7 documents found, page 1 of 1
Influence of the salt concentration on action mechanisms of natamycin against m...
Serafini, Kamila Ferreira Costa; Alencar, Ernandes Rodrigues de; Ribeiro, Jaqueline Lamounier; Ferreira, Márcia de AguiarThe objective of this study was to evaluate the influence of salt concentration on action of natamycin on important microorganisms in food manufacturing as this preservative has been used in immersion baths in several dairy products in the country. Strains of Candida albicans, Escherichia coli and Staphylococcus aureus were inoculated at different saline and peptone water concentrations and received natamycin t...
Qualidade físico-química e microbiológica de leite de cabra produzido no Distri...
Pádua, Felipe Salgado de; Couto, Emanuel Pereira; Nero, Luis Augusto; Ferreira, Márcia de AguiarO objetivo desse trabalho foi avaliar a qualidade físico-química e microbiológica do leite de cabra produzido no Distrito Federal, Brasil. As amostras foram coletadas diretamente dos tetos e em pool de cada três animais (n=40) e de leite de conjunto (n=10). Nas análises físico-químicas, os resultados médios foram: gordura (animais: 3,01% ± 0,679, conjunto: 4,45% ± 1,223); sólidos não gordurosos (animais: 9,24% ...
PFGE characterisation and adhesion ability of Listeria monocytogenes isolates o...
Galvão, Newton Nascentes; Chiarini, Eb; Destro, Maria Teresa; Ferreira, Márcia de Aguiar; Nero, Luís AugustoListeria monocytogenes is a pathogen capable of adhering to many surfaces and forming biofilms, which may explain its persistence in food processing environments. This study aimed to genetically characterise L. monocytogenes isolates obtained from bovine carcasses and beef processing facilities and to evaluate their adhesion abilities. DNA from 29 L. monocytogenes isolates was subjected to enzymatic restriction...
Evaluation of Petrifilm system compared with traditional methodology in count o...
Souza, Loiane Mayra Jacó de; Costa, Anna Carolina; Nero, Luis Augusto; Couto, Emanuel Pereira; Ferreira, Márcia de AguiarThe objective of this study was to evaluate the applicability of the Petrifilm plates to enumerate microbial groups in sheep milk. Samples of sheep milk (n = 30) were plated simultaneously, to enumerate mesophilic aerobes, total coliforms, lactic acid bacteria, Staphylococcus aureus and Escherichia coli, using convencional reference protocols and Petrifilm™ plates. The results were compared using McNemar's test...
PFGE characterisation and adhesion ability of Listeria monocytogenes isolates o...
Galvão, Newton Nascentes; Chiarini, Eb; Destro, Maria Teresa; Ferreira, Márcia de Aguiar; Nero, Luís AugustoListeria monocytogenes is a pathogen capable of adhering to many surfaces and forming biofilms, which may explain its persistence in food processing environments. This study aimed to genetically characterise L. monocytogenes isolates obtained from bovine carcasses and beef processing facilities and to evaluate their adhesion abilities. DNA from 29 L. monocytogenes isolates was subjected to enzymatic restriction...
LEITE ORGÂNICO PRODUZIDO NO DISTRITO FEDERAL: AVALIAÇÃO DA QUALIDADE FÍSICO-QUÍ...
Garcia, Mauro Eduardo Toledo Alves; Couto, Emanuel Pereira; Ferreira, Márcia de AguiarA produção leiteira convencional utiliza diversas substâncias químicas, como antibióticos, muitas vezes de forma indiscriminada. Nesse contexto, surge a produção orgânica de leite cujo mercado tem aumentado consideravelmente no mundo todo, por exigência e mudança de perfil do consumidor. A presente pesquisa teve como objetivo avaliar a qualidade do leite orgânico cru e pasteurizado produzido no Distrito Federa...
Milk contamination in different points of the dairy process. ii) mesophilic, ps...
Santana, Elsa Helena Walter de; Beloti, Vanerli; Müller, Ernest Eckehardt; Ferreira, Márcia de Aguiar; Moraes, Luciane Bilia de; Pereira, Mykel StepanniPsychrotrophics microorganisms are able to multiply under refrigeration temperatures. They can produce heat-resistant extracellular enzymes that cause organoleptic and structural changes in milk and dairy products. With the objective of determining the frequency of microorganisms in the dairy process, four farms were evaluated in Londrina city – Brazil and different points were assessed. Mesophilic (48hs at 35o...