1. Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
2. Hamburg School of Food Science─Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
3. Landeslabor Schleswig-Holstein, Max-Eyth-Straße 5, 24537 Neumünster, Germany