1. Research Group of Bioprocesses and Bioproducts, Dept. of Food ResearchSchool of ChemistryUniv. Autónoma de Coahuila Saltillo 25280 Mexico
2. Facultad de Ciencias QuímicasUniv. Autónoma de Chihuahua Circuito Universitario S/N, Campus Universitario II Chihuahua 31125 Mexico