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Molecules 2013, 18(5), 4942-4954; doi:10.3390/molecules18054942
Article

Phenolic Constituents, Antioxidant and Preliminary Antimycoplasmic Activities of Leaf Skin and Flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain)

1, 1, 2, 2 and 1,*
Received: 19 February 2013; in revised form: 19 April 2013 / Accepted: 23 April 2013 / Published: 26 April 2013
(This article belongs to the Special Issue Phytochemicals: Analytical and Medicinal Chemistry)
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Abstract: The methanol extracts of leaf skins and flowers of Aloe vera from the Canary Islands were analyzed for their phenolic profiles and screened for their antioxidant and antimycoplasmic activities. The use of reversed phase high performance liquid chromatography (RP-HPLC) allowed the identification of 18 phenolic constituents. Leaf skin extracts were characterized by the abundance of catechin, sinapic acid and quercitrin. Gentisic acid, epicatechin and quercitrin were the most prominent phenolic compounds of the flowers. The in vitro antioxidant activities determined by using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric antioxidant reducing power (FRAP) assays revealed that both extracts exhibited antioxidant activity, being the leaf skin extract the most active fraction. The leaf skin extract was also found to be active against the microbial strains tested. Therefore, A. vera extracts from leaf skin and flowers can be considered as good natural antioxidant sources.
Keywords: Aloe vera; leaf skin; phenolic constituents; antioxidant activity; antimycoplasmic activity Aloe vera; leaf skin; phenolic constituents; antioxidant activity; antimycoplasmic activity
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.

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MDPI and ACS Style

López, A.; de Tangil, M.S.; Vega-Orellana, O.; Ramírez, A.S.; Rico, M. Phenolic Constituents, Antioxidant and Preliminary Antimycoplasmic Activities of Leaf Skin and Flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain). Molecules 2013, 18, 4942-4954.

AMA Style

López A, de Tangil MS, Vega-Orellana O, Ramírez AS, Rico M. Phenolic Constituents, Antioxidant and Preliminary Antimycoplasmic Activities of Leaf Skin and Flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain). Molecules. 2013; 18(5):4942-4954.

Chicago/Turabian Style

López, Aroa; de Tangil, Miguel S.; Vega-Orellana, Orestes; Ramírez, Ana S.; Rico, Milagros. 2013. "Phenolic Constituents, Antioxidant and Preliminary Antimycoplasmic Activities of Leaf Skin and Flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain)." Molecules 18, no. 5: 4942-4954.


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