Características microbiológicas de salmão (Salmo salar) comercializado em algumas cidades da região nordeste do estado de São Paulo
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Data
2009-07-03
Autores
Nespolo, Natália Maramarque [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Tem sido evidente o aumento no consumo de pescado, especialmente do salmão (Salmo salar) sob a forma “in natura”, em pratos da cozinha oriental. Como conseqüência, tem havido maior preocupação quanto às suas características higiênico-sanitárias, tendo em vista a facilidade que microrganismos encontram para se desenvolverem em sua carne, o que pode expor os consumidores a agentes que causam desde uma simples gastrenterite até o óbito. Diante desta preocupação, desenvolveu-se este estudo com objetivos de avaliar características microbiológicas do salmão por meio da quantificação de microrganismos heterotróficos mesófilos, coliformes totais e termotolerantes, o perigo de veiculação de Vibrio parahaemolyticus, Staphylococcus aureus, Salmonella sp., Escherichia coli e Aeromonas sp. através da carne e contribuir com subsídios técnicos para criar uma legislação brasileira com padrões microbiológicos específicos para o pescado consumido cru. Foram colhidas 31 amostras de salmão, 16 refrigeradas e 15 congeladas, no comércio varejista de cidades da região nordeste do estado de São Paulo. Os resultados obtidos mostram populações de microrganismos heterotróficos mesófilos variando entre 1,0 x 10 e 3,9 x 106 UFC/g, coliformes totais e termotolerantes em, respectivamente, 32,24% e 19,33% das amostras e Aeromonas sp. em 35,48% das amostras com variação populacional de 2,0 x 102 a 8,0 x 103 UFC/g. Ainda houve a presença de Staphylococcus aureus em uma amostra e ausência de Vibrio parahaemolyticus, Salmonella sp. e Escherichia coli. Os resultados obtidos podem servir de parâmetro para a criação de um padrão microbiológico específico para o pescado consumido cru e servem também de alerta para os consumidores do produto tendo em vista a veiculação de microrganismos potencialmente patogênicos.
The increasing of seafood consumption has become evident especially in the use of salmon (Salmo salar) consumed raw in oriental dishes. Consequently, it has risen up the concern related to their hygienic-sanitary characteristics due to the facility that microorganisms multiply in the meat which can expose consumers to the causative agents of a mild gastroenteritis until the death. Regarding such informations, this study was aimed to evaluate microbiological characteristics of salmon by quantifying microrganisms heterotrophic mesophiles, total coliforms and thermotolerant. It was also evaluated the danger of transmission of Vibrio parahaemolyticus, Staphylococcus aureus, Salmonella sp., Escherichia coli and Aeromonas sp. on the fish muscle and contributed to technical informations to create a Brazilian regulations about specific microbiological standards for consumption of raw seafood. Thirty-one samples of salmon were collected, 16 chilled and 15 frozen, from the retail market in cities of the northeast region of São Paulo State. The results show populations of mesophilic heterotrophic microorganisms ranging from 1.0 x 10 and 3.9 x 106 CFU/g, in total and fecal coliforms, respectively, 32.24% and 19.33% of samples and Aeromonas sp. in 35.48% of samples ranging population of 2.0 x 102 to 8.0 x 103 CFU/g. Staphylococcus aureus was present in one sample and were not found Vibrio parahaemolyticus, Salmonella sp. and Escherichia coli. The results may serve as a parameter for the establishment of a microbiological standard for the consumption of raw seafood and also as a warning to consumers of the product for the presence of potentially pathogenic microorganisms.
The increasing of seafood consumption has become evident especially in the use of salmon (Salmo salar) consumed raw in oriental dishes. Consequently, it has risen up the concern related to their hygienic-sanitary characteristics due to the facility that microorganisms multiply in the meat which can expose consumers to the causative agents of a mild gastroenteritis until the death. Regarding such informations, this study was aimed to evaluate microbiological characteristics of salmon by quantifying microrganisms heterotrophic mesophiles, total coliforms and thermotolerant. It was also evaluated the danger of transmission of Vibrio parahaemolyticus, Staphylococcus aureus, Salmonella sp., Escherichia coli and Aeromonas sp. on the fish muscle and contributed to technical informations to create a Brazilian regulations about specific microbiological standards for consumption of raw seafood. Thirty-one samples of salmon were collected, 16 chilled and 15 frozen, from the retail market in cities of the northeast region of São Paulo State. The results show populations of mesophilic heterotrophic microorganisms ranging from 1.0 x 10 and 3.9 x 106 CFU/g, in total and fecal coliforms, respectively, 32.24% and 19.33% of samples and Aeromonas sp. in 35.48% of samples ranging population of 2.0 x 102 to 8.0 x 103 CFU/g. Staphylococcus aureus was present in one sample and were not found Vibrio parahaemolyticus, Salmonella sp. and Escherichia coli. The results may serve as a parameter for the establishment of a microbiological standard for the consumption of raw seafood and also as a warning to consumers of the product for the presence of potentially pathogenic microorganisms.
Descrição
Palavras-chave
Pescados - Microbiologia, Salmões, Bacterias patogenicas, Seafood, Salmon, microbiology, Pathogenic bacteria
Como citar
NESPOLO, Natália Maramarque. Características microbiológicas de salmão (Salmo salar) comercializado em algumas cidades da região nordeste do estado de São Paulo. 2009. x, 67 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2009.