Qualidade microbiológica do leite cru produzido no Norte de Minas Gerais

Menezes, Isabela Rocha; Almeida, Anna Christina de; Morão, Rodrigo Pereira; Reis, Soraya Vanely; Santos, Claudinei Alves dos; Lopes, Isabella Luiza Nascimento

doi:10.4322/rbcv.2015.321

Cited by 13 publications

(13 citation statements)

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“…They hence assumed that resistant proteolytic enzymes were produced, which caused technological problems in milk and dairy products. According to MENEZES et al (2015), in the quality raw milk produced in Minas Gerais, milk samples showed high contamination by mesophilic and psychrotrophic microorganisms. These authors diagnosed that contaminations compromised the sanitary hygienic quality of milk, since the majority of the samples analyzed were not in compliance with the limits set forth by legislation either at the time of the study or presently.…”

Section: Resultsmentioning

confidence: 99%

Microbiological quality of refrigerated raw milk in the dairy farm and after transport to the processing dairy plant

2018

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Transport of cooled raw milk in bulk has greatly improved the quality of the raw material collected by dairy plants as it reduces the proliferation of mesophilic microorganisms that cause milk acidity and hinder its processing. However, refrigeration has favored the growth of psychrotrophic microorganisms which are able to grow at low temperatures (below 10ºC) and that produce heat resistant enzymes which degrade some milk components, reducing milk shelf life and causing organoleptic changes. The aim of this paper was to evaluate the microbiological quality of raw milk in dairy farms and after its transport to the processing dairy plant, through plate counting of mesophilic and psychrotrophic microorganisms. Fourteen milk samples were collected from tanks of the dairy-farming properties, and one sample was collected from their milk transport tanker at the entrance of the processing plant. Our results showed that the mean number of mesophilic microorganisms was higher in samples collected straight from the dairy farm tanks than in the samples collected from the transportation tankers at the entrance of the plant. Of the 14 sampled tanks, 64.3% were non-compliant with legislation. The sample collected from the milk transportation tanker containing milk from all properties showed a higher mean number of psychrotrophic microorganisms than the dairy farm samples. We conclude that the milk from dairy properties showed a higher amount of mesophilic microorganisms, and after transportation, at the entrance of the processing plant, there is a higher amount of psychrotrophic microorganisms.

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Section: Resultsmentioning

confidence: 99%

Microbiological quality of refrigerated raw milk in the dairy farm and after transport to the processing dairy plant

2018

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“…According to Menezes et al (2015), hygienic milking procedures, cleansing and disinfection of utensils and equipments are basic to avoid milk contamination by coliforms. Training of milk producers with regard to hygiene at all stages in the provision and commercialization of raw milk is mandatory to guarantee the safeness of the product for industrialization.…”

Section: Resultsmentioning

confidence: 99%

“…Although Brazilian law forbids selling of milk in natura, it is still common practice in Brazil, associated with cultural, regional and social factors (Bersot et al, 2010;Menezes et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Dairies use thermal processes that reduce initial microbial load of raw milk, such as pasteurization and Ultra High Temperature (UHT), to commercialize safer food with regard to sanitary hygiene and shelf time increase, bur deficient hygiene conditions during milking, handling and conservation are the main factors for decrease in milk quality produced in Brazil (Menezes et al, 2015), damaging the country´s economic development in milk production.…”

Section: Introductionmentioning

confidence: 99%

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Escherichia coli O157, Staphylococcus aureus and coliforms in crude and processed bovine milk marketed

Santos¹,

Barros²,

Silva³

et al. 2016

Afr. J. Microbiol. Res.

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Fifty-five (55) samples from five municipalities in the Recôncavo from Bahia region were analyzed between May and July 2015 to evaluate the sanitary quality and the presence of pathogens of crude and processed bovine milk samples. Psichrotrophic, mesophilic and thermophile rates and the count of Escherichia coli, E. coli O157: H7 Staphylococcus aureus and Listeria monocytogenes were done by microbiological methods rapid detection. There was a greater contamination and presence of pathogens in the raw milk when compared to processed milk. However, total coliforms were detected in 14.28%, E. coli in 7.14% and E. coli O157: H7 in 2.04% of processed milk. The enforcement by authorities against the illegal sale of raw milk and the monitoring of steps in milk production up to marketing should be mandatory.

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“…A implementação da Instrução Normativa nº 62 pelo MAPA (BRASIL, 2011) impulsionou o setor lácteo, mas, em algumas regiões do país observam-se problemas relacionados às condições higiênico-sanitárias inadequadas durante os processos de obtenção, manipulação e armazenamento do leite cru refrigerado com comprometimento da sua qualidade e inocuidade (RAMOS et al, 2014;MENEZES et al, 2015;PINTO et al, 2015;ALMEIDA et al, 2016). Além disso, ainda são detectados resíduos de antibióticos em leite o que acarreta problemas à saúde dos consumidores (NERO et al, 2007;RODRIGUES et al, 2012 (IDAF, 2013).…”

Section: Introductionunclassified

Avaliação Da Qualidade De Leite Cru Armazenado Em Tanques De Refrigeração No Município De Alegre, Espírito Santo

Neta¹,

Junqueira²,

Carneiro³

et al. 2016

RBAS

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RESUMO -Objetivou-se avaliar a qualidade microbiológica por meio da detecção de bactérias deteriorantes e patogênicas além da detecção de resíduos de antibióticos em leite cru refrigerado produzido em propriedades familiares do município de Alegre, ES. As amostras foram coletadas em quatro tanques de refrigeração coletivos. Realizou-se contagens de bactérias mesófilas e psicrotróficas mediante contagem em Ágar padrão seguido de incubação e contagem. Para a determinação de Staphylococcus spp.; de coliformes totais e E.coli utilizouse kit rápido. Para detecção de antibióticos da classe â-lactâmicos utilizou-se o kit BetaStar®, conforme metodologia descrita pelo fabricante.Verificou-se contagens médias de 1,4x10 6 UFC.mL -1 para bactérias mesófilas (BM); 6,1x10 5 UFC.mL -1 para bactérias psicrotróficas (BP); 8,5x10 4 UFC.mL -1 para coliformes totais (CT); 2,9x10 5 UFC.mL -1 para Staphylococcus spp. (Staphy) e 4,4x10 4 UFC.mL -1 para Escherichia coli (Ec). Constatou-se baixa qualidade microbiológica do leite cru refrigerado produzido na região devido ao alto grau de contaminação no produto e não foram detectados resíduos de antibióticos nas amostras. São necessários esforços por parte de todos os envolvidos na cadeia produtiva para que possam se adequar às condições de produção de forma a garantir a inocuidade e qualidade do leite e derivados, além de contribuir para a saúde dos consumidores e a sustentabilidade do setor na região.Palavras-chave: antibiótico, bactérias psicrotróficas higiene, padrões microbiológicos. QUALITY ASSESSMENT OF MILK RAW STORED IN COOLING TANKS IN ALEGRE CITY, ESPÍRITO SANTO

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Qualidade microbiológica do leite cru produzido no Norte de Minas Gerais

Cited by 13 publications

References 5 publications

Microbiological quality of refrigerated raw milk in the dairy farm and after transport to the processing dairy plant

Microbiological quality of refrigerated raw milk in the dairy farm and after transport to the processing dairy plant

Escherichia coli O157, Staphylococcus aureus and coliforms in crude and processed bovine milk marketed

Avaliação Da Qualidade De Leite Cru Armazenado Em Tanques De Refrigeração No Município De Alegre, Espírito Santo

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