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Items: 1 to 20 of 66

1.

Incidence of Pyrrolizidine Alkaloids in Herbal Medicines from German Retail Markets: Risk Assessments and Implications to Consumers.

Letsyo E, Jerz G, Winterhalter P, Lindigkeit R, Beuerle T.

Phytother Res. 2017 Dec;31(12):1903-1909. doi: 10.1002/ptr.5935. Epub 2017 Sep 28.

PMID:
28960556
2.

Determination of cross-reactivity of poly- and monoclonal antibodies for synthetic cannabinoids by direct SPR and ELISA.

Langer N, Steinicke F, Lindigkeit R, Ernst L, Beuerle T.

Forensic Sci Int. 2017 Nov;280:25-34. doi: 10.1016/j.forsciint.2017.09.011. Epub 2017 Sep 18.

PMID:
28942375
3.

Pyrrolizidine alkaloids in floral honeys of tropical Ghana: a health risk assessment.

Letsyo E, Jerz G, Winterhalter P, Dübecke A, von der Ohe W, von der Ohe K, Beuerle T.

Food Addit Contam Part B Surveill. 2017 Dec;10(4):300-310. doi: 10.1080/19393210.2017.1354336. Epub 2017 Jul 16.

PMID:
28701074
4.

Identification and quantification of synthetic cannabinoids in 'spice-like' herbal mixtures: Update of the German situation in early 2017.

Ernst L, Brandhorst K, Papke U, Altrogge A, Zodel S, Langer N, Beuerle T.

Forensic Sci Int. 2017 Aug;277:51-58. doi: 10.1016/j.forsciint.2017.05.019. Epub 2017 May 26.

PMID:
28601726
5.

Toxic pyrrolizidine alkaloids in herbal medicines commonly used in Ghana.

Letsyo E, Jerz G, Winterhalter P, Beuerle T.

J Ethnopharmacol. 2017 Apr 18;202:154-161. doi: 10.1016/j.jep.2017.03.008. Epub 2017 Mar 8.

PMID:
28284793
6.

Identification and quantification of synthetic cannabinoids in "spice-like" herbal mixtures: Update of the German situation for the spring of 2016.

Langer N, Lindigkeit R, Schiebel HM, Papke U, Ernst L, Beuerle T.

Forensic Sci Int. 2016 Dec;269:31-41. doi: 10.1016/j.forsciint.2016.10.023. Epub 2016 Nov 4.

PMID:
27863282
7.

Bifunctional CYP81AA proteins catalyse identical hydroxylations but alternative regioselective phenol couplings in plant xanthone biosynthesis.

El-Awaad I, Bocola M, Beuerle T, Liu B, Beerhues L.

Nat Commun. 2016 May 5;7:11472. doi: 10.1038/ncomms11472.

8.

Development and Validation of a New HPLC Method for the Determination of Biphenyl and Dibenzofuran Phytoalexins in Rosaceae.

Teotia D, Saini SS, Gaid M, Beuerle T, Beerhues L, Sircar D.

J Chromatogr Sci. 2016 Jul;54(6):918-22. doi: 10.1093/chromsci/bmw019. Epub 2016 Feb 26.

PMID:
26921892
9.

Survey of pyrrolizidine alkaloids in seven varieties of Lappula squarrosa: An alternative source of heart-healthy vegetable oil.

Letsyo E, Jerz G, Winterhalter P, Horn G, Beuerle T.

Phytochem Anal. 2016 Mar-Apr;27(2):133-9. doi: 10.1002/pca.2608.

PMID:
26895990
10.

Hyperforin production in Hypericum perforatum root cultures.

Gaid M, Haas P, Beuerle T, Scholl S, Beerhues L.

J Biotechnol. 2016 Mar 20;222:47-55. doi: 10.1016/j.jbiotec.2016.02.016. Epub 2016 Feb 10.

PMID:
26876610
11.

Molecular Cloning and Characterization of a Xanthone Prenyltransferase from Hypericum calycinum Cell Cultures.

Fiesel T, Gaid M, Müller A, Bartels J, El-Awaad I, Beuerle T, Ernst L, Behrends S, Beerhues L.

Molecules. 2015 Aug 27;20(9):15616-30. doi: 10.3390/molecules200915616.

12.

Single cell subtractive transcriptomics for identification of cell-specifically expressed candidate genes of pyrrolizidine alkaloid biosynthesis.

Sievert C, Beuerle T, Hollmann J, Ober D.

Phytochemistry. 2015 Sep;117:17-24. doi: 10.1016/j.phytochem.2015.05.003. Epub 2015 Jun 5.

PMID:
26057225
13.

O-Methyltransferases involved in biphenyl and dibenzofuran biosynthesis.

Khalil MN, Brandt W, Beuerle T, Reckwell D, Groeneveld J, Hänsch R, Gaid MM, Liu B, Beerhues L.

Plant J. 2015 Jul;83(2):263-76. doi: 10.1111/tpj.12885. Epub 2015 Jun 25.

14.

Pyrrolizidine alkaloids in herbal teas for infants, pregnant or lactating women.

Mädge I, Cramer L, Rahaus I, Jerz G, Winterhalter P, Beuerle T.

Food Chem. 2015 Nov 15;187:491-8. doi: 10.1016/j.foodchem.2015.04.067. Epub 2015 Apr 22.

PMID:
25977055
15.

Shoot cultures of Hoppea fastigiata (Griseb.) C.B. Clarke as potential source of neuroprotective xanthones.

Moon UR, Sircar D, Barthwal R, Sen SK, Beuerle T, Beerhues L, Mitra A.

J Nat Med. 2015 Jul;69(3):375-86. doi: 10.1007/s11418-015-0904-x. Epub 2015 Apr 22.

PMID:
25900046
16.

Biphenyl 4-Hydroxylases Involved in Aucuparin Biosynthesis in Rowan and Apple Are Cytochrome P450 736A Proteins.

Sircar D, Gaid MM, Chizzali C, Reckwell D, Kaufholdt D, Beuerle T, Broggini GA, Flachowsky H, Liu B, Hänsch R, Beerhues L.

Plant Physiol. 2015 Jun;168(2):428-42. doi: 10.1104/pp.15.00074. Epub 2015 Apr 10.

17.

Structural and quantitative analysis of Equisetum alkaloids.

Cramer L, Ernst L, Lubienski M, Papke U, Schiebel HM, Jerz G, Beuerle T.

Phytochemistry. 2015 Aug;116:269-282. doi: 10.1016/j.phytochem.2015.03.003. Epub 2015 Mar 27.

PMID:
25823584
18.

Pyrrolizidine alkaloids in the food chain: development, validation, and application of a new HPLC-ESI-MS/MS sum parameter method.

Cramer L, Schiebel HM, Ernst L, Beuerle T.

J Agric Food Chem. 2013 Nov 27;61(47):11382-91. doi: 10.1021/jf403647u. Epub 2013 Nov 19.

PMID:
24245544
19.

Biosynthesis of the biphenyl phytoalexin aucuparin in Sorbus aucuparia cell cultures treated with Venturia inaequalis.

Khalil MN, Beuerle T, Müller A, Ernst L, Bhavanam VB, Liu B, Beerhues L.

Phytochemistry. 2013 Dec;96:101-9. doi: 10.1016/j.phytochem.2013.09.003. Epub 2013 Sep 24.

PMID:
24074553
20.

Crematoenones - a novel substance class exhibited by ants functions as appeasement signal.

Menzel F, Blüthgen N, Tolasch T, Conrad J, Beifuß U, Beuerle T, Schmitt T.

Front Zool. 2013 Jun 6;10(1):32. doi: 10.1186/1742-9994-10-32.

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