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      Actividad antimicrobiana de propóleos provenientes de dos zonas climáticas del estado Miranda, Venezuela. Efecto de la variación estacional Translated title: Antimicrobial activity of propolis from two climatic zones in Miranda state, Venezuela. Seasonal variation effect

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          Abstract

          Se colectaron muestras de propóleos provenientes de dos apiarios del estado Miranda, Venezuela, ubicados en diferentes zonas de vida. La primera localidad se ubica en un bosque húmedo premontano en el Municipio Guaicaipuro y la segunda en un bosque seco tropical en Guatire, Municipio Zamora, desde octubre de 2001 hasta septiembre de 2002. El objetivo del experimento fue evaluar la actividad antimicrobiana de los propóleos colectados y la influencia estacional, en dos zonas de vida. Para el análisis de los datos, se empleó un modelo mixto basado en mediciones repetidas en el tiempo, en cada localidad estudiada y se aplicó la prueba de media de Tukey. Todos los extractos etanólicos de propóleos (EEP) estudiados mostraron actividad antimicrobiana, al inhibir el crecimiento del Staphylococcus aureus ATCC 25.923 con halos de inhibición de hasta 30 mm y del Micrococcus luteus ATCC 9.341. Las muestras de EEP recolectadas en Guatire en enero y las de enero y julio de El Laurel mostraron mayor actividad antimicrobiana. Los resultados sugieren que los propóleos estudiados muestran influencia estacional en la inhibición del crecimiento bacteriano y que los EEP pueden ser usados como agentes antimicrobianos contra S. aureus y M. luteus.

          Translated abstract

          Propolis samples were collected from apiaries at two locations in Miranda state, Venezuela, located in different life zones. The first location is at a humid premountain forest in Guaicaipuro Municipality and the second is at a dry tropical forest in Guatire, Zamora Municipality, from October 2001 to September 2002. This assay was carried out to evaluate the seasonal influence and the antibacterial activity by the propolis collected in both life zones. The data were analyzed through a mixed model based on repeated measures in each location and means separated by the Tukey test. All ethanolic extracts of propolis (EEP) showed antimicrobial activity inhibiting growth of Staphylococcus aureus ATCC 25.923, with an inhibition halo up to 30 mm, and Micrococcus luteus ATCC 9.341. EEP samples collected from Guatire in January and from El Laurel in January and July exhibited the highest antibacterial activity. The results suggest that the studied propolis showed seasonal influence in the inhibition of bacterial growth and that EEP could be used as antimicrobial agents against S. aureus and M. luteus.

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          Antibacterial, antifungal and antiviral activity of propolis of different geographic origin.

          Propolis samples from different geographic origins were investigated for their antibacterial (against Staphylococcus aureus and Escherichia coli), antifungal (against Candida albicans) and antiviral (against Avian influenza virus) activities. All samples were active against the fungal and Gram-positive bacterial test strains, and most showed antiviral activity. The activities of all samples were similar in spite of the differences in their chemical composition. In samples from the temperate zone, flavonoids and esters of phenolic acids are known to be responsible for the above mentioned activities of bee glue; tropical samples did not contain such substances but showed similar activities. Obviously, in different samples, different substance combinations are essential for the biological activity of the bee glue. It seems that propolis has general pharmacological value as a natural mixture and not as a source of new powerful antimicrobial, antifungal and antiviral compounds.
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            Propolis: A Review

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              Propolis: A review

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                Author and article information

                Journal
                zt
                Zootecnia Tropical
                Zootecnia Trop.
                Instituto Nacional de Investigaciones Agricolas INIA, Maracay, Venezuela. (Maracay, Aragua, Venezuela )
                0798-7269
                March 2006
                : 24
                : 1
                : 43-53
                Affiliations
                [01] . San Juan de los Morros Guarico orgnameUniversidad Nacional Experimental Romulo Gallegos orgdiv1Area de Agronomia. Venezuela Correo electrónico: tonyman77@ 123456terra.com
                Article
                S0798-72692006000100004 S0798-7269(06)02400104
                59a01735-1f58-423c-bffb-ba6bc939930a

                http://creativecommons.org/licenses/by/4.0/

                History
                : 16 August 2005
                : 21 February 2006
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 26, Pages: 11
                Product

                SciELO Venezuela

                Categories
                Artículos Científicos

                actividad antimicrobiana,Venezuela,propóleos,antimicrobial activity,propolis

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