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Thymol

thymolbehandlung_20170128

In the 1990s, the Bee Research Centre took part in a screening programme testing the potential effectiveness of over 100 essential oils and essential oil components against the varroa mite. Although sage, hyssop and thyme oils proved interesting, only thymol has been used in acaricide products. Thymol treatments require little effort, and there are a variety of preparations on the market. The advantages and drawbacks of thymol use are listed in the articles "Apilife VAR: A new varroacide with thymol as the main ingredient" and "THYMOVAR for Varroa control".

Use of essential oils for the control of Varroa jacobsoni (Oud.) in honey bee colonies (PDF, 1 MB, 20.01.2017)
A. Imdorf, S. Bogdanov, R. Ibáñez Ochoa, N. W. Calderone (1999)

Publikationen Cédric Brügger

Portmann R., Sousa R., Brügger C., Egger C.
Qualität vor Quantität: Protein Bioverfügbarkeit und Messung der Verdaulichkeit.
In: Forum MIlchveranstaltung. 28. November, Liebefeld. 2023, 1-18.

Egger C., Brügger C.
Determination of alkaline phosphatase activity, fluorimetric microplate method: Milk and milk products.
In: ISO/IDF Webinar on Alkaline Phosphatase. 14 November, online. 2023, 1-12.

Brügger C., Descloux-Kaeser L., Widmer J., Berger T., Jäger M. L., Egger C.
Direct labeling of milk cells without centrifugation for counting total and differential somatic cells using flow cytometry.
Journal of Dairy Science, 105, (11), 2022, 8705-8717.

Egger C., Brügger C., Widmer J., Berger T.
ANTOINETTE - DNA and antibody stained total and differential somatic cell counting in milk using flow cytometry.
In: Analytica conference. 21 March, Hrsg. AEOS, Roma. 2019, 1-18.

Egger L., Schlegel P., Baumann C., Stoffers H., Guggisberg D., Brügger C., Dürr D., Stoll P., Vergères G., Portmann R.
Mass spectrometry data of in vitro and in vivo pig digestion of skim milk powder.
Data in Brief, 21, (December), 2018, 911-917.

Egger C., Brügger C., Spahni A., Berger T., Boitelle C., Ghezzal H.
Validation of Alkaline Phosphatase Fluorometric Microwell Assay.
In: Analytical Week ISO/IDF. 23 April, Dublin. 2018, 1-14.

Gille D., Walther B., Badertscher R., Bosshart A., Brügger C., Brühlhart M., Gauch R., Noth P., Vergères G., Egger L.
Detection of lactose in products with low lactose content.
International Dairy Journal, 83, 2018, 17-19.

Egger L., Schlegel P., Baumann C., Stoffers H., Guggisberg D., Brügger C., Dürr D., Stoll P., Vergères G., Portmann R.
Physiological comparability of the harmonized INFOGEST in vitro digestion method to in vivo pig digestion.
Food Research International, 102, 2017, 567-574.

Egger L., Amrein R., Brügger C., Goy D., Winkler H., Messerli-Hostettler B., Spahni A., Berger T.
Alkalische Phosphatase Aktivität in Käse als Indikator für Milch-Pasteurisation.
FOOD-Lab International, 2, 2016, 22-24.

Egger L., Brügger C., Ghezzal H., Berger T.
Current status in the development of a microwell method for the analysis of alkaline phosphatase activity.
In: Workshop EURL. 7– 9 octobre, Hrsg. Anses, Maison-Alfort, Paris. 2015, 1-20.

Apilife VAR: A new varroacide with thymol as the main ingredient (PDF, 103 kB, 20.01.2017)
A. Imdorf, S. Bogdanov, V. Kilchenmann, C. Maquelin (1994)

"THYMOVAR" for Varroa control (PDF, 75 kB, 27.01.2017)
F. Bollhalder (1998)


Although the use of thymol leads to residues in the wax and honey, these are negligible from a toxicological viewpoint. Since about 2008 the use of thymol-based products has been declining in Switzerland, and beekeepers making use of these products have tended to experience greater winter losses than those using e.g. formic acid.

Thymol residues in wax and honey after Apilife VAR treatment (PDF, 757 kB, 14.09.2016)
S. Bogdanov, A. Imdorf, V. Kilchenmann (1998) 

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