Research Publications (Food Safety)

Author(s): Katesaraporn Nuankeaw, Boonyanoot Chaiyosang, Thanapat Suebrasri, Somdej Kanokmedhakul, Saisaamorn Lumyong, Sophon Boonlue

The Salmonella enterica subsp. diarizonae serovar 61:k:1,5,(7) (SASd) has been found to be host-adapted to sheep, with a high prevalence in sheep herds worldwide. Infections are usually sub-clinical, however the ...

Poultry vaccine programs are important for control of Salmonella infections. Although there are vaccines for Salmonella Enteritidis, Salmonella Typhimurium and Salmonella Typhi, there are no vaccines for Salmonella Infantis which has an increased rate in the world.

This study aims to describe the content of polymeric matrix components under different incubation temperatures and pH levels. Optimal biofilm production of 15 S. Virchow isolates occurred following the incubation in LB−NaCl for 72 h, at pH 6.6 and 20 °C.

This study was designed to compare the differentially expressed proteins between antibiotic-sensitive and antibiotic-resistant Salmonella Typhimurium, Klebsiella pneumonia, and Staphylococcus aureus. The susceptibilities of wild-type (WT), ciprofloxacin (CIP) and/or oxacillin (OXA)-induced, and clinically isolated resistant (CCARM) S. Typhimurium (STWT, STCIP, and STCCARM), K. pneumoniae (KPWT, KPCIP, and KPCCARM), and S.

Author(s): Bárbara Martín-Maldonado, Laura Montoro-Dasi, Maria Teresa Pérez-Gracia, Jaume Jordá, Santiago Vega, Francisco Marco-Jiménez, Clara Marin

Author(s): Marc. K. Kouam, Herman M.F Biekop, Bridget Katte, Alexis Teguia

Microcins are low-molecular-weight, ribosomally produced, highly stable, bacterial-inhibitory molecules involved in competitive, and amensalistic interactions between Enterobacteriaceae in the intestine.

Author(s): Sofia Griselda Cuggino, Isabel Bascón Villegas, Francisco Rincón, Alejandra Pérez Agostini, Guiomar Posada-Izquierdo, Javier Marugán, Cristina Pablos Carro, Fernando Pérez-Rodríguez

The aim of this study was to examine the resistome characteristics of Salmonella spp. Contamination found in raw retail beef, pork, and chicken samples collected in Hanoi, Vietnam. Approximately 28% (25/90) of samples tested carried Salmonella bacteria. A total of 13/25 (52%) of these Salmonella bacteria were resistant to at least one antibiotic and 9/25 (36%) of the isolates were found to be multidrug resistant.

Author(s): Hangjin Zhang, Yanyun Zhao, Chuting Gong, Shunshan Jiao

Author(s): A.A.M. Pereira, F.S. Prestes, A.C.M. Silva, M.S. Nascimento

Author(s): Gökhan Kürşad İncili, Pınar Karatepe, Osman İrfan İlhak

Author(s): Hossein Haghighi, Serge Kameni Leugoue, Frank Pfeifer, Heinz Wilhelm Siesler, Fabio Licciardello, Patrizia Fava, Andrea Pulvirenti

Salmonella is a leading cause of foodborne disease and is often associated with the consumption of foods of animal origin. In this study, sixty-six Salmonella isolates were obtained from 631 raw meat samples purchased at small retail suppliers in Hubei Province, China. The most prevalent Salmonella serotypes were Thompson (18.2%) and Agona (13.6%).

The genome of a multidrug-resistant (MDR) Salmonella enterica subsp. enterica serovar I 4,[5],12:i:– isolate from the 2015 U.S. pork outbreak was sequenced. The complete nucleotide sequence of USDA15WA-1 is 5,031,277 bp, including Salmonella genomic island 4 encoding tolerance to multiple metals and an MDR module inserted in the fljB region.

Author(s): Runze Huang, Haiqiang Chen

Salmonella enterica serovar Typhimurium (S. Tm) is a major intracellular pathogen that infects humans and animals, and its survival and growth in macrophages is essential for its pathogenicity. More than 50 putative regulatory proteins are encoded by the S. Tm genome, but the functions of these regulatory proteins in mediating S. Tm pathogenicity are largely unknown.

Dairy manure, a by-product in the dairy industry, is also a potential source of nutrients for crops. However, improper application of biological soil amendments of animal origin can be a source of contamination with enteric foodborne pathogens. A 2-year field study was conducted to evaluate impacts of dairy manure fertilizer application on the microbial safety of red raspberry (Rubus idaeus L) production.

Salmonella Typhimurium is an enteric pathogen that causes acute and chronic infections in humans and animals. One-week-old germ-free piglets were orally colonized/infected with the Salmonella Typhimurium LT2 strain or its isogenic rough ΔrfaL, ΔrfaG or ΔrfaC mutants with exactly defined lipopolysaccharide (LPS) defects.

ABSTRACT Salmonellae represent one of the most common bacterial infection reagents in both humans and animals. For detection and epidemiological elucidation of Salmonella infections, determination of Salmonella serotypes and differentiation between different Salmonella isolates is crucial.

Most nontyphoidal Salmonella (NTS) illnesses in the United States are thought to be foodborne. However, transmission routes likely vary among the different serotypes. We developed a relative ranking of NTS serotypes according to the strength of their association with foodborne transmission.

Salmonella is among the pathogens on the high global priority lists for monitoring for studies on the discovery of new antimicrobials and understanding of how antimicrobial resistance (AMR) develops. AMR in connection with antibiotic usage patterns has been considered as a strong factor and contributor to the AMR pool.

Colistin (polymyxin E) is a membrane-destabilizing antibiotic used against Gram-negative bacteria. We have recently reported that the outer membrane prevents the uptake of antibacterial chlorophyllin into Gram-negative cells. In this study, we used sub-toxic concentrations of colistin to weaken this barrier for a combination treatment of Escherichia coli and Salmonella enterica serovar Typhimurium with chlorophyllin.