Foodborne pathogens and microbiological characteristics of raw milk soft cheese produced and on retail sale in Brazil
| Autor: | Maria Beatriz Tassinari Ortolani, Paula Mendonça Moraes, Gabriela Nogueira Viçosa, Anderson Keizo Yamazi, Luís Augusto Nero |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Quality Control
Salmonella Microorganism Staphylococcus Colony Count Microbial Microorganisms Food Contamination Biology medicine.disease_cause Applied Microbiology and Biotechnology Microbiology Enterobacteriaceae Listeria monocytogenes Cheese medicine Escherichia coli Animals Humans Food microbiology Food science Pathogenic Raw milk Hygiene Food Inspection Coliform bacteria Bacteria Aerobic Milk Consumer Product Safety Food Microbiology Animal Science and Zoology Brazil Food Science Mesophile Food contaminant |
| Zdroj: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV |
| Popis: | The consumption of raw milk soft cheeses (RMSC), which are typically manufactured in small dairy farms under unsatisfactory hygiene conditions, is common in Brazil. Due to these production characteristics, this type of cheese is a potential carrier of pathogenic microorganisms, such as Listeria monocytogenes, Salmonella, and enterotoxin-producing Staphylococcus spp. Considering these characteristics, in this work, we aimed to detect the presence of these pathogenic microorganisms in RMC and to evaluate their microbiological quality. Fifty-five samples of this product were collected from different noninspected commercial establishments and submitted to the enumeration of mesophilic aerobes (MA), total coliforms (TC), Escherichia coli, and coagulase-positive staphylococci (CPS), and detection of L. monocytogenes and Salmonella spp. All analyzed samples were negative for Salmonella spp. and L. monocytogenes. All samples presented counts of MA higher than [10.sup.6] colony forming units/g (CFU/g; range, 3.0 x [10.sup.6] to 4.0 x [10.sup.9]). TC were present at levels between 1.0 x [10.sup.3] and 1.8 x [10.sup.8] CFU/g, and E. coli between 1.0 x [10.sup.2] and 3.5 x [10.sup.6] CFU/g. CPS were detected in 17 (30.9%) samples at levels higher than [10.sup.4] CFU/g. These results confirm the poor microbiological quality of raw milk used in the manufacturing of RMC samples, and also the inadequate production conditions. Therefore, the evaluation of microbiological safety and quality of these products must be constantly reported to alert the official agencies about the significance of proper inspection. |
| Databáze: | OpenAIRE |
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