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Type: Artigo de periódico
Title: Contamination profile for staphylococci and its enterotoxins and monitorization of the conditions of hygiene in a 'coalho' cheese production line
Author: Borges, MD
Nassu, RT
Pereira, JL
de Andrade, APC
Kuaye, AY
Abstract: This research aimed to evaluate the contamination by staphylococci and its enterotoxins as well as to monitor the Conditions of hygiene from a coalho cheese production like, using ATP bioluminescence assay. Staphylococcus sp. population varied from < ICFU mL(-1), in pasteurized milk to 1.5 x 10(7)CFU mL(-1) in raw milk, whereas coagulase-positive staphylococci count ranged from < ICFU mL(-1), in pasteurized milk to 5.0 x 10(6)CFU mL(-1) in raw milk. Coagulase-positive staphylococci were detected in 100% (25/25) of the row milk samples and in 8% (2/25) of cheese samples. Twelve Staphylococcus species were identified within the selected 68 isolates, being nine negative and three positive for coagulase. Raw milk samples showed a high rate of coagulase-positive, being S. aureus the most common, whereas other product samples and equipment sulfates, pieces of furniture, utensils and manipulator gloves samples presented a high frequency of coagulase-negative and low frequency of coagulase-positive. Staphylococcal enterotoxin was detected in 20% of the raw milk samples and therefore in pasteurized milk, curd and cheese. ATP measurement permitted to assess the effectiveness. of the surfaces cleaning, being considered adequate in 62.1% (36/95), "alert state" in 23.2% (22/95) and inadequate in 14.7% (14/95) of surfaces evaluated. Detection of staphylococci species with enterotoxigenic potential as well as enterotoxin presence reveal dissemination of contamination at the "coalho" Cheese production title, possibly due inappropriate Good Manufacturing Practices (GMP) from the initial milking step until the final cheese production.
Subject: pathogen
food poisoning
dairy products
Staphylococcus sp
Country: Brasil
Editor: Univ Federal Santa Maria
Citation: Ciencia Rural. Univ Federal Santa Maria, v. 38, n. 5, n. 1431, n. 1438, 2008.
Rights: aberto
Identifier DOI: 10.1590/S0103-84782008000500037
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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