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Open Access Staphylococcus enterotoxigênicos em alimentos in natura e processados no estado de Pernambuco, Brasil Enterotoxigenic Staphylococcus in nature and processed foods in state of Pernambuco, Brazil

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A contaminação de alimentos tem aumentado a cada ano, e atualmente representa um risco potencial para a saúde humana. Staphylococcus spp. foi isolado de alimentos processados e in natura e identificados através dos teste de Gram, catalase, coagulase, DNAase, termonuclease, acetoína (VP) e metabolismo de carboidratos (glicose, maltose e manitol). Foram selecionadas cepas com evidente reação de termonuclease, e realizada análise de enterotoxinas estafilocócicas, por teste imunoenzimático (VIDAS - Staph Enterotoxin - bioMerieux). Reação positiva de enterotoxinas estafilocócicas foram produzidas por S. aureus em camarão, queijo de coalho e macarrão e S. intermedius em peixe cozido e pasta de alho. Observou-se SCP (EstafilococosCoagulase Positiva) em queijo de coalho. Contaminação por Staphylococcus spp.ocorreu durante os estágios de produção ou na estocagem dos alimentos, produzindo toxinas. Conclui-se que estes alimentos representam risco à saúde humana se não forem observadas práticas adequadas de higiene no seu manuseio e no armazenamento.
Food contamination has increased in the recent years and actually represents a serious risk for human health. The occurrence of Staphylococcus spp. in nature and processed foods were identified by Gram test, catalase, coagulase, DNAase, acetoin production (AP) and by assays of carbohydrate metabolism (glucose, maltose and mannitol). Strains of Staphylococcus spp were selected by thermonuclease reaction and analysis of staphylococcal enterotoxins, detected by immunoenzymatic assays (VIDAS - Staph Enterotoxin - bio Merieux). Positive reaction for staphylococci enterotoxin was produced by S. aureus in shrimps; farmhouse cheese and macaroni mass; S intermedius in cooked fish and garlic paste. SCP (Staphylococci Coagulase Positive) were observed in farmhouse cheese. Contamination by Staphylococcus sppoccurred during food production and storage. We can conclude that practices of hygiene need to be observed during food production and storage.
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Document Type: Research Article

Publication date: January 1, 2002

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