1. Department of Chemical Engineering; Faculty of Engineering; University of Concepción; Barrio Universitario s/n; P.O. Box 160-C, Correo 3 Concepción 4030000 Chile
2. Department of Physiology; Faculty of Biological Sciences; University of Concepción; Barrio Universitario s/n; P.O. Box 160-C, Correo 3 Concepción 4030000 Chile