Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction
In this paper, we propose voltammetry for determining amino acidity in Japanese sake. The measurement principle of this voltammetric method is based on a concept of acid-base back titration and a decrease of cathodic prepeak current of 3,5-di-tert-butyl-1,2-benzoquinone (DBBQ) caused by surplus HCl,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Electrochemical Society of Japan
2022-11-01
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| Series: | Electrochemistry |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00108/_html/-char/en |
| _version_ | 1811323063573151744 |
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| author | Akira KOTANI Jumpei WATANABE Koichi MACHIDA Kazuhiro YAMAMOTO Hideki HAKAMATA |
| author_facet | Akira KOTANI Jumpei WATANABE Koichi MACHIDA Kazuhiro YAMAMOTO Hideki HAKAMATA |
| author_sort | Akira KOTANI |
| collection | DOAJ |
| description | In this paper, we propose voltammetry for determining amino acidity in Japanese sake. The measurement principle of this voltammetric method is based on a concept of acid-base back titration and a decrease of cathodic prepeak current of 3,5-di-tert-butyl-1,2-benzoquinone (DBBQ) caused by surplus HCl, which is obtained by the neutralization between excess HCl and amino acids in Japanese sake. In the comparisons of amino acidities in Japanese sakes (n = 10) obtained by this voltammetric method and the official titration, called the ethanol additional method, the correlation coefficient (r) was 0.946, indicating that the amino acidities in Japanese sakes by both methods were essentially the same. |
| first_indexed | 2024-04-13T13:47:23Z |
| format | Article |
| id | doaj.art-fd23a7f98d994b6b91e0ae5c9bfb104d |
| institution | Directory Open Access Journal |
| issn | 2186-2451 |
| language | English |
| last_indexed | 2024-04-13T13:47:23Z |
| publishDate | 2022-11-01 |
| publisher | The Electrochemical Society of Japan |
| record_format | Article |
| series | Electrochemistry |
| spelling | doaj.art-fd23a7f98d994b6b91e0ae5c9bfb104d2022-12-22T02:44:27ZengThe Electrochemical Society of JapanElectrochemistry2186-24512022-11-01901111700211700210.5796/electrochemistry.22-00108electrochemistryDetermination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone ReductionAkira KOTANI0https://orcid.org/0000-0002-0113-3353Jumpei WATANABE1Koichi MACHIDA2Kazuhiro YAMAMOTO3Hideki HAKAMATA4https://orcid.org/0000-0002-2964-9685Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life SciencesDepartment of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life SciencesDepartment of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life SciencesDepartment of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life SciencesDepartment of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life SciencesIn this paper, we propose voltammetry for determining amino acidity in Japanese sake. The measurement principle of this voltammetric method is based on a concept of acid-base back titration and a decrease of cathodic prepeak current of 3,5-di-tert-butyl-1,2-benzoquinone (DBBQ) caused by surplus HCl, which is obtained by the neutralization between excess HCl and amino acids in Japanese sake. In the comparisons of amino acidities in Japanese sakes (n = 10) obtained by this voltammetric method and the official titration, called the ethanol additional method, the correlation coefficient (r) was 0.946, indicating that the amino acidities in Japanese sakes by both methods were essentially the same.https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00108/_html/-char/enamino acidityjapanese sakevoltammetryquinone |
| spellingShingle | Akira KOTANI Jumpei WATANABE Koichi MACHIDA Kazuhiro YAMAMOTO Hideki HAKAMATA Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction Electrochemistry amino acidity japanese sake voltammetry quinone |
| title | Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction |
| title_full | Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction |
| title_fullStr | Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction |
| title_full_unstemmed | Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction |
| title_short | Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction |
| title_sort | determination of amino acidity in japanese sake based on the voltammetric measurement of surplus acid by quinone reduction |
| topic | amino acidity japanese sake voltammetry quinone |
| url | https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00108/_html/-char/en |
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