{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T21:26:19Z","timestamp":1767907579236,"version":"3.49.0"},"reference-count":46,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,1,26]],"date-time":"2020-01-26T00:00:00Z","timestamp":1579996800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Ascorbic Acid (AA) is a natural and powerful water-soluble antioxidant associated with long-lasting food products. As time passes, the AA content in products sharply decreases, and they become increasingly degraded. There are several techniques to precisely quantify AA concentrations. However, most of them employ costly laboratory instruments, such as High-Performance Liquid Chromatography (HPLC) or complex electrochemical methods, which make unfeasible recurrent AA measurements along the entire supply chain. To address this issue, we contribute with an in-field and real-time voltammetric method, carried out with a low-cost, easy-to-use, and portable device. An unmodified Screen-Printed Electrode (SPE) is used together with the device to achieve short reading times. Our method has been extensively tested in two multifruit juices using three different SPEs. Calibration curves and Limit of Detection were derived for each SPE. Furthermore, periodic experiments were conducted to study the shelf life of juices under consideration. During the analysis, a set of assays for each SPE were implemented to determine the remaining AA amount per juice and compare it with that obtained using HPLC under the same conditions. Results revealed that our cost-effective device is fully comparable to the HPLC equipment, as long as the juice does not include certain interferents; a scenario also contemplated in this article.<\/jats:p>","DOI":"10.3390\/s20030676","type":"journal-article","created":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T07:41:11Z","timestamp":1580110871000},"page":"676","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Quick and Cost-Effective Estimation of Vitamin C in Multifruit Juices Using Voltammetric Methods"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8266-8669","authenticated-orcid":false,"given":"Jose-Antonio","family":"L\u00f3pez-Pastor","sequence":"first","affiliation":[{"name":"Department of Information and Communication Technologies (TIC), Technical University of Cartagena (UPCT), ETSIT, Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4548-4427","authenticated-orcid":false,"given":"Ascensi\u00f3n","family":"Mart\u00ednez-S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Postharvest and Refrigeration Group (GPR), ETSIA, UPCT, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain"},{"name":"Food Quality and Health Group. Institute of Plant Biotechnology, UPCT. Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0879-6651","authenticated-orcid":false,"given":"Juan","family":"Aznar-Poveda","sequence":"additional","affiliation":[{"name":"Department of Information and Communication Technologies (TIC), Technical University of Cartagena (UPCT), ETSIT, Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5095-3035","authenticated-orcid":false,"given":"Antonio-Javier","family":"Garc\u00eda-S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Department of Information and Communication Technologies (TIC), Technical University of Cartagena (UPCT), ETSIT, Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0741-7530","authenticated-orcid":false,"given":"Joan","family":"Garc\u00eda-Haro","sequence":"additional","affiliation":[{"name":"Department of Information and Communication Technologies (TIC), Technical University of Cartagena (UPCT), ETSIT, Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0052-4168","authenticated-orcid":false,"given":"Encarnaci\u00f3n","family":"Aguayo","sequence":"additional","affiliation":[{"name":"Postharvest and Refrigeration Group (GPR), ETSIA, UPCT, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain"},{"name":"Food Quality and Health Group. Institute of Plant Biotechnology, UPCT. Campus Muralla del Mar, s\/n, 30202 Cartagena, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,1,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Carr, A., and Maggini, S. (2017). Vitamin C and immune function. Nutrients, 9.","DOI":"10.3390\/nu9111211"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"825","DOI":"10.1002\/(SICI)1097-0010(20000515)80:7<825::AID-JSFA598>3.0.CO;2-6","article-title":"Plant L-ascorbic acid: Chemistry, function, metabolism, bioavailability and effects of processing","volume":"80","author":"Davey","year":"2000","journal-title":"J. Sci. Food Agric."},{"key":"ref_3","unstructured":"Padayatty, S., Katz, A., Wang, Y., Eck, P., Lee, J., Chen, S., Corpe, C., and Dutta, A. (2013). Vitamin C as an antioxidant: Evaluation of its role in disease prevention vitamin C as an antioxidant: Evaluation of its role in. J. Am. 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