1. Phytochemical-Ecology Laboratory,
Department of Basic Sciences, Faculty of Sciences, University of Bío-Bío, Andres Bello Avenida s/n,
Chillán, Chile
2. Laboratorio
de Fitoquímica,
Unidad UBIPRO, FES-Iztacala, Universidad Nacional Autónoma de México (UNAM), Mexico DF, Mexico
3. ESPM Department, University of California at Berkeley, Berkeley, California,
United States