1. Department
of Functional Biology, Facultad de Medicina, University
of Oviedo, C/Julián Claverı́a
s/n, 33006 Oviedo, Asturias, Spain
2. Department
of Microbiology and Biochemistry of Dairy Products, Instituto
de Productos Lácteos de Asturias − Consejo Superior
de Investigaciones Cientı́ficas (IPLA-CSIC), Paseo Rı́o Linares s/n, 33300 Villaviciosa, Asturias, Spain