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Evidence-Based Complementary and Alternative Medicine
Volume 2013 (2013), Article ID 801383, 5 pages
http://dx.doi.org/10.1155/2013/801383
Research Article

Composition and Antioxidant Activity of Geopropolis Collected by Melipona subnitida (Jandaíra) Bees

1Laboratório de Bioprospecção Fitoquímica, Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, 52171-900 Recife, PE, Brazil
2Colegiado de Zootecnia, Universidade Federal do Vale de São Francisco, 56300-990 Petrolina, PE, Brazil

Received 17 April 2013; Accepted 18 June 2013

Academic Editor: Wagner Vilegas

Copyright © 2013 Silvana Alves de Souza 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

An investigation of the geopropolis collected by Melipona subnitida (jandaíra) stingless bee led to the isolation and characterization of two phenylpropanoids, 6-O-p-coumaroyl-D-galactopyranose (1) and 6-O-cinnamoyl-1-O-p-coumaroyl-β-D-glucopyranose (2), and seven flavonoids, 7-O-methyl-naringenin (3), 7-O-methyl aromadendrin (4), 7,4′-di-O-methyl aromadendrin (5), 4′-O-methyl kaempferol (6), 3-O-methyl quercetin (7), 5-O-methyl aromadendrin (8), and 5-O-methyl kaempferol (9). The structure of the new phenylpropanoid (1) was established from IR, LC-ESI-MS, and NMR spectral data, including 2D NMR experiments. The extract and fractions demonstrated significant antioxidant activity in DPPH, ABTS, and β-carotene/linoleic acid tests.