{"id":5155,"date":"2024-04-02T10:35:12","date_gmt":"2024-04-02T10:35:12","guid":{"rendered":"http:\/\/www.ptfos.unios.hr\/novicjfst\/?p=5155"},"modified":"2024-06-19T11:16:05","modified_gmt":"2024-06-19T11:16:05","slug":"cjfst-2024-16-1-01","status":"publish","type":"post","link":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/2024\/04\/02\/cjfst-2024-16-1-01\/","title":{"rendered":"CJFST.2024.16.1.01"},"content":{"rendered":"

\"\"<\/a><\/em><\/p>\n

Electrochemical characterization and detection of vitamin E in real samples<\/strong><\/h1>\n

\"https:\/\/orcid.org\/0000-0003-0113-0141\"<\/a>Dominik Goman*, Valentina Dankovi\u0107, Olivera Galovi\u0107, Martina Medvidovi\u0107-Kosanovi\u0107<\/strong><\/span><\/p>\n

Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Cara Hadrijana 8\/A, 31000 Osijek, <\/em>Croatia<\/em><\/p>\n\n\n\n\n\n\n\n\n\n\n
ARTICLE INFO<\/strong><\/td>\nABSTRACT<\/strong><\/td>\n<\/tr>\n
TYPE:<\/strong> Original scientific paper
\nhttps:\/\/doi.org\/10.17508\/CJFST.2024.16.1.01<\/span><\/a><\/span><\/span>
\n<\/span><\/span>PDF<\/strong><\/a>
\n<\/span><\/span><\/td>\n		Vitamin E is an important antioxidant and plays an essential role in cellular respiration. At room temperature, it exists in the form of viscous oil and is highly soluble in fat. Vitamin E is a group of eight compounds: four tocopherols and four tocotrienols. In this study, \u03b1<\/em>-tocopherol (\u03b1<\/em> -TOH) was characterized using cyclic and differential pulse voltammetry and was detected with high-performance liquid chromatography in real samples (kale, parsley, and a powdered dietary supplement). Cyclic and differential pulse voltammograms have shown one oxidation peak which corresponds to the oxidation of \u03b1<\/em> -TOH. In the oxidation of \u03b1 <\/em>-TOH, rapid two-electron oxidation coupled with one proton loss (\u20132e\u2212<\/sup>\/\u20131H+<\/sup>) occurred, and a diamagnetic cation (\u03b1<\/em> -TO+<\/sup>) was formed. Oxidation of \u03b1<\/em> -TOH \u03b1 is an irreversible and a diffusion-controlled process since the linear correlation between anodic peak current, I<\/em>p<\/sub>,a<\/sub>, and the square root of scan rate (\u03bd<\/em>)1\/2<\/sup> was observed. It was also determined that the anodic peak current of \u03b1<\/em> -TOH increases with the increase of its concentration (linear response was obtained in the concentration range from 0.43 mg\/dm3<\/sup> to 70.41 mg\/dm3<\/sup>). The obtained values of \u03b1<\/em> -TOH in real samples were 8.267 mg\/kg for parsley, 1.492 mg\/kg for kale, and 0.067 mg\/kg for powdered dietary supplement.<\/td>\n<\/tr>\n
*<\/strong>CORRESPONDENCE
\n<\/strong>Dominik Goman
\ngomandominik@gmail.com<\/td>\n<\/tr>\n
ARTICLE HISTORY
\n<\/strong>Received: December 19, 2023
\nAccepted: January 12, 2024<\/td>\n<\/tr>\n
CITATION
\n<\/strong>Goman D, Dankovi\u0107 V, Galovi\u0107 O, Medvidovi\u0107-Kosanovi\u0107 M. Electrochemical characterization and detection of vitamin E in real samples. Croatian Journal of Food Science and Technology (2024) 16 (1) 1-9<\/td>\n<\/tr>\n
\"\"<\/a><\/strong>C<\/strong>OPYRIGHT: <\/strong>\u00a9 2024 by the author(s). This is an open-access article distributed
\nunder the terms of the Creative Commons Attribution License (CC BY)<\/em><\/a>.<\/em><\/td>\n<\/tr>\n
KEYWORDS<\/strong><\/p>\n

\u03b1<\/em> \u2013tocopherol; cyclic voltammetry; differential pulse voltammetry; high-performance liquid chromatography; vitamin E<\/p>\n<\/td>\n<\/tr>\n

KEY CONTRIBUTION<\/strong><\/p>\n

Characterization of \u03b1 -tocopherol using cyclic and differential pulse voltammetry. Combination of electrochemical methods and high performance liquid chromatography for the characterization and detection of vitamin E. Oxidation mechanism of \u03b1<\/em> -tocopherol.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Electrochemical characterization and detection of vitamin E in real samples Dominik Goman*, Valentina Dankovi\u0107, Olivera Galovi\u0107, Martina Medvidovi\u0107-Kosanovi\u0107 Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Cara Hadrijana 8\/A, 31000 Osijek, Croatia ARTICLE INFO ABSTRACT TYPE: Original scientific paper https:\/\/doi.org\/10.17508\/CJFST.2024.16.1.01 PDF Vitamin E is an important antioxidant and plays an essential role in cellular … Op\u0161irnije<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5155","post","type-post","status-publish","format-standard","hentry","category-nekategorizirano"],"_links":{"self":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/comments?post=5155"}],"version-history":[{"count":23,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5155\/revisions"}],"predecessor-version":[{"id":5353,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5155\/revisions\/5353"}],"wp:attachment":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/media?parent=5155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/categories?post=5155"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/tags?post=5155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}