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Items: 1 to 20 of 197

1.

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-Dec;22(6):532-40. doi: 10.1002/pca.1314. Epub 2011 Mar 24.

PMID:
21433162
2.

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 Mar-Apr;16(2):108-19.

PMID:
15881119
3.

Dehydropyrrolizidine alkaloids in two Cryptantha species: including two new open chain diesters one of which is amphoteric.

Colegate SM, Gardner DR, Davis TZ, Betz JM, Panter KE.

Phytochem Anal. 2013 May-Jun;24(3):201-12. doi: 10.1002/pca.2400. Epub 2012 Oct 15.

PMID:
23070903
4.

Pyrrolizidine alkaloids of Echium vulgare honey found in pure pollen.

Boppré M, Colegate SM, Edgar JA.

J Agric Food Chem. 2005 Feb 9;53(3):594-600.

PMID:
15686407
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Profiling of dehydropyrrolizidine alkaloids and their N-oxides in herbarium-preserved specimens of amsinckia species using HPLC-esi(+)MS.

Colegate SM, Welsh SL, Gardner DR, Betz JM, Panter KE.

J Agric Food Chem. 2014 Jul 30;62(30):7382-92. doi: 10.1021/jf500425v. Epub 2014 Mar 28.

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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.

PMID:
15479038
11.

Pyrrolizidine alkaloids in Pulmonaria obscura.

Haberer W, Witte L, Hartmann T, Dobler S.

Planta Med. 2002 May;68(5):480-2.

PMID:
12058336
12.

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. doi: 10.1016/j.talanta.2009.08.020. Epub 2009 Aug 20.

PMID:
19836573
13.

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 1;178:136-48. doi: 10.1016/j.foodchem.2015.01.053. Epub 2015 Jan 14.

PMID:
25704694
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Tissue distribution, core biosynthesis and diversification of pyrrolizidine alkaloids of the lycopsamine type in three Boraginaceae species.

Frölich C, Ober D, Hartmann T.

Phytochemistry. 2007 Apr;68(7):1026-37. Epub 2007 Feb 22.

PMID:
17320124
18.

Recognition of pyrrolizidine alkaloid esters in the invasive aquatic plant Gymnocoronis spilanthoides (Asteraceae).

Boppré M, Colegate SM.

Phytochem Anal. 2015 May-Jun;26(3):215-25. doi: 10.1002/pca.2555. Epub 2015 Jan 27.

PMID:
25645745
19.

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;28(3):332-47. doi: 10.1080/19440049.2010.521772. Epub 2010 Nov 12.

PMID:
21082464
20.
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