10 documents found, page 1 of 1
Prevalence, Antimicrobial Resistance, and Diversity of Salmonella along the Pig...
Santos Bersot, Luciano dos; Quintana Cavicchioli, Valeria; Viana, Cibeli; Konrad Burin, Raquel Cristina; Camargo, Anderson CarlosMade available in DSpace on 2020-12-10T19:46:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Control of Salmonella spp. in food production chains is very important to ensure safe foods and minimi...
Microbiological testing for the proper assessment of the hygiene status of beef...
Camargo, Anderson Carlos; Cossi, Marcus Vinícius Coutinho; Silva, Wladimir Padilha da; Bersot, Luciano dos Santos; Landgraf, Mariza; Baranyi, JózsefMicrobiological testing is an important quality management tool in the food industry. In this study, the hygiene status of beef carcasses sampled in eight Brazilian slaughterhouses was assessed by enumeration of different hygiene indicator microorganisms, and a model to establish potential associations among these counts was proposed. The carcasses (n = 464) were surface sampled at four slaughtering steps (step...
Antibiotic resistance of Listeria monocytogenes isolated from meat-processing e...
Camargo, Anderson Carlos; Castilho, Natalia Parma Augusto de; Silva, Danilo Augusto Lopes da; Vallim, Deyse Christina; Hofer, ErnestoThe present study aimed to assess the antimicrobial resistance and the presence of virulence markers in 137 Listeria monocytogenes isolates obtained from meat-processing environments, beef products, and clinical cases. All isolates were subject to molecular serogrouping and their antibiotic resistance profiles were assessed against 12 antimicrobials. In addition, isolates were subjected to detection of virulenc...
Potential Control of Listeria monocytogenes by Bacteriocinogenic Enterococcus h...
Cavicchioli, Valéria Quintana; Camargo, Anderson Carlos; Todorov, Svetoslav Dimitrov; Nero, Luís AugustoBacteriocinogenic Enterococcus hirae ST57ACC and Pediococcus pentosaceus ST65ACC strains, previously isolated from artisanal cheese, were evaluated for their safety with the aim to determine whether they could be used as beneficial strains, especially in the control of Listeria monocytogenes. Both isolates survived simulated gastrointestinal conditions and showed high levels of auto- and co-aggregation with L. ...
Low occurrence of Salmonella in the beef processing chain from Minas Gerais sta...
Cossi, Marcus Vinícius Coutinho; Burin, Raquel Cristina Konrad; Camargo, Anderson Carlos; Dias, Mariane RezendeThe present study aimed to track possible contamination sources of Salmonella spp. during bovine slaughtering. Three slaughterhouses located in Minas Gerais state, Brazil were selected and 836 samples were obtained by surface swabbing of 209 bovine carcasses at four steps of slaughtering: I) after bleeding (from the hide), II) after skinning, III) after evisceration, and IV) after end washing (performed with co...
In Vitro evaluation of bacteriocins activity against Listeria monocytogenes bio...
Camargo, Anderson Carlos; Paula, Otávio Almeida Lino de; Todorov, Svetoslav Dimitrov; Nero, Luís AugustoThe present study aimed to assess the activity of cell-free supernatant (CFS) containing bacteriocins on the formation and maintenance of biofilms developed by Listeria monocytogenes, and the associated effect of bacteriocins and ethylene-diamine-tetra-acetic acid (EDTA) on the formed biofilm. CFS from 9 lactic acid bacteria (LAB) strains was tested for inhibitory activity against 85 L. monocytogenes isolates a...
Molecular tracking of Salmonella spp. in chicken meat chain: from slaughterhous...
Dias, Mariane Rezende; Cavicchioli, Valéria Quintana; Camargo, Anderson Carlos; Lanna, Frederico Germano Piscitelli AlvarengaDue to the importance of Salmonella spp. in poultry products, this study aimed to track its main contamination routes since slaughtering reception to processing of chicken end cuts. Samples from different steps of slaughtering and processing (n = 277) were collected from two chicken slaughterhouses (Sl1 and Sl2) located in Minas Gerais state, Brazil, and subjected to Salmonella spp. detection. The obtained isol...
Uncovering the Listeria monocytogenes virulence traits
Camargo, Anderson CarlosCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Listeria monocytogenes é uma bactéria Gram-positiva comumente encontrada no ambiente de processamento de alimentos, produtos in natura e processados. Esse patógeno é reconhecido como o agente causador da listeriose, uma doença grave que afeta principalmente indivíduos de grupos de risco. O presente estudo teve como objetivo caracterizar isolados de L....
Adequacy of Petrifilm™ Aerobic Count plates supplemented with de Man, Rogosa & ...
Castilho, Natália Parma Augusto de; Okamura, Vivian Tiemi; Camargo, Anderson Carlos; Pieri, Fábio Alessandro; Nero, Luís AugustoThe present study aimed to assess the performance of alternative protocols to enumerate lactic acid bacteria (LAB) in salami. Fourteen cultures and two mixed starter cultures were plated using six protocols: 1) Petrifilm™ Aerobic Count (AC) with MRS broth and chlorophenol red (CR), incubated under aerobiosis or 2) under anaerobiosis, 3) MRS agar with CR, 4) MRS agar with bromocresol purple, 5) MRS agar at pH 5....
Caracterização fenotípica e molecular de isolados de Listeria monocytogenes obt...
Camargo, Anderson CarlosCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Listeria monocytogenes is a foodborne pathogen often associated to beef cuts and meat products. Its presence in beef cuts is usually related to cross contamination during processing, once L. monocytogenes is naturally part of its environmental microbiota. The consumption of food contaminated with this pathogen, mainly ready-to-eat products, can determ...