Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)

Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)

TLC autographic assays revealed in the hexane extract of Iryanthera juruensis (Myristicaceae) the presence of two compounds, with antioxidant properties towards β-carotene. They were isolated and identified as 3-methyl-sargachromenol (1) and sargachromenol (2). Further investigation of the hexane ex...

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Main Authors: Dulce Helena Siqueira Silva, F. C. Pereira, M. Yoshida, Maria Valnice Boldrin Zanoni
Format: Article
Language:English
Published: Universidade Estadual Paulista 2018-05-01
Series:Eclética Química
Online Access:https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/466
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spelling doaj-9577bbb99e304d31a5bb83bff5adc1472020-11-25T00:24:20ZengUniversidade Estadual PaulistaEclética Química1678-46182018-05-01303152110.26850/1678-4618eqj.v30.3.2005.p15-21466Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)Dulce Helena Siqueira Silva0F. C. Pereira1M. Yoshida2Maria Valnice Boldrin Zanoni3Instituto de Química, Universidade Estadual Paulista, C.P. 355, CEP 14800-900, Araraquara - SP, Brazil.Instituto de Química, Universidade Estadual Paulista, C.P. 355, CEP 14800-900, Araraquara - SP, Brazil.Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05508-900, São Paulo - SP, Brazil.Instituto de Química, Universidade Estadual Paulista, C.P. 355, CEP 14800-900, Araraquara - SP, Brazil.TLC autographic assays revealed in the hexane extract of Iryanthera juruensis (Myristicaceae) the presence of two compounds, with antioxidant properties towards β-carotene. They were isolated and identified as 3-methyl-sargachromenol (1) and sargachromenol (2). Further investigation of the hexane extract led to isolations of 3-methyl-sargaquinoic acid (3) and sargaquinoic acid (4). The electrochemical behaviour of these compounds was studied in CH 2 Cl 2 /Bu 4 NBF 4 at glassy carbon electrode. The phenolic group in both tocotrienols 1 and 2 are oxidized at +0.23V and +0.32V and their oxidation potentials are correlated with the observed antioxidant activities and oxidation mechanism of α-tocopherol. The reductive voltametric behaviour of quinone function in both plastoquinones 3 and 4 is discussed.https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/466
collection DOAJ
language English
format Article
sources DOAJ
author Dulce Helena Siqueira Silva
F. C. Pereira
M. Yoshida
Maria Valnice Boldrin Zanoni
spellingShingle Dulce Helena Siqueira Silva
F. C. Pereira
M. Yoshida
Maria Valnice Boldrin Zanoni
Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
Eclética Química
author_facet Dulce Helena Siqueira Silva
F. C. Pereira
M. Yoshida
Maria Valnice Boldrin Zanoni
author_sort Dulce Helena Siqueira Silva
title Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
title_short Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
title_full Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
title_fullStr Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
title_full_unstemmed Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
title_sort electrochemical evaluation of lipophilic antioxidants from iryanthera juruensis fruits (myristicaceae)
publisher Universidade Estadual Paulista
series Eclética Química
issn 1678-4618
publishDate 2018-05-01
description TLC autographic assays revealed in the hexane extract of Iryanthera juruensis (Myristicaceae) the presence of two compounds, with antioxidant properties towards β-carotene. They were isolated and identified as 3-methyl-sargachromenol (1) and sargachromenol (2). Further investigation of the hexane extract led to isolations of 3-methyl-sargaquinoic acid (3) and sargaquinoic acid (4). The electrochemical behaviour of these compounds was studied in CH 2 Cl 2 /Bu 4 NBF 4 at glassy carbon electrode. The phenolic group in both tocotrienols 1 and 2 are oxidized at +0.23V and +0.32V and their oxidation potentials are correlated with the observed antioxidant activities and oxidation mechanism of α-tocopherol. The reductive voltametric behaviour of quinone function in both plastoquinones 3 and 4 is discussed.
url https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/466
work_keys_str_mv AT dulcehelenasiqueirasilva electrochemicalevaluationoflipophilicantioxidantsfromiryantherajuruensisfruitsmyristicaceae
AT fcpereira electrochemicalevaluationoflipophilicantioxidantsfromiryantherajuruensisfruitsmyristicaceae
AT myoshida electrochemicalevaluationoflipophilicantioxidantsfromiryantherajuruensisfruitsmyristicaceae
AT mariavalniceboldrinzanoni electrochemicalevaluationoflipophilicantioxidantsfromiryantherajuruensisfruitsmyristicaceae
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