Investigation of various adsorbents for their ability to bind aflatoxin B1 |
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Authors: | E Vekiru S Fruhauf M Sahin F Ottner G Schatzmayr R Krska |
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Institution: | 1. Christian Doppler Laboratory for Mycotoxin Research, Center for Analytical Chemistry, Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Applied Life Sciences, Konrad Lorenz Stra\e 20, 3430, Vienna, Tulln, Austria 2. Institute of Applied Geology, University of Agricultural Sciences in Vienna, Peter Jordanstra\e 70, 1190, Wien, Austria 3. Biomin GmbH, Industriestra\e 21, 3130, Herzogenburg, Austria
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Abstract: | The contamination of animal feed with mycotoxins represents a worldwide problem for the animal industry. The most applied
method for protecting animals against aflatoxicosis is the utilization of clay minerals. In the course of a research project
adsorption experiments were performed in buffer solutions in order to evaluate the ability to bind Aflatoxin B1 (AfB1) at various pH-values. In order to investigate the strength of binding, the chemisorption index was calculated. Isothermal
analysis was used to determine the values for the maximum adsorption capacity. Adsorption experiments in simulated gastrointestinal
fluid and real gastric juice were carried out. Furthermore binding capability of the materials regarding selected vitamins
was examined. Special attention was paid to the formation of AfB2a during experimental conditions. Based on the obtainedin vitro results, highly promising sorbent materials were ranked for furtherin vivo studies. Some adsorbing bentonites were also analysed mineralogically, but the results did not indicate which smectite property
influences the adsorption process for AfB1
Presented at the 28th Mykotoxin-Workshop, Bydgoszcz, Poland, May 29–31, 2006
Financial support: Christian Doppler Society |
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Keywords: | Aflatoxin B1 bentonite HSCAS charcoal adsorption |
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