1. Martin-Luther-Universität Halle-Wittenberg
2. Institute of Agricultural and Nutritional Sciences
3. D-06120 Halle/Saale
4. Germany
5. Institute of Toxicology
6. Heinrich Heine University Düsseldorf
7. D-40225 Düsseldorf
8. Department of Bioorganic Chemistry
9. Leibniz Institute of Plant Biochemistry