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      Antioxidant and antimicrobial activity of capulin (Prunus serotina subsp capuli) extracts Translated title: Actividad antioxidante y antimicrobiana de extractos de capulín (Prunus serotina subsp capuli)

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          Abstract

          Capulin (Prunus serotina subsp. capuli) is an annual fruit widely used in Mexico for the elaboration of several traditional products, such as medicinal tea, which is considered to present antioxidant and antimicrobial properties. The aim of this work was to evaluate the antioxidant and antimicrobial properties of aqueous, acetone, ethanol and methanol extracts. The ethanol extract presented a high anthocyanin (102±7.70 mg Cyd-3-glu/100 g extract) and polyphenol (1732±43.40 mg GAE /100 g extract) content and a high scavenging antioxidant activity (73.47±0.01%) in accordance with the reducing power (3.164±0.028), redox potential (395±2 mV) and optical density (0.921±0.08). It also presented antimicrobial activity against the majority of gram (-) bacteria: Salmonella typhimurium, Proteus mirabilis, Escherichia coli and Pseudomona aeruginosa, but only against one gram (+) bacterium: Staphylococcus aureus. In addition, said extract inhibited yeast activity, but had no effect on molds. Therefore, this ethanol extract could present potential as a food additive.

          Translated abstract

          El capulín (Prunus serotina subsp. capuli) es una planta anual ampliamente usada en México para la elaboración de varios productos tradicionales, tales como té medicinal, el cual es considerado posee propiedades antioxidantes y antimicrobianas. El principal objetivo de este trabajo fue evaluar las propiedades antioxidantes y antimicrobianas del extracto acuoso, acetónico, etanólico y metanólico del fruto de Capulín. El extracto etanólico presentó un alto contenido de antocianinas (102±7.70 mg Cyd-3-glu/100 g extracto) y polifenoles (1732±43.40 mg GAE /100 g extracto), así como una alta actividad antioxidante (73.47±0.01%) en concordancia con el poder reductor (3.164±0.028), potencial redox (395±2 mV) y densidad óptica (0.921±0.08). Este extracto, también presentó mayor actividad antimicrobiana contra las bacterias gram (-): Salmonella typhimurium, Proteus mirabilis, Escherichia coli y Pseudomona aeruginosa, pero solo contra la bacteria gram (+): Staphylococcus aureus. Además, dicho extracto inhibió la actividad de levaduras, pero no tuvo efecto sobre mohos. Por lo tanto, el extracto etanólico podrí a presentar potencial como un aditivo en alimentos.

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          Antioxidant properties of phenolic compounds

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            Phenolics in cereals, fruits and vegetables: occurrence, extraction and analysis.

            Consumption of plant foods, particularly fruits, vegetables and cereal grains is encouraged because they render beneficial health effects. Phenolics and polyphenolics are among the most desirable food bioactives because of their antioxidant activity, brought about by a number of pathways, or due to other mechanisms. The analysis of phenolics and polyphenolics requires their extraction possible purification and structure elucidation. This overview provides a cursory account of the source, extraction and analysis of phenolics in fruits, vegetables and cereals.
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              Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria that Grow Aerobically

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                Author and article information

                Journal
                rmiq
                Revista mexicana de ingeniería química
                Rev. Mex. Ing. Quím
                UAM, Unidad Iztapalapa, División de Ciencias Básicas e Ingeniería (México, DF, Mexico )
                1665-2738
                April 2011
                : 10
                : 1
                : 29-37
                Affiliations
                [01] Xalapa Veracruz orgnameUniversidad Veracruzana orgdiv1Instituto de Ciencias Básicas México cberistain@ 123456uv.mx
                Article
                S1665-27382011000100004 S1665-2738(11)01000100004
                80f9281a-a673-41cd-bbbc-b6a133504e0f

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 24 January 2011
                : 01 March 2011
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 28, Pages: 9
                Product

                SciELO Mexico

                Categories
                Biotechnology

                polifenoles,polyphenols,anthocyanins,antibacterial,DPPH,redox potential,antimicrobianos,antocianinas,potencial REDOX

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