Dinâmica da carga microbiana da sala de desossa em um matadouro frigorífico de Goiânia-GO, durante a jornada de trabalho

• Autor(a) principal: MARRA, Kelly Nobre
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/918
• topic: carne, desossa, qualidade microbiológica; meat, deboning, microbiologic quality; CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::TECNOLOGIA DE ALIMENTOS

The meat is a food of high nutrition value and easy to damage. The deboning process, if it´s not realized in appropriated hygienic-sanitary can compromise the microbiologic quality of this noble product. The present study was realized with the major objective of monitor the dynamics of microbial load in the deboning room of a slaughterhouse - Goiânia´s - GO cold store, during a work journey. The samples were collected in different times being the first, before the beginning of the activities, the second two hours after the first, the third two hours after the second, the fourth two hours after the third and the fifth two hours after the fourth. The sampling sites were: tables surface, knives and knifegrinders, meat pieces, water from sterilizers and air environment. At the end of each day work there was collected a sample of each of the 6 points sampled at 5 different times, totaling 30 samples per day and 180 at the end of the experiment. It was analyzed the counting of mesophylic, psychrotrophic, Enterobacteriaceae, anaerobic bacteria and lactic acid, in addition to the determination of the most probable number of fecal coliforms and Escherichia coli, as 62 of IN MAP (BRAZIL, 2003). The tables, knives, knifegrinders surfaces, as well as, meat pieces, water sterilizers and the air from the deboning room, in general, presented low levels of bacterial contamination. Except the counting of mesophylic in tables, knives and knifegrinders which showed 80%, 40% and 100%, respectively, the results above the limits set by Decision 471 of MCE 2001. The levels of contamination in the deboning room by mesophylic microorganisms, psychrotrophic, fecal coliforms, Escherichia coli, Enterobacteriaceae, lactic acid and anaerobic bacteria, do not differ, within each species or group of indicators, regardless of the time of the day work. Relatively, on the counting of mesophylic in tables, 74% of bacterial growth is related to the time of the day work. In knives, 85% of Enterobacteriaceae in knifegrinders, 61% of mesophylic, 74% of psychrotrophic and 98% of the anaerobes also have this contact. In meat pieces 97% of the MPN of Escherichia coli and the water of sterilizers, 82% of mesophiles can be explained by the time of the day work