Andean tubers Calidad de vida Color Comparative studies Correlation methods Different sizes Dry matter Dry matters Food technology Instrumental analysis Instrumental methods Oxalis tuberosa Pacientes con discapacidad Placas alineadoras Sensory analysis Sensory characteristics Staple food Texture descriptors Texture profile analysis Texture properties Textures Tuber crops Tubes (components) calidad de vida pacientes con discapacidad placas alineadoras