Quantification and identification of Escherichia coli, Pseudomonas aeruginosa and Aeromonas hydrophila in water dairy farms / QuantificaÃÃo e identificaÃÃo de Escherichia coli, Pseudomonas aeroginosa e Aeromonas hydrophila em Ãgua de propriedades leiteiras

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Water quality plays a key role in both milk production and milk products manufacturing. It serves as vehicle to a wide number of microorganisms, inclunding pathogenic agents. The aim of this work was to verify the microbiological quality of water utilized in milk production in twenty five dairy farms of the region of Lavras â Minas Gerais. Samples were collected in three periods of the year: the first between March and April, the second between August and September and the last one between October and November, which corresponded the seasons of autumn, winter and spring, respectively. Microbiological analyses were conduced to quantify total and thermotolerant coliforms and to quantify, isolate and identify Escherichia coli, Pseudomonas aeruginosa, Aeromonas hydrophila in function of their biochemical profile. Escherichia coli was present in water of 52% of the properties, in all seasons. P. aeruginosa was found in 16% of the properties, in all season except spring and A. hydrophila was detected in 8% of the properties, mainly in the seasons of autumn and spring. In conclusion the low microbiologycal quality of water utilized in milk properties, in the region of Lavras, can be considered a negative factor in the milk production, mainly becouse of the presence of some waterborn spoilage and pathogenic bacteria such as Escherichia coli, Pseudomonas aeruginosa and Aeromonas hydrophila.

ASSUNTO(S)

nenhuma abaixo Ãgua quality qualidade water leite milk

ACESSO AO ARTIGO

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