1. The Norwegian University of Life Science (UMB), PO Box 5003, N-1432 Ås, Norway
2. Matforsk, Norwegian Food Research Institute, Osloveien 1, N-1430 Ås, Norway
3. Plate-forme Protéomique, INRA site de Theix, 63122 Saint-Genès Champanelle, France
4. UR454 Microbiologie-Equipe QuaSA, INRA site de Theix, 63122 Saint-Genès Champanelle, France