Objective: To characterize soluble proteins present in Lepidium peruvianum G. Chacon ‘maca’ root by both unidimensional and bidimensional electrophoresis. Design: Observational and cross-sectional type study. Setting: Alberto Guzman Barron Biochemistry and Nutrition Research Center, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Materials: Roots of Lepidium peruvianum G. Chacon ‘maca’ white, yellow and purple ecotypes, collected in Junin and obtained from Universidad Nacional del Centro del Peru. Methods: Soluble total proteins extraction with an antioxidant solution and characterization by both unidimensional and bidimensional electrophoresis were done. Main outcome measures: Soluble protein number, molecular weight and most abundant proteins’ isoelectrical points. Results: The unidimensional electrophoretic analysis showed predominance of two prote...