Contaminación por Coliformes totales y Escherichia coli, en concha (Anadara tuberculosa y Anadara similis) Jambelí, Prov.- El Oro
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2019
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Facultad de Ciencias Naturales. Universidad de Guayaquil
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El trabajo de investigación dirige el análisis de coliformes totales y Escherichia coli en Anadara tuberculosa y Anadara similis. Su medio de desarrollo y hábitat lo comparten con Rhizophora mangle; ubicado en el archipiélago Jambelí, Prov. El oro. En el desarrollo de este estudio, se conoció las fuentes principales de contaminación que inciden en el área y se llevó a cabo el cumplimiento del análisis microbiológico, obteniendo muestras de 4 puntos estratégicos, en época seca (noviembre) y época lluviosa (diciembre). Usando el medio de cultivo Agar Chromocult en 240 conchas para su análisis. Los resultados obtenidos según su tamaño promedio para A. tuberculosa fue de 50,00 mm y A. similis 54,82 mm. En los cultivos microbiológicos, se presenció coliformes totales en A. similis, con una media para el primer muestreo de 1,5x10^4 UFC/100g y segundo muestreo de 2.0x10^4UFC/100g. Para A. tuberculosa 1,7x10^4 UFC/100g y 2,4x10^4 UFC/100g respectivamente, entre los cuatro puntos de muestreo el más elevado por contaminación es el punto 2 con 2,1 x 10^4UFC/100g, en ambas especies no se observó presencia de E. coli. Se planteó la reducción del nivel bacteriano en las especies mediante un sistema de depuración y llevar a cocción los bivalvos antes de ingerirlos.
The following research work leads The analysis of total coliforms and Escherichia coli in Anadara tuberculosa and Anadara similis. In their way of development and habitat hey share it with Rhizophora mangle; located in the Jambelí archipelago, Prov. El Oro. In the development of this study, it was known the main sources of contamination that affect the area and the fulfillment of the microbiological analysis was carried out, obtaining samples from 4 strategic points, at a time dry (November) and rainy season (December). Using Chromocult Agar culture medium in 240 shells for analysis. The results obtained according to their average size for A. tuberculosa were 50.00 mm and A. similis 54.82 mm. In the microbiological cultures, total coliforms were observed in A. similis, with a mean for the first sampling of 1.5x10 ^ 4 CFU / 100g and second sampling of 2.0x10 ^ 4UFC / 100g. For A. tuberculosa 1.7x10 ^ 4 CFU / 100g and 2.4x10 ^ 4 CFU / 100g respectively, among the four sampling points the highest due to contamination is point 2 with 2.1 x 10 ^ 4UFC / 100g, in Both species were not observed presence of E. coli. The reduction of the bacterial level in the species was proposed by means of a purification system and cooking the bivalves before ingesting them.
The following research work leads The analysis of total coliforms and Escherichia coli in Anadara tuberculosa and Anadara similis. In their way of development and habitat hey share it with Rhizophora mangle; located in the Jambelí archipelago, Prov. El Oro. In the development of this study, it was known the main sources of contamination that affect the area and the fulfillment of the microbiological analysis was carried out, obtaining samples from 4 strategic points, at a time dry (November) and rainy season (December). Using Chromocult Agar culture medium in 240 shells for analysis. The results obtained according to their average size for A. tuberculosa were 50.00 mm and A. similis 54.82 mm. In the microbiological cultures, total coliforms were observed in A. similis, with a mean for the first sampling of 1.5x10 ^ 4 CFU / 100g and second sampling of 2.0x10 ^ 4UFC / 100g. For A. tuberculosa 1.7x10 ^ 4 CFU / 100g and 2.4x10 ^ 4 CFU / 100g respectively, among the four sampling points the highest due to contamination is point 2 with 2.1 x 10 ^ 4UFC / 100g, in Both species were not observed presence of E. coli. The reduction of the bacterial level in the species was proposed by means of a purification system and cooking the bivalves before ingesting them.
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CALIDAD ALIMENTARIA, DEPURACION, FUENTES DE CONTAMINACION