914 resultados para Leite fermantado Microbiologia
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Letras - FCLAS
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Pós-graduação em Zootecnia - FMVZ
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Pós-graduação em Zootecnia - FMVZ
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This paper reports the results of an extension project carried out at Unesp/Veterinary Medicine course in Araçatuba city with milk farmers of the region. The aim of the project was to supply information to farmers concerning to good quality milk production and, at the same time, to follow up the evolution of milk quality parameters, according to the current Brazilian legislation. Every 45 days, approximately, lectures were presented to milk farmers in Araçatuba city region, approaching chemical and microbiological composition of milk, prevention and detection of mastitis, hygiene proceedings in milking and conservation of milk, cleaning and sanitization operations of facilities and equipments and prevention of adulteration. During the intervals between lectures, milk samples were collected from collective milk cooling tanks and analyzed for microbiological, hygienic and physicochemical tests. The main inadequacies in milk quality were high total bacteria and somatic cells counts, low solids contents and water addition. These problems did not proceed to betterment during the project time. So, it was concluded that the time for instruction of farmers was not enough for a progress in the quality of the milk produced in the region, pointing out the need in continuing this kind of work.
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Brazil is one of the largest milk producers in the world, with an estimated total production of 37 billion liters in 2014. Of this total, 33% is not inspected, being destined for the informal market. Objective: The aim of this study was to collect and analyze data on raw milk consumption in the city of Araraquara (SP, Brazil). Methods: Regular milk consumers were provided with exploratory questionnaires in locations chosen for convenience. The reproducibility of each question was tested by Kappa statistics. Associations of interest were 2 detected by the chi-squared (χ ) or Fisher's exact test. Statistical significance was established when p0.05. Results: Most of the volunteers (97.6%) reported consuming milk daily, the type of milk chosen most, mainly for ease of purchase, being boxed UHT. Regarding raw milk, 15.3% of volunteers said they consume it, the greatest consumption being observed among subjects with complete secondary or higher education. The majority of the participants reported knowing of the possibility of diseases being transmitted by unprocessed milk. Most respondents pointed to "flavor" as the main reason for consumption. Only 15.3% reported that someone in their house had become ill from drinking milk, and only 4.1% attributed this to the ingestion of raw milk. Conclusion: It was found that 15.3% of consumers drink raw milk in the city of Araraquara, which is more than the expected proportion in a medium sized city located in the state of São Paulo.
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Pós-graduação em Genética e Melhoramento Animal - FCAV
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Brucellosis is a zoonosis caused by bacteria of the genus Brucella. Man infection occurs through contact with reproductive secretions as placenta and its lochia, semen and penile secretion of infected animals or by consuming unpasteurized milk and dairy products. With the objective of investigating the presence of bacteria in milk, 30 samples of raw milk sold illegally in the region of Botucatu, São Paulo, Brazil, as well as 50 samples of milk delivered to a dairy industry previously to its pasteurization were evaluated by the polymerase chain reaction (PCR) technique. Of the 80 samples analyzed, 10 samples (12.5%) were positive and 70 (87.5%) were negative. Among the positive samples, 5 (16.6%) were from illegal traders and other 5 (10%) were obtained from the dairy industry. Brucella spp. positivity shows that the pathogen is representatively present in Botucatu, São Paulo, Brazil, and the risk associated to public health due to the commercialization of illegal products without pasteurization is real.
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Mastitis is an acute or a chronic inflammation of the udder, represented for physical, chemical and bacteriological milk alterations. It is notable that ovine milk represents high economic importance, and it can be used in the production of cheeses and other derivates, contributing for the farmer’s recipe enlargement. However, the mastitis in animals can determine the reduction of milk quantity and quality in infected animals. This may determine lambs’ weight loss and increase animal’s mortality. By the other hand, considering Public Health issues, mastitis can cause milk nutrients losses and promote the microorganisms’ multiplication that may lead to diarrheas and to other zoonosis in humans. This study aimed to evaluate 159 sheep mastitis status in 20 small farms located in Bauru (SP) region. Of the 309 colected samples, in 97 (31.4%) were isolated microorganisms of the genus Staphylococcus sp., which them 27.5% being coagulase negative Staphylococcus and 3.9% coagulase positive Staphylococcus. Of 177 isolates, 97 (54.8%) were represented by the genus Staphylococcus sp., which them 57 (58.8%) from pure culture and 40 (41.2%) in association. Most agents isolated were sensitive to antibiotics used in the test. Thus, we could verify the isolation of infectious microorganisms such as coagulase positive and negative Staphylococcus and, as well in dairy cattle, preventive measures to obtain hygienic milk are extremely important in order to get a final product with quality and safe in food and microbiological point of view.
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This study aimed to analyze the energy efficiency ratings and cost of farming families producing milk in the city of Pardinho (SP). The hypothesis that guides the study is that energy expenditure may be coincident with the economic expenditure showing that there is a relationship between these flows, which can be sustainable or not. To better define the producers studied criteria were used in the official system of rural credit FEAP. Through primary data obtained by the speeches, the itineraries were reconstituted technical detailing the operations employed. Thus, we found two producers with different technical routes. The producer was the one who got one of the highest efficiencies 8.66 and 1.48 respectively. Related to the efficiency, we can see that are close related and when there is a broader idea of the allocation of energy resources and, thus, a better view of the sustainability of the agro ecosystem.