The system consists of electronic measuring equipment connected to a computer with custom software. Samples of fruit juice or antioxidants are subjected to an electric current. His response is measured by voltammetry, in which this is measured by the potential is very varied, and dielectric spectroscopy, in which the impedance of a material is measured in a frequency range.
The language has so far succeeded in measuring the antioxidant content in the solutions with citric acid, ascorbic acid (vitamin C) and malic acid, along with binary mixtures of these substances. The UPV team are trying to use to experience the degradation of vitamin C in juices, especially orange juice.
It is likely that the technology could even be used to detect residues of glyphosate, a herbicide that could be generally used in fruit and vegetables. Another application might involve the monitoring of water quality in waste water plants.