Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils
We describe the application of square wave voltammetry at ultramicroelectrodes for the determination of natural antioxidants (α, δ, and γ tocopherols), and tert-butyl hydroxytoluene in edible vegetable oils. Tocopherol determinations were performed in benzene/ethanol (1:2) + 0.1 mol L-1 H2SO4 + oil...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09254005_v192_n_p467_Robledo |
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todo:paper_09254005_v192_n_p467_Robledo2023-10-03T15:46:13Z Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils Robledo, S.N. Tesio, A.Y. Ceballos, C.D. Zon, M.A. Fernández, H. Edible vegetable oils Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultramicroelectrodes Edible vegetable oil Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultra microelectrodes Antioxidants Carbon fibers Vegetable oils Voltammetry Microelectrodes We describe the application of square wave voltammetry at ultramicroelectrodes for the determination of natural antioxidants (α, δ, and γ tocopherols), and tert-butyl hydroxytoluene in edible vegetable oils. Tocopherol determinations were performed in benzene/ethanol (1:2) + 0.1 mol L-1 H2SO4 + oil samples at a carbon fiber disk ultramicroelectrode, and tert-butyl hydroxytoluene was determined in acetonitrile (ACN) + 0.1 mol L-1 (C4H 9)4NF6P at a Pt band ultramicroelectrode after performing its extraction from the oil sample with ACN. Recovery percentages determined by the standard additions method were in the range from 92% to 102%, with variation coefficients between 0.5% and 4%. Antioxidant concentrations calculated by this methodology were in good agreement with those values declared by the manufacturers. © 2013 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09254005_v192_n_p467_Robledo |
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Universidad de Buenos Aires |
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I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Edible vegetable oils Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultramicroelectrodes Edible vegetable oil Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultra microelectrodes Antioxidants Carbon fibers Vegetable oils Voltammetry Microelectrodes |
| spellingShingle |
Edible vegetable oils Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultramicroelectrodes Edible vegetable oil Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultra microelectrodes Antioxidants Carbon fibers Vegetable oils Voltammetry Microelectrodes Robledo, S.N. Tesio, A.Y. Ceballos, C.D. Zon, M.A. Fernández, H. Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| topic_facet |
Edible vegetable oils Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultramicroelectrodes Edible vegetable oil Square wave voltammetry Tert-butyl hydroxytoluene Tocopherols Ultra microelectrodes Antioxidants Carbon fibers Vegetable oils Voltammetry Microelectrodes |
| description |
We describe the application of square wave voltammetry at ultramicroelectrodes for the determination of natural antioxidants (α, δ, and γ tocopherols), and tert-butyl hydroxytoluene in edible vegetable oils. Tocopherol determinations were performed in benzene/ethanol (1:2) + 0.1 mol L-1 H2SO4 + oil samples at a carbon fiber disk ultramicroelectrode, and tert-butyl hydroxytoluene was determined in acetonitrile (ACN) + 0.1 mol L-1 (C4H 9)4NF6P at a Pt band ultramicroelectrode after performing its extraction from the oil sample with ACN. Recovery percentages determined by the standard additions method were in the range from 92% to 102%, with variation coefficients between 0.5% and 4%. Antioxidant concentrations calculated by this methodology were in good agreement with those values declared by the manufacturers. © 2013 Elsevier B.V. All rights reserved. |
| format |
JOUR |
| author |
Robledo, S.N. Tesio, A.Y. Ceballos, C.D. Zon, M.A. Fernández, H. |
| author_facet |
Robledo, S.N. Tesio, A.Y. Ceballos, C.D. Zon, M.A. Fernández, H. |
| author_sort |
Robledo, S.N. |
| title |
Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| title_short |
Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| title_full |
Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| title_fullStr |
Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| title_full_unstemmed |
Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| title_sort |
electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils |
| url |
http://hdl.handle.net/20.500.12110/paper_09254005_v192_n_p467_Robledo |
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