2026-04-17T10:26:15Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/75862023-04-10T12:44:46Zcom_10259_3924com_10259_5086com_10259_2604com_10259_4313col_10259_3925col_10259_4314

00925njm 22002777a 4500 dc Guirado Moreno, José Carlos author Carreira Barral, Israel author Ibeas Cortes, Saturnino author García Pérez, José Miguel author Granès, Daniel author Marchet, Nicolas author Vallejos Calzada, Saúl author 2023-03 Quality control in the food industry is of the upmost importance from the food safety, organoleptic and commercial viewpoints. Accordingly, the development of in situ, rapid, and costless analytical tools is a valuable task in which we are working. Regarding this point, the copper content of grape must has to be determined by wineries along the wine production process. For this purpose, grape must samples are sent to laboratories where the copper content is measured usually by flame atomic absorption spectrometry or by inductively coupled plasma mass spectrometry. We herein propose a straightforward, rapid, and inexpensive methodology based both on a film-shaped colorimetric polymer sensor and a smartphone method that at the same time can be used by unskilled personnel. The sensory polymer films change their color upon dipping them on the grape must, and the color evolution is analyzed using the digital color parameters of a picture taken to the film with a smartphone. Furthermore, the analytical procedure is automatically carried out by a smartphone app. The limit of detection of copper of the polymer sensor is 0.08 ppm. Following this approach, 18 production samples coming from the French Groupe ICV company were studied. The copper content of the samples was analyzed by the usual procedure carried out by the company (flame atomic absorption spectrometry) and by the method proposed in this work, ranging this content from 0.41 to 6.08 ppm. The statistical study showed that the results of both methods are fully consistent, showing the validity of the proposed method for the determination of copper in grape must within the frame of wine production wineries and industries. 1944-8244 http://hdl.handle.net/10259/7586 10.1021/acsami.3c00395 36939579 1944-8252 Copper detection Grape must Wine industry Sensory polymers Colorimetry RGB parameters Democratization of Copper Analysis in Grape Must Following a Polymer-Based Lab-on-a-Chip Approach