 23906985
    [Abstract] [Full Text] [Related]

  • 20. Detection of high levels of pyrrolizidine-N-oxides in the endangered plant Cryptantha crassipes (Terlingua Creek cat's-eye) using HPLC-ESI-MS.
    Williams MT, Warnock BJ, Betz JM, Beck JJ, Gardner DR, Lee ST, Molyneux RJ, Colegate SM.
    Phytochem Anal; 2011 Nov 01; 22(6):532-40. PubMed ID: 21433162
    [Abstract] [Full Text] [Related]

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