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Hive product science

Antibacterial activity of polyphenol-rich extract of selected wild honey collected in Sabah, Malaysia

Actividad antibacteriana del extracto rico en polifenoles de miel seleccionada silvestre recogida en Sabah, Malasia Resumen

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Pages 163-172 | Received 22 Apr 2013, Accepted 18 Feb 2014, Published online: 11 Mar 2016
 

Abstract

Four types of Sabah wild honey produced by bee species native to Sabah; namely Apis cerana, Apis andreniformis, Apis nuluensis and Apis koschevnikovi were collected from January to April 2012. This study was conducted to determine the antibacterial activity, minimum inhibitory concentration (MIC) activity, total phenolic and flavonoid contents of this wild honey. All samples were extracted using 80% and absolute methanol. For antibacterial activity, wild A. cerana honey showed the strongest effect against all five different bacteria strains tested with its greatest activity against Bacillus cereus with the value of 16.00 mm (100% concentration) in 80% methanol extract. As for the MIC activity, wild A. cerana and wild A. nuluensis honey have the lowest MIC value against the tested bacteria with the lowest against Bacillus cereus and Bacillus subtilis. Total phenolic and total flavonoid contents were highest in the wild A. cerana honey with the values of 10.43 ± .02 and 8.76 ± .00 mg/g in 80% methanol extract. These findings suggested that the wild honey from Sabah have a wide range of phytochemical content and antibacterial activities against different strains of bacteria which might contribute to the development of pharmaceuticals and nutraceuticals products.

Se recogieron cuatro tipos de miel silvestre producida por especies de abejas nativas de Sabah; a saber, Apis cerana, Apis andreniformis, Apis nuluensis y Apis koschevnikovi entre enero y abril de 2012. Este estudio se realizó para determinar la actividad antibacteriana, la actividad de la concentración mínima inhibitoria (CMI), y el contenido de fenoles totales y de flavonoides de esta miel silvestre. Todas las muestras fueron extraídas con metanol al 80% y absoluto. Para la actividad antibacteriana, la miel silvestre de A. cerana mostró el efecto más fuerte contra todas las cinco cepas de diferentes bacterias probadas con su mayor actividad contra Bacillus cereus con el valor de 16,00 mm (concentración 100%) en extracto de metanol 80%. En cuanto a la actividad de CMI, la miel silvestre de A. cerana y A. nuluensis tienen el valor más bajo de CMI contra las bacterias probadas con el nivel más bajo contra Bacillus cereus y Bacillus subtilis. Los contenidos totales de fenólico y de flavonoides fueron más altos en la miel silvestre de A. cerana con los valores de 10,43 ± 0,02 mg/g y 8,76 ± 0,00 mg/g en extracto de metanol al 80%. Estos hallazgos sugieren que la miel silvestre de Sabah tiene una amplia gama de contenido fitoquímico y actividad antibacteriana contra diferentes cepas de bacterias que podrían contribuir al desarrollo de productos farmacéuticos y nutracéuticos.

Acknowledgements

We are indebted to Agriculture Research Station (ARS), Tenom, Sabah, for the for the accommodation and technical assistance, to Institute for Tropical Biology and Conservation (ITBC) and School of Science and Technology (SST) University Malaysia Sabah, Malaysia for the use of the laboratory facilities and technical assistance.

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