Salmonella

Thu, 10/10/2019 - 03:29
Microcins are low-molecular-weight, ribosomally produced, highly stable, bacterial-inhibitory molecules involved in competitive, and amensalistic interactions between Enterobacteriaceae in the intestine. These interactions take place in a highly complex chemical landscape, the intestinal eco-active chemosphere, composed of chemical substances that positively or negatively influence bacterial...
Wed, 10/09/2019 - 03:38
Author(s): Sofia Griselda Cuggino, Isabel Bascón Villegas, Francisco Rincón, Alejandra Pérez Agostini, Guiomar Posada-Izquierdo, Javier Marugán, Cristina Pablos Carro, Fernando Pérez-RodríguezAbstractThis work aimed to study the effect of the combination of Sodium hypochlorite, the most used disinfectant by the vegetable industry, with a natural antimicrobial, benzyl-isothiocyanate (BITC),...
Tue, 10/08/2019 - 03:32
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...
Sun, 10/06/2019 - 03:36
LWT
Author(s): Hangjin Zhang, Yanyun Zhao, Chuting Gong, Shunshan JiaoAbstractRadio frequency (RF) heating has been explored as a new pasteurization technology for low-moisture foods (LMFs). This study investigated the impact of RF heating on sublethal injury of Salmonella Typhimurium in red pepper powder with different initial water activity (aw) (0.44, 0.53, 0.63 and 0.70). Red pepper powder...
Sun, 10/06/2019 - 03:36
LWT
Author(s): A.A.M. Pereira, F.S. Prestes, A.C.M. Silva, M.S. NascimentoAbstractThe aim of this study was to evaluate the behavior of Salmonella Typhimurium ATCC 14028 during peanut dry roasting after pre-adaptation to desiccation stress. To cause desiccation stress, blanched peanut kernels (aw 0.43) were inoculated with S. Typhimurium and stored at 28 °C for up to 180 days. Then, the samples were...
Sun, 10/06/2019 - 03:36
LWT
Author(s): Gökhan Kürşad İncili, Pınar Karatepe, Osman İrfan İlhakAbstractThe aim of this study was to determine the single and combined effect of chitosan and Pediococcus acidilactici (B-LC-20) on Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes in meatballs. After spiking the samples with pathogens, meatball mixture was divided into 4 groups as control, chitosan, B-LC...
Sat, 10/05/2019 - 03:36
Author(s): Hossein Haghighi, Serge Kameni Leugoue, Frank Pfeifer, Heinz Wilhelm Siesler, Fabio Licciardello, Patrizia Fava, Andrea PulvirentiAbstractThe main aim of this study was to characterize microstructural, physical, optical, mechanical, water barrier and antimicrobial properties of chitosan-polyvinyl alcohol blend films (CS-PVA) enriched with ethyl lauroyl arginate (LAE) (1–10% w/v) for...
Sat, 10/05/2019 - 03:28
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%). Frequent antimicrobial resistance was observed...
Fri, 10/04/2019 - 03:42
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.
Thu, 10/03/2019 - 03:41
Author(s): Runze Huang, Haiqiang ChenAbstractFresh produce has been identified as the transmission vehicle for many foodborne illness outbreaks every year. They could be contaminated by pathogens at any point within the farm-to-fork food chain. Washing is often used to remove dirt and pathogens on fresh produce. Moreover, an effective decontamination method is required for wash water to prevent...
Thu, 10/03/2019 - 03:33
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. In this study, we...
Thu, 10/03/2019 - 03:30
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)...
Wed, 10/02/2019 - 03:31
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. In the first part of this study, Artificial Neural Network (ANN)-assisted Fourier transform infrared (FTIR...
Wed, 10/02/2019 - 03:30
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. After 24 h, the piglets were euthanized and the...
Mon, 09/30/2019 - 17:10
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. The purposes of use, pattern of antimicrobial drug administration, as well as...
Mon, 09/30/2019 - 17:10
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...
Mon, 09/30/2019 - 17:10
For the past few decades, there has been limited progress in the development of novel antibacterials. Previously, we postulated that the gut microbiota of animals residing in polluted environments are a forthcoming supply of antibacterials. Among various species, the water monitor lizard is an interesting species that feeds on organic waste and the carcass of wild animals. Gut microbiota of the...
Mon, 09/30/2019 - 17:03
LWT
Author(s): Alonzo A. Gabriel, Katrina Moira D. Melo, Juan Carlos D. MichelenaAbstractThis study was conducted to determine the efficacy of UV-C irradiation for safety and quality of dried bay leaves. Cocktails of microorganisms of the same species were prepared and inoculated onto the leaves, which were thereafter subjected to UV-C irradiation. Results showed that all tested organisms, which...
Mon, 09/30/2019 - 16:54
Salmonella enterica is a Gram-negative human pathogen widely known to cause food poisoning. Here, the genome of S. enterica phage Shelanagig is described. Its 42,541-bp genome codes for 68 proteins, for which 33 were assigned a predicted function. Shelanagig shares high similarity at the protein level with other Salmonella phages.
Sun, 09/29/2019 - 03:31
Author(s): Ruixia Wang, Xiucai Hu, Aijun Lü, Rongrong Liu, Jingfeng Sun, Yeong Yik Sung, Yajiao SongAbstractSkin plays an important role in the innate immune responses of fish, particularly towards bacterial infection. To understand the molecular mechanism of mucosal immunity of fish during bacterial challenge, a de novo transcriptome assembly of crucian carp Carassius auratus skin upon Aeromonas...
Sun, 09/29/2019 - 03:30
Author(s): Sulaiman F. Aljasir, Catherine Gensler, Lang Sun, Dennis J. D'AmicoAbstractCheeses made from unpasteurized milk are preferred by many consumers for their complex flavors and aromas among other attributes. However, the potential presence and survival of foodborne pathogens remain a concern. There is, therefore, a need for developing practical and science-based preventive strategies to...
Sun, 09/29/2019 - 03:30
Author(s): Tanya Christidis, Matt Hurst, Wallis Rudnick, Katarina D.M. Pintar, Frank PollariAbstractSalmonella is one of the leading causes of gastro-enteric disease in Canada, second only to Campylobacter. The mean exposure of Salmonella measured in cells ingested per person per day, from 15 transmission routes, including foodborne, animal contact and waterborne routes, was estimated for Canada...
Sat, 09/28/2019 - 03:30
by Rocío Canals, Roy R. Chaudhuri, Rebecca E. Steiner, Siân V. Owen, Natalia Quinones-Olvera, Melita A. Gordon, Michael Baym, Michael Ibba, Jay C. D. Hinton We have used a transposon insertion sequencing (TIS) approach to establish the fitness landscape of the African Salmonella enterica serovar Typhimurium ST313 strain D23580, to complement our previous comparative genomic and functional...
Sat, 09/28/2019 - 03:29
Author(s): Xiaojuan Yang, Qingping Wu, Jiahui Huang, Shi Wu, Jumei Zhang, Ling Chen, Xianhu Wei, Yingwang Ye, Yu Li, Juan Wang, Tao Lei, Liang Xue, Rui Pang, Youxiong ZhangAbstractRaw vegetables have been associated with numerous foodborne Salmonella outbreaks; however, there is little epidemiological or molecular data on Salmonella contaminants of raw vegetables in China. Here, we investigated...
Sat, 09/28/2019 - 03:29
Author(s): Luigi Iannetti, Diana Neri, Gino Angelo Santarelli, Giuseppe Cotturone, Michele Podaliri Vulpiani, Romolo Salini, Salvatore Antoci, Gabriella Di Serafino, Elisabetta Di Giannatale, Francesco Pomilio, Stefano MessoriAbstractStress factors and poor animal welfare can increase the susceptibility of food-producing animals to diseases, posing microbial risks to consumers. Animal welfare...
Sat, 09/28/2019 - 03:28
Author(s): Rami H. Al-Rifai, Karima Chaabna, Thomas Denagamage, Walid Q. AlaliAbstractFood contamination with non-typhoidal Salmonella enterica (NTS) is common in the Middle East and North Africa (MENA) region. A systematic review and meta-analysis were conducted to summarize available data on the overall regional and national-specific NTS prevalence in food products in this region. Published...
Thu, 09/26/2019 - 03:27
Towards the continuous improvement of its inspection system, the Canadian Food Inspection Agency (CFIA) is developing an Establishment‐based Risk Assessment model for Hatcheries to allocate inspection resources based on the food safety risk associated with the Canadian hatcheries falling under its jurisdiction. The objectives of the current study were to identify and select critical food safety‐...
Thu, 09/26/2019 - 03:22
Considering the growing consumption of artisanal foods worldwide, we aimed to evaluate the microbial safety of Serro artisanal cheese (SAC), produced in Minas Gerais State, Brazil. This cheese is produced with raw milk using 1 of 2 natural starter cultures: “pingo” and “rala.” A total of 53 SAC samples (pingo = 8; rala = 45) were obtained from different farmers and subjected to conventional and...
Wed, 09/25/2019 - 03:27
Salmonella remains the leading cause of reported bacterial foodborne disease in China. Meat products are recognized as one of the major sources of human salmonellosis; however, there is a lack of comprehensive, quantitative data concerning Salmonella contamination of these foods. Therefore, the objectives of this study were to investigate the prevalence, bacterial load, and antimicrobial...
Wed, 09/25/2019 - 03:27
Uncertainty analysis is the process of identifying limitations in scientific knowledge and evaluating their implications for scientific conclusions. In the context of microbial risk assessment, the uncertainty in the predicted microbial behavior can be an important component of the overall uncertainty. Conventional deterministic modeling approaches which provide point estimates of the pathogen’s...
Tue, 09/24/2019 - 03:41
Type VI secretion systems (T6SSs) are highly conserved and complex protein secretion systems that deliver effector proteins into eukaryotic hosts or other bacteria. T6SSs are regulated precisely by a variety of regulatory systems, which enables bacteria to adapt to varied environments. A T6SS within Salmonella pathogenicity island 6 (SPI-6) is activated during infection, and it contributes to the...
Tue, 09/24/2019 - 03:40
Salmonella enterica serovar Goldcoast infection was rare in Taiwan; it was not detected in routine surveillance from 2004 to 2013. This serovar was first identified in 2014, but the frequency of infection remained low until 2017. From 2014 to 2016, all but one isolate was pan-susceptible. S. Goldcoast infections abruptly increased in 2018, and all isolates were multidrug-resistant (MDR). All MDR...
Tue, 09/24/2019 - 03:40
A pan-susceptible Salmonella enterica serovar Worthington isolate was detected in the stool of a man returning from Sri Lanka. Under ceftriaxone treatment, a third-generation cephalosporin (3GC)-resistant Salmonella Worthington was isolated after 8 days. Molecular analyses indicated that the two isolates were identical. However, the latter strain acquired a blaDHA-1-carrying IncFII plasmid...
Tue, 09/24/2019 - 03:38
Author(s): Anas A. Al-Nabulsi, Tareq M. Osaili, Amin N. Olaimat, Weam E. Almasri, Mutamed Ayyash, Murad A. Al-Holy, Ziad W. Jaradat, Reyad S. Obaid, Richard A. HolleyABSTRACTTahini is a popular food product in the Middle East region and is used as a major ingredient in several ready-to-eat food products. Tahini and its products have been linked to foodborne illness outbreaks and product recalls...
Tue, 09/24/2019 - 03:38
Author(s): Yishan Yang, David J. GevekeAbstractThis study investigated the effectiveness of three thermal treatments; hot air (HA), hot water immersion (HWI), and hot water spraying (HWS); alone and in combination with radio frequency (RF) on the inactivation of Salmonella Typhimurium in shell eggs. In addition, the physical quality of the treated eggs and their functional capability to produce...
Tue, 09/24/2019 - 03:38
Author(s): Zhihua Li, Ling Dong, Chi Zhao, Yongqing ZhuAbstractFermented red pepper (FRP) sauce has been eaten in worldwide for many years. The salt content and resident microbial community influences the quality of the FRP sauce and may confer health (e.g., probiotics) or harm (e.g., antibiotic resistance genes) to the consumers in some circumstances; however, the salt-mediated alteration of...
Tue, 09/24/2019 - 03:38
Author(s): Xinyao Wei, Soon Kiat Lau, Boreddy Sreenivasula Reddy, Jeyamkondan SubbiahAbstractSpray dried egg white powder (EWP) is traditionally processed by hot room treatment for a prolonged period of time (67 °C for 15 days) to enhance its functionality (foaming and gelling) and to improve microbial safety of EWP. Our prior research demonstrated that radio-frequency (RF) assisted thermal...
Tue, 09/24/2019 - 03:37
Author(s): Byron Michael Berenger, Christina Ferrato, Linda ChuiAbstractTransport media are recommended to improve the sensitivity of fecal culture, but there are limited published data comparing bacterial viability in feces stored with or without transport media. In this study, recovery of bacteria from culture-positive feces after 7 days of storage was assessed under the following conditions:...
Tue, 09/24/2019 - 03:37
Author(s): Rafael Antonio Casarin Penha Filho, Joseane Cristina Ferreira, Ana Maria Iba Kanashiro, Angelo Berchieri Junior, Ana Lúcia da Costa DariniAbstractThe number of foodborne gastroenteritis caused by nontyphoidal Salmonella (NTS) worldwide is estimated to be 80.3 million each year. Currently, antimicrobial-resistant NTS disseminated in the animal environment increases the risk of...

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