La  La técnica de análisis electroquímico empleó un coulombímetro y un potenciostato de la Universidad Nacional de Colombia, 
A naturally occurring acid found in many fruit juices, citric acid was quantified using external standards and high-performance liquid chromatography (HPLC). Eight orange juice samples were analyzed ranging in concentrations from 36.0 to 427 mg/oz of citric acid. The California navel orange had the highest citric acid concentration, followed by the 100% orange juices, the orange flavored juices, and with the lowest concentration, Nestle’s Juicy Juice, the 100% mixed fruit juice