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A voltammetric tool for the evaluation of propolis antioxidant activity

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Abstract

Propolis (bee glue) is a sticky dark-colored material that honeybees collected from parts of plants, buds and exudates, and used as construction and defense material in the hive. This resinous substance is a rich source of phenolic compounds, and its chemical composition is strongly influenced by its phytogeographic origin. This research outlines the evaluation of the redox profile and the quantification of the total antioxidant capacity in Portuguese propolis from different origins and potential floral sources Populus x canadensis Moench and Cistus ladanifer L through cyclic voltammetry and differential pulse voltammetry. Although several oxidation processes were showed by propolis samples, which were dependent of the resin origin, common oxidation potentials within the majority of samples of a region were detected, suggesting an analogous chemical composition in respect of electroactive species. Based on the quantification of the total electroactive antioxidant power, it was found that propolis with higher antioxidant activity was from coast center, followed by north ~ Azores Archipelago > central interior > Madeira Island > south.

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Acknowledgments

Soraia I. Falcão thanks Foundation for Science and Technology (FCT) for the PhD grant SFRH/BD/44855/2008, financially supported by POPH-QREN and FSE. Thanks also to FCT for financial support provided to CIMO (PEst-OE/AGR/UI0690/2011). Thanks to National Federation of Portuguese Beekeepers for propolis samples.

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Authors and Affiliations

  1. CIMO, Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Sta. Apolónia, Apartado 1172, 5300-253, Bragança, Portugal

    Soraia I. Falcão, Andreia Tomás & Miguel Vilas-Boas

  2. REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal

    Soraia I. Falcão & Cristina Freire

Authors
  1. Soraia I. Falcão
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  2. Andreia Tomás
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  3. Cristina Freire
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  4. Miguel Vilas-Boas
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Correspondence to Miguel Vilas-Boas.

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The authors declare that they have no conflict of interest.

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This article does not contain any studies with human or animal subjects.

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Falcão, S.I., Tomás, A., Freire, C. et al. A voltammetric tool for the evaluation of propolis antioxidant activity. Eur Food Res Technol 242, 1393–1401 (2016). https://doi.org/10.1007/s00217-016-2642-z

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  • DOI: https://doi.org/10.1007/s00217-016-2642-z

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