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Molecules 2010, 15(10), 6956-6973; doi:10.3390/molecules15106956

Evaluation of Antioxidant Capacity and Synergistic Associations of Quinonemethide Triterpenes and Phenolic Substances from Maytenus ilicifolia (Celastraceae)

1
Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais – NuBBE – Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista, UNESP, CP 355,14801-970 Araraquara-SP, Brazil
2
Departamento de Química Analítica, Instituto de Química, Universidade Estadual Paulista, UNESP, CP 355, 14801-970 Araraquara-SP, Brazil
*
Author to whom correspondence should be addressed.
Received: 27 August 2010 / Revised: 13 September 2010 / Accepted: 24 September 2010 / Published: 11 October 2010
(This article belongs to the Special Issue Antioxidants)
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Abstract

This work describes the isolation of the secondary metabolites identified as the quinonemethides maytenin (1) and pristimerin (2) from Maytenus ilicifolia extracts obtained from root barks of adult plants and roots of seedlings and their quantification by high performance liquid chromatography coupled to a diode array detector. The electrochemical profiles obtained from cyclic voltammetry and a coulometric detector coupled to high-performance liquid chromatography contributed to the evaluation of their antioxidant capacity. The antioxidant properties of individual components and the crude extracts of the root barks of Maytenus ilicifolia were compared and the possible synergistic associations of quinonemethide triterpenes and phenolic substances were investigated by using rutin as a model phenolic compound.
Keywords: antioxidant; high-performance liquid chromatography coupled with electrochemical detection (HPLC-EICD); cyclic voltammetry (CV); quinonemethide; flavonoid antioxidant; high-performance liquid chromatography coupled with electrochemical detection (HPLC-EICD); cyclic voltammetry (CV); quinonemethide; flavonoid
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Aparecida de Freitas Formenton Macedo dos Santos, V.; Pereira dos Santos, D.; Castro-Gamboa, I.; Zanoni, M.V.B.; Furlan, M. Evaluation of Antioxidant Capacity and Synergistic Associations of Quinonemethide Triterpenes and Phenolic Substances from Maytenus ilicifolia (Celastraceae). Molecules 2010, 15, 6956-6973.

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