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Abstract:

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.

Registro:

Documento: Artículo
Título:Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils
Autor:Robledo, S.N.; Tesio, A.Y.; Ceballos, C.D.; Zon, M.A.; Fernández, H.
Filiación:Departamento de Tecnología Química, Facultad de Ingeniería, Universidad Nacional de Río Cuarto, Agencia Postal No. 3, 5800-Río-Cuarto-Córdoba, Argentina
Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal No. 3, 5800-Río-Cuarto-Córdoba, Argentina
INQUIMAE (CONICET), Facultad de Ciencias Exactas y Natu-rales, Universidad de Buenos Aires, Pabellón 2, Buenos Aires, Argentina
Idioma: Inglés
Palabras clave: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
Año:2014
Volumen:192
Página de inicio:467
Página de fin:473
DOI: http://dx.doi.org/10.1016/j.snb.2013.11.023
Título revista:Sensors and Actuators, B: Chemical
Título revista abreviado:Sens Actuators, B Chem
ISSN:09254005
CODEN:SABCE
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_09254005_v192_n_p467_Robledo

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Citas:

---------- APA ----------
Robledo, S.N., Tesio, A.Y., Ceballos, C.D., Zon, M.A. & Fernández, H. (2014) . Electrochemical ultra-micro sensors for the determination of synthetic and natural antioxidants in edible vegetable oils. Sensors and Actuators, B: Chemical, 192, 467-473.
http://dx.doi.org/10.1016/j.snb.2013.11.023
---------- CHICAGO ----------
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" . Sensors and Actuators, B: Chemical 192 (2014) : 467-473.
http://dx.doi.org/10.1016/j.snb.2013.11.023
---------- MLA ----------
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" . Sensors and Actuators, B: Chemical, vol. 192, 2014, pp. 467-473.
http://dx.doi.org/10.1016/j.snb.2013.11.023
---------- VANCOUVER ----------
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. Sens Actuators, B Chem. 2014;192:467-473.
http://dx.doi.org/10.1016/j.snb.2013.11.023