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However, sulfite can cause health issues for sensitive consumers, making its monitoring necessary. Determining sulfite concentrations is complex because the Monier\u2010Williams reference method is laborious and has low analytical throughput. Additionally, new techniques are needed to stabilize sulfite during the extraction process because this analyte undergoes rapid oxidation. A new method involving extraction and derivatization of sulfite with formaldehyde through automated pressurized liquid extraction (PLE), followed by quantitation by capillary zone electrophoresis with diode\u2010array detector in indirect mode, was developed and optimized using multivariate planning. The PLE procedure was compared to another solid\u2013liquid extraction method. The new method successfully stabilized and extracted sulfite from shrimp in few steps with adequate precision (CV\u00a0&lt;\u00a03.8%), producing extracts that were stable for 10 days. Recovery was satisfactory (97%\u201399%), and the limits of detection (4.6\u00a0mg\u00a0kg<jats:sup>\u22121<\/jats:sup>) and quantitation (15.4\u00a0mg\u00a0kg<jats:sup>\u22121<\/jats:sup>) were suitable for the intended purpose.<\/jats:p>","DOI":"10.1002\/elps.202400115","type":"journal-article","created":{"date-parts":[[2024,10,29]],"date-time":"2024-10-29T08:06:58Z","timestamp":1730189218000},"page":"486-493","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Pressurized liquid extraction of sulfite for quantitation by capillary zone electrophoresis"],"prefix":"10.1002","volume":"46","author":[{"given":"Samantha","family":"Gon\u00e7alves","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio Federal de Defesa Agropecu\u00e1ria Setor Laboratorial Avan\u00e7ado (SLAV\u2010SC) Minist\u00e9rio da Agricultura e Pecu\u00e1ria  S\u00e3o Jos\u00e9 Santa Catarina Brazil"},{"name":"Departamento de Qu\u00edmica Universidade Federal de Santa Catarina (UFSC)  Florian\u00f3polis Santa Catarina Brazil"},{"name":"Instituto Catarinense de Sanidade Agropecu\u00e1ria (ICASA)  Florian\u00f3polis Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciano","family":"Molognoni","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio Federal de Defesa Agropecu\u00e1ria Setor Laboratorial Avan\u00e7ado (SLAV\u2010SC) Minist\u00e9rio da Agricultura e Pecu\u00e1ria  S\u00e3o Jos\u00e9 Santa Catarina Brazil"},{"name":"Instituto Catarinense de Sanidade Agropecu\u00e1ria (ICASA)  Florian\u00f3polis Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heitor","family":"Daguer","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio Federal de Defesa Agropecu\u00e1ria Setor Laboratorial Avan\u00e7ado (SLAV\u2010SC) Minist\u00e9rio da Agricultura e Pecu\u00e1ria  S\u00e3o Jos\u00e9 Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana Paula Fabichak","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Centro de Ci\u00eancias Rurais, UFSC  Curitibanos Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carolina Turnes Pasini","family":"Deolindo","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio Federal de Defesa Agropecu\u00e1ria Setor Laboratorial Avan\u00e7ado (SLAV\u2010SC) Minist\u00e9rio da Agricultura e Pecu\u00e1ria  S\u00e3o Jos\u00e9 Santa Catarina Brazil"},{"name":"Instituto Catarinense de Sanidade Agropecu\u00e1ria (ICASA)  Florian\u00f3polis Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciano","family":"Vitali","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Universidade Federal de Santa Catarina (UFSC)  Florian\u00f3polis Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2516-9446","authenticated-orcid":false,"given":"Rodrigo","family":"Hoff","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio Federal de Defesa Agropecu\u00e1ria Setor Laboratorial Avan\u00e7ado (SLAV\u2010SC) Minist\u00e9rio da Agricultura e Pecu\u00e1ria  S\u00e3o Jos\u00e9 Santa Catarina Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,10,29]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aqrep.2020.100529"},{"key":"e_1_2_9_3_1","unstructured":"FDA.Fish and fishery products hazard and control guidance (June 2022 Edition).Silver Spring MD:FDA;2022."},{"key":"e_1_2_9_4_1","unstructured":"Brasil Ag\u00eancia Nacional de Vigil\u00e2ncia Sanit\u00e1ria (ANVISA).Resolu\u00e7\u00e3o RDC no 329 de 19 de dezembro de 2019; Di\u00e1rio Oficial da Uni\u00e3o.2019;249:83."},{"key":"e_1_2_9_5_1","first-page":"1","article-title":"Commission Regulation (EU) 2015\/647 of 24 April 2015 amending and correcting annexes II and III to regulation (EC) no 1333\/2008 of the European Parliament and of the council as regards the use of certain food additives","volume":"107","author":"The European Commission","year":"2015","journal-title":"Off J Eur Union"},{"key":"e_1_2_9_6_1","unstructured":"AOAC.Monier\u2010William AOAC ofcial method (optimized method) 99028. 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