Consulta: creatorFacets:"Costa,Marisa da"
Registros recuperados: 6
Data/hora: 11/06/2024 08:03:13

Sanitary quality, occurrence and identification of Staphylococcus sp: in food services
Provedor de dados: Brazilian Journal of Microbiology
Autores: Mello,Jozi Fagundes de; Rocha,Laura Braga da; Lopes,Ester Souza; Frazzon,Jeverson; Costa,Marisa da.
Sanitary conditions are essential for the production of meals and control of the presence of pathogensis important to guarantee the health of customers. The aim of this study was to evaluate the sanitary quality of food services by checking the presence of thermotolerant coliforms, Staphylococcus sp. and evaluate the toxigenic potential from the latter. The analysis was performed on water, surfaces, equipment, ready-to-eat foods, hands and nasal cavity of handlers in seven food services. The water used in food services proved to be suitable for the production of meals. Most food, equipment and surfaces showed poor sanitary conditions due to the presence of thermotolerant coliforms (60.6%). Twenty-six Staphylococcus species were identified from the 121...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food service; Sanitary quality; Staphylococcus sp.; Staphylococcal enterotoxin.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300036

Molecular analysis of the iap gene of Listeria monocytogenes isolated from cheeses in Rio Grande do Sul, Brazil
Provedor de dados: Brazilian Journal of Microbiology
Autores: Mello,Jozi Fagundes de; Einsfeldt,Karen; Frazzon,Ana Paula Guedes; Costa,Marisa da; Frazzon,Jeverson.
The polymorphic region sequences in the iap gene were analyzed in 25 strains of Listeria monocytogenes isolated from cheeses in the state of Rio Grande do Sul, and compared with reference strains. This investigation distinguished two clusters of L. monocytogenes: I (20 strains) and II (5 strains).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Iap gene; Cheese; TN amino acids.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100033

Comparison of different selective enrichment steps to isolate Salmonella sp. from feces of finishing swine
Provedor de dados: Brazilian Journal of Microbiology
Autores: Michael,Geovana Brenner; Simoneti,Roselis; Costa,Marisa da; Cardoso,Marisa.
A two-phase study was conducted to compare the efficacy of several enrichment selective-broth steps associated to different plating media for recovery of Salmonella sp. from finishing swine feces. In a first phase, Rappaport-Vassiliadis broth (RV) incubated at 42ºC, Tetrathionate Müller-Kauffmann broth at 37ºC (TMK37) and 42ºC (TMK42), and Selenite Cystine broth (SC) at 37ºC, in combination with three selective plating media Rambach agar (RA), Xylose-Lysine-Tergitol 4 agar (XLT4), and Brilliant-Green Phenol-Red Lactose Sucrose agar (VB) were compared for recovery of Salmonella from artificially contaminated swine feces. In a second phase, RV, TMK37, and TMK42, associated with XLT4 and VB , were tested with naturally contaminated swine feces. In this study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella sp.; Selective enrichment; Swine.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200009

Qualidade bacteriológica de queijos artesanais comercializados em estradas do litoral norte do Rio Grande do Sul, Brasil
Provedor de dados: Ciência Rural
Autores: Zaffari,Cristina Bergman; Mello,Jozi Fagundes; Costa,Marisa da.
O consumo de queijo artesanal, vendido em estabelecimentos de beira de estrada, é comum no Estado do Rio Grande do Sul. Geralmente estes produtos não são fabricados em acordo com as boas normas de fabricação e podem constituir perigo à saúde do consumidor. Objetivou-se, com o presente trabalho, verificar a qualidade bacteriológica de queijos artesanais comercializados em estradas litorâneas por meio da contagem de coliformes e pesquisa de Listeria spp. e Brucella spp. Foram analisados 80 queijos, sendo 62 do tipo Colonial, dez do tipo Provolone, seis do tipo Ricota e dois do tipo Caccio Cavallo. No momento da coleta, 71% das amostras não estavam sob refrigeração. Todas as amostras apresentaram contagens de coliformes totais e, destas, 62 foram testadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caccio Cavallo; Colonial; Provolone; Ricota; Coliformes; Listeria monocytogenes; Brucella spp.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000300040

Microbial contamination in industrial tofu
Provedor de dados: Ciência Rural
Autores: Ribeiro,Thaís Teresa Brandão Cavalheiro; Costa,Géssica; Costa,Marisa da.
ABSTRACT: This study aimed to evaluate the microbiological quality of tofu sold in supermarkets in Porto Alegre/Brazil. Bacteria counts were performed for Bacillus cereus , mesophilic, coliforms and Staphylococcus coagulase positive and negative. The presence of Listeria sp. was also evaluated. Two different brands of tofu (A and B) were collected, one lot per month, for six months. Five samples from each lot were analyzed. All lots presented mesophilic aerobic counts above 4.3x105CFU g-1. Four of the six lots from brand A and all lots from brand B showed E. coli and/or Staphylococcus coagulase positive counts above the Brazilian law accepted limits. The Staphylococcus coagulase negative counts were higher than those of coagulase positive in all lots. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soy cheese; Mesophile; Coliforms; Staphylococcus; Coagulase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300751

Sorotipos de Salmonella isolados em uma propriedade de suínos de terminação no Sul do Brasil
Provedor de dados: Ciência Rural
Autores: Michael,Geovana Brenner; Simoneti,Rosalis; Cardoso,Marisa Ribeiro de Itapema; Costa,Marisa da.
Em uma granja de suínos, foram isolados quinze sorotipos diferentes de Salmonella. Dois dos sorotipos isolados, Mbandaka e Tennessee, foram também encontrados na ração fornecida aos animais. Este estudo demonstrou a diversidade de sorotipos que podem estar presentes em uma granja e a necessidade de um melhor entendimento da epidemiologia da infecção por Salmonella.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Sorotipos; Suínos.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000300026