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Hig. aliment; 32(284/285): 104-110, Set.-Out.2018. tab

Artigo em Português | VETINDEX | ID: vti-20900

Resumo

O acondicionamento de bebidas carbonatadas em embalagens de alumínio e o aumento do consumo, intensifica a preocupação com relação à contaminação da superficie a ter contato com a boca e à necessidade da higienização das embalagens. O objetivo deste trabalho foi avaliar a contaminação microbiológica, por meio da pesquisa de coliformes totais, coliformes termotolerante, Escherichia coli, contagem total de bactérias aeróbias mesófilas e contagem total de bolores e leveduras, na superficie superior externa de latas de cervejas e de refrigerantes, refrigerados comercializadas em bares, restaurantes, ambulantes e quiosques; bem como avaliar a influência do selo de alumínio na proteção contra a contaminação em latas de cerveja. Foram avaliadas 90 latas de alumínio, sendo 30 seladas e 30 não seladas contendo cerveja e 30 latas não seladas contendo refrigerante. Os resultados mostraram que 34% das amostras estavam contaminadas por coliformes totais, sendo observado valor igualou superior a 2400 NMP/cm2 em uma amostra de cerveja selada e cerveja não selada, adquiridas de ambulante, e uma amostra não selada adquirida de bar. Quanto a coliformes termotolerante 2,2% das embalagens estavam contaminadas, sendo este detectado em duas amostras de cerveja não selada (4 e 7 NMP/cm2) proveniente de bar. Não foi detectada Escherichia coli nas amostras analisadas. Bactérias aeróbias mesófilas foram detectadas em 84 (93,3%) amostras, sendo a maior contagem observada em uma amostra de refrigerante adquirida de quiosque, com o valor de 2,8xl()3 UFC/cm2.(AU)

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The packaging of carbonated beverages in aluminum packaging and the increase in consumption increases the concern with regard 10 contamination of the surface to have contact with the mouth and the need for hygiene of the packages. The objective of this study was to evaluate the microbiological contamination of the external surface of beers and refrigerated cans, commercialized in bars, restaurants, street vendors and kiosks; as well as to evaluate the influence of the aluminum seal in the protection against contamination in beer can so the following analyzes were performed: total coliforms, thermotolerant coliforms, Escherichia coli, count of mesophilic aerobic bacteria and counts of molds and yeasts. Ninety aluminum cans were evaluated, of which 30 were sealed and 30 unsealed containing beer and 30 unsealed cans containing refrigerant. The results showed that 34% of samples were contaminated by total coliforms, with a value of 2400 NMP / em' being observed in a sample of sealed beer and unsealed beer, purchased on the street, and an unsealed sample purehased from the bar. Regarding thermotolerant coliforms, 2.2% of the paekages were contaminated, being detected in two samples of unsealed beer (4 and7 NMP / em') from the bar. No Escherichia coli was detected in lhe analyzed samples. Mesophilic aerobic bacteria were detected in 84 (93.3%) samples, the "highest observedin a sample of kiosk purchased refrigerant, with a value of 2.8xl03 CFU / em. Contamination by molds and yeasts was observed in 59 (65.5%) samples, the highestcount being 2. 7xl 03 CFU / em', observed in an unsealed beer package. It was concluded that sealed orunsealed cans had levels of similar contamination, indicating that the seal does not promote protection against contamination and the samples that presented the highest contamination were those refrigerated in styrofoam boxes with water and ice.(AU)

Biblioteca responsável: BR68.1

Localização: BR68.1