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Publications about Alkaloids

Alkaloids are usually not intentionally added to foods, they occur naturally in plants.

Even natural plant constituents are not always harmless for humans – prominent examples are pyrrolizidine or tropane alkaloids.

See our publications about alkaloids here:

A. Dübecke
100% natural but still unwanted – Pyrrolizidine Alkaloids in Food
eFOOD-Lab International, Issue 04/2020, page 20-23, Dec. (2020)

C. Gottschalk, A. Huckauf, A. Dübecke, F. Kaltner, M. Zimmermann, I. Rahaus, T. Beuerle
Chemical fingerprinting identifies Echium vulgare, Eupatorium cannabinum and Senecio spp. as plant species mainly responsible for pyrrolizidine alkaloids in bee-collected pollenUncertainties in the determination of pyrrolizidine alkaloid levels in naturally contaminated honeys and comparison of results obtained by different analytical approaches,  Food additives and contaminants, Jun 2018, link :

C. Kast, V. Kilchenmann, H. Reinhard, B. Droz, M.A. Lucchetti, A. Dübecke, G. Beckh, O. Zoller
Chemical fingerprinting identifies Echium vulgare, Eupatorium cannabinum and Senecio spp. as plant species mainly responsible for pyrrolizidine alkaloids in bee-collected pollen, Food additives and contaminants, Sep 2017,

E. Letsyo, G. Jerz, P. Winterhalter, A. Dübecke, W. von der Ohe, K. von der Ohe, T. Beuerle
Pyrrolizidine alkaloids in floral honeys of tropical Ghana: a health risk assessment, Food additives and contaminants, Jul 2017

A. Dübecke, C. Lüllmann, G. Beckh
DLR, Mai, 200-206 (2017)

A. Dübecke, C. Lüllmann, G. Beckh
Tropanalkaloide in Zerealien und Kräutertee
FoodLab 1, 20-22 (2017)

M. A. Lucchetti, G. Glauser, V. Kilchenmann, A. Dübecke, G. Beckh, C. Praz, C. Kast
Pyrrolizidine alkaloids from Echium vulgare in honey originate primarily from floral nectar
Journal of Agricultural and Food Chemistry, DOI: 10.1021/acs.jafc.6b02320 ( May 31, 2016)

A. Dübecke
Pyrrolizidinalkaloide – ein weltweites Problem?
Vortrag GDL-Honigfachtagung Stuttgart (Feb 2016)

J. A. Shimshoni, A. Dübecke, P. P. J. Mulder, O. Cuneah, S. Barel
Pyrrolizide and tropane alkaloids in teas and herbal teas, peppermint, rooibos and chamomile in the Israeli market
Food additives and contaminants: Part A, DOI: 10.1080/19440049.2015.1087651 (2015)

M. Mühlemann, D. Gille, C. Kast, A. Dübecke
Keine Pyrrolizidinalkaloide in Schweizer Milch
Alimenta, 01/74, 24 (2015)

C. Kast, A. Dübecke, V. Kilchenmann, K. Bieri, M. Böhlen, O. Zoller, G. Beckh, C. Lüllmann
Analysis of Swiss honeys for pyrrolizidine alkaloids
Journal of Apicultural Research 53 (1), 75-83 (2014)

A. Dübecke, M. Lambert und C. Lüllmann
Pyrrolizidinalkaloide, Kontamination von pflanzlichen Lebensmitteln
DLR, September, 481-484 (2013)

A. Dübecke, T. Beuerle, S. Ronczka, K. Speer, P. Wessel, G. Beckh, C. Lüllmann
Collection of Pyrrolizidine Alkaloid Plants & Pollen relevant for Honey Production
online-Veröffentlichung, (2012)

T. Wiezorek
Pyrrolizidine Alkaloids, residues and GMO-Recent Developments
Havanna, 4th Cuban Beekeeping Congress, 4.4. (2012)

A. Dübecke
Pyrrolizidinalkaloide-aktueller Stand
Vortrag GDL-Symposium Honig und Honigtechnologie Stuttgart, 1.-2.Dec. (2011)

A. Dübecke, G. Beckh, C. Lüllmann
Pyrrolizidine Alkaloids in Bee Pollen
Posterpräsentation Erlangen-Nürnberg, 10.-12.Dec. (2011)

A. Dübecke, G. Beckh, C. Lüllmann
Interrelationship between concentrations of the Pyrrolizidine Alkaloid Echimidine and amounts of Echium-Pollen in honey
Posterpräsentation Apimondia, Buenos Aires, 21.-25.Sep. (2011)

A. Dübecke, G. Beckh and C. Lüllmann
Pyrrolizidine alkaloids in honey and bee pollen
Food additives and contaminants, Vol. 28, No. 3, March, 348-358 (2011)

C. Kast, M. Mühlemann, A. Dübecke, G. Beckh, C. Lüllmann
Pyrrolizidin-Alkaloide in der Natur und ihre Bedeutung für Lebensmittel
Schweizerische Bienenzeitung, 10, 14-16 (2010)

A. Dübecke
Pyrrolizidinalkaloide in Honig – Herkunft und Analyse
Lebensmittelchemie, 64, 133 (2010)


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