1. Department of Food Science, University of Napoli 'Federico II', via Università 100, 80055 Portici, Napoli, Italy
2. Faculty of Pharmacy, University of València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
3. Norwegian Veterinary Institute, Section for Chemistry and Toxicology, Ullevålsveien 68, 0454 Oslo, Norway