Evaluation of quality of foods commercialized in self-service restaurants / Avaliação da qualidade físico-química de alimentos comercializados em restaurantes self-service

The food consumption outside home boundary has been increasing in Brazil, which is a risk factor for product quality and consumers health.. Therefore, the purpose of this study was to evaluate the quality of foods served in the balconies of self-service restaurants in the Praia Grande city, Sao Paulo State, Brazil, in 2006 year. 154 samples were collected by the Sanitary Vigilance of that city, such as water, frying oil, crude salad and cooked mayonnaise salad. The analyses in the water were odor, color, turbidity, pH, fluoride, free residual chlorine and total residual chlorine. In frying oils, acidity, polar compounds, temperature and oil test were investigate. In the crude salad was analyzed microscopically, and finally in the cooked mayonnaise salad was done sensorial analyses and macroscopic. All samples were analyzed in Adolfo Lutz Institute Regional Laboratory of Santos city. The results had demonstrated that 52% of the water samples were inappropriate, specially fluoride parameter; in oils 25% were inappropriate, in the crude salad was 90% of approval and in the cooked mayonnaise salad 100% of the samples had been approved. These results demonstrate the importance of a good food practices and manipulation in restaurants and the importance of an intensive plan to guarantee the quality control of the preparations commercialized in self-service and the security of the f

O consumo de alimentos fora do domicílio vem aumentando no Brasil, podendo expor a riscos sua qualidade e a saúde dos consumidores. Assim, este trabalho avaliou a qualidade físico-química dos alimentos servidos nos balcões de restaurantes self-service no município de Praia Grande/SP, em 2006. Foram coletadas 154amostras de alimentos, compreendendo água, óleo de fritura, salada crua e salada de maionese. As análises realizadas nas amostras de água foram odor, cor aparente, turbidez, pH, fluoreto, cloro residual livre e cloro residual total. Nos óleos foram analisados em laboratório a acidez e os compostos polares e, no momento da coleta, a temperatura e a prova denominada oil test. Nas saladas cruas foram realizadas análises microscópicas e, nas de maionese, análises sensoriais e macroscópicas. Os resultados obtidos demonstraram que 52% das amostras de água foram reprovadas, principalmente pelo parâmetro fluoreto; nos óleos foram25% de reprovação; já nas saladas cruas foi de 90% de aprovação e nas saladas de maionese 100% foram aprovadas. Esses resultados demonstram a importância das boas práticas de fabricação e manipulação em unidades de alimentação e que o monitoramento das preparações comercializadas em restaurantes self-service é de fundamental importância para garantir a seguridade do alimento fornecido ao consumidor.

Evaluation of the microbiological analyses in foods from the Baixada Santista involved in foodborne diseases, São Paulo, Brazil, during 2000 2006 / Análises microbiológicas de alimentos processados na Baixada Santista, envolvidos em doenças transmitidas por alimentos, no período de 2000 2006

The Instituto Adolfo Lutz - Laboratory Regional of Santos analyzed food samples sent by the municipal health surveillance services of counties belong to the Baixada Santista area, with suspect of foodborne diseases from January of 2000 to June of 2006. Different types of foods were analyzed such as chicken and pork preparations, rice, beans, chicken, mashed potatoes, heart of palm preparations, raw sausage and pork leg, raw salted pie, candies (cake, mousse, mixes for cakes); fermented milks, pasteurized milk UHT, juices. Conventional methods were used, as recommended by Compendium of Methods for Microbiological Examination of Foods APHA, 1992 and by the Brazilian Ministry of Health legislation ANVISA RDC / 12, 2001. Of the 26 analyzed food samples, 18 (69,2%) were in accordance with the sanitary legislation and 8 (30,7%) were condened because of the presence of Salmonella sp isolated from a mousse with cream and chocolate cake; Staphylococcus aureus isolated from raw and cooked chicken products; faecal coliforms were isolated from chicken and heart of palm preparations, raw chicken and soggy chicken.

O Instituto Adolfo Lutz - Laboratório Regional de Santos analisou amostras de alimentos coletadas pelas Vigilâncias Sanitárias Municipais da Baixada Santista, envolvidos em casos de doenças transmitidas por alimentos (DTAs), no período de janeiro de 2000 a junho de 2006. Foram analisados diferentes tipos de alimentos na forma de pratos prontos para consumo: coxinha de frango, arroz cozido, feijão cozido, frango, purê de batata, almôndega ao molho, recheios (calabresa, frango, palmito); embutidos (salsicha, lingüiça defumada); salgado cru; doces (bolo, mousse, mistura para bolos); bebidas (láctea, leite UHT, xaropinho, suco). A preparação das amostras para análise e as determinações analíticas foram realizadas segundo o Compendium of Methods for Microbiological Examination of Foods (APHA, 1992) e a RDC nº 12 de 2001 ANVISA, respectivamente. Das 26 amostras de alimentos analisadas, 18 (69,2%) estavam de acordo com a legislação vigente e 8 (30,7%) foram condenadas devido a presença de Salmonella sp isolada de mousse de clara de ovos e de bolo de chocolate; Staphylococcus aureus isolado de coxinhas de frango frita e crua; coliformes fecais isolados de recheios de frango e palmito, frango cru e frango ensopado.