1. Nutrition and Health R&D, Roquette, 1 rue de la Haute Loge, 62136 Lestrem, France
2. ProDigest, Technologiepark 82, 9052 Zwijnaarde, Belgium
3. Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium