Niveles de Coliformes totales y Escherichia coli en Anadara tuberculosa y Anadara similis en el Recinto El Morro, Provincia del Guayas
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2018
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Facultad de Ciencias Naturales. Universidad de Guayaquil
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En el Golfo de Guayaquil existen evidencias de contaminación por coliformes fecales y Escherichia coli. Es por ello por lo que el objetivo de la presente investigación fue determinar los niveles de coliformes totales y Escherichia coli en los bivalvos de consumo humano Anadara tuberculosa y similis recolectadas en el recinto Puerto El Mono de la provincia del Guayas, con la finalidad de proponer un sistema de depuración para asegurar Ia inocuidad alimentaria. Para ello se colectaron 30 muestras de cada especie en tres períodos durante los meses de noviembre y diciembre de 2017, en cuatro esteros: Marcelita, Caballito, Chalaco y Capón. Se determinaron los niveles de Escherichia coli y Coliformes totales presentes en las especies de bivalvos de consumo humano. Los valores de coliformes totales y E. colí en Anadara similis oscilo entre I8.8x 103 UFC/g hasta 90x 105 UFC/g y 490 UFC/g hasta 2xl05 UFC/g y en la especie Anadara tuberculosa se oscilo desde 80 UFC/g hasta 86x104UFC/g y 40 UFC/g - 73xl03 UFC/g para coliformes y E. coli, respectivamente. Desde el punto de vista sanitario las especies A.similis y A. tuberculosa no son aptas para el consumo humano directo por su elevada carga microbiológica, ya que superan los límites máximos permisibles según el Reglamento CE No854/2004 del Parlamento Europeo. Finalmente se propone un sistema de depuración de los organismos para asegurar la inocuidad alimentaria en los consumidores.
In the Gulf of Guayaquil there is evidence of contamination by fecal coliforms and Eschcrichia coli. That is why the objective of the present investigation was to determine the levels of total coliforms and Esclrcrichia coli in the bivalves of human consumption Anadara tuberculosa and Anadara similis collected in the Puerto El Morro enclosure of the province of Guayas, in order to propose a purification system to ensure food safety. To do this, 30 samples of each species were collected in three periods during the months of November and December of 2017, in four estuaries: Marcelita, Caballito, Chalaco and Capón. The levels of Escherichia coli and total Coliforms present in bivalve species for human consumption were determined. The values of total coliforms and E. coli in Anadara símilis ranged from l8.8xl02 CFU/g up to 90xl05 CFU/g and 490 CFU /g up to 2x105 CFU / g and in the species Anadara tuberculosa oscillo from 80 CFU /g up to 86xl04 CFU /g and 40 UFC/g - 73x103 CFU /g for coliforms and E. coli, respectively. From the sanitary point of view, the species A. similis and A. tuberculosa are not suitable for direct human consumption because of their high microbiological load, since they exceed the maximum permissible limits according to EC Regulation No 854/2004 of the European Parliament. Finally, a purification system for organisms is proposed safety in consumers.
In the Gulf of Guayaquil there is evidence of contamination by fecal coliforms and Eschcrichia coli. That is why the objective of the present investigation was to determine the levels of total coliforms and Esclrcrichia coli in the bivalves of human consumption Anadara tuberculosa and Anadara similis collected in the Puerto El Morro enclosure of the province of Guayas, in order to propose a purification system to ensure food safety. To do this, 30 samples of each species were collected in three periods during the months of November and December of 2017, in four estuaries: Marcelita, Caballito, Chalaco and Capón. The levels of Escherichia coli and total Coliforms present in bivalve species for human consumption were determined. The values of total coliforms and E. coli in Anadara símilis ranged from l8.8xl02 CFU/g up to 90xl05 CFU/g and 490 CFU /g up to 2x105 CFU / g and in the species Anadara tuberculosa oscillo from 80 CFU /g up to 86xl04 CFU /g and 40 UFC/g - 73x103 CFU /g for coliforms and E. coli, respectively. From the sanitary point of view, the species A. similis and A. tuberculosa are not suitable for direct human consumption because of their high microbiological load, since they exceed the maximum permissible limits according to EC Regulation No 854/2004 of the European Parliament. Finally, a purification system for organisms is proposed safety in consumers.
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BIVALVOS, COLIFORMES, E.coli, DEPURACIÓN