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Journal of Chemistry
Volume 2018, Article ID 2573270, 9 pages
https://doi.org/10.1155/2018/2573270
Research Article

Determination of the Phenolic Profile and Antioxidant Activity of Leaves and Fruits of Spanish Quercus coccifera

Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071 Jaén, Spain

Correspondence should be addressed to E. J. Llorent-Martínez; se.neaju@tnerolle

Received 30 May 2018; Revised 24 July 2018; Accepted 9 August 2018; Published 6 September 2018

Academic Editor: Jose A. Pereira

Copyright © 2018 L. Molina-García et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this work, we report the phytochemical composition and antioxidant activity of methanol extracts of leaves and fruits (acorns) of Quercus coccifera (kermes oak). Forty-one compounds were characterized using high-performance liquid chromatography with electrospray multistage mass spectrometry (HPLC-ESI-MSn) with an ion trap mass spectrometer. A high percentage of the detected compounds were gallic acid derivatives, although some saccharides and flavonoids were also present. This phytochemical pattern is typical in Quercus species, which are rich in gallotannins. These compounds are partially responsible for the cardioprotective effects observed in different food samples containing them. We evaluated the antioxidant activity by ABTS and DPPH assays. In both cases, high antioxidant activity was observed, being higher in acorns than in leaves. The high antioxidant potential of the extracts, which is related to the high total phenolic content, indicates the potential benefit of the use of this species as a source of bioactive compounds.