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Bacterial pathogens

Thu, 04/18/2019 - 10:31
Pomegranate peel is rich in polyphenols which are known to have antibacterial and antifungal properties. Summary Pomegranate peel (PoP) is a byproduct of the fruit juice processing industry, comprising nearly 30–40% of fruit portion. PoP is rich in polyphenols (phenolic acids, tannins and flavonoids particularly anthocyanins) which are known to have diverse biological functions including...
Thu, 04/18/2019 - 10:31
The effect of pressure, extraction time and ethanol concentration on some bioactive compounds extraction from yellow prickly pear peels was measured. The ethanol concentration showed the highest impact, followed by high pressure and then by the extraction time. The models developed by RSM showed high correlations, good fitting and adequacy to describe the experimental data. Summary The main...
Thu, 04/18/2019 - 10:31
Application of orange lipases for plant oil biotransformation to increase biological activities. Summary The aim of this study was to show that abundant and inexpensive plant oils can be biotransformed to increase biological activity (antioxidant, antimicrobial and cytotoxicity) through hydrolysis reaction catalysed by lipases. We tested homemade and commercial lipases through the...
Thu, 04/18/2019 - 10:31
Graphical abstract of low‐salt solid‐state fermentation of Yunnan oil furu. Summary The effect of reducing salt on the microflora, enzymatic activity and structural, textural and sensory properties of Yunnan oil furu was studied. Oil furu with different salt content, including 11 (control), 9%, 7% and 5%, were prepared. The results showed that lower salt increased fungus and lactic acid...
Thu, 04/18/2019 - 10:05
Listeria monocytogenes is one of the most common foodborne pathogens. Poultry meat and products are of the main vehicles of pathogenic strains of L. monocytogenes for human. Poultry products are part of the regular diet of people and, due to nutrient content, more content of protein, and less content of fat, gain more attention. In comparison with red meat, poultry meat is more economical. So, it...
Thu, 04/18/2019 - 01:13
Available online 16 April 2019 Author(s): Wenxin Liu, Chaowen Yuan, Liguo Zhang, Yufei FengAbstractThe objective of this study was to establish a novel isothermal amplification method for detection of heat-labile enterotoxin (LT-I)-producing Escherichia coli. Loop-mediated isothermal amplification (LAMP), cross-priming amplification (CPA), and isothermal multiple-self-matching-initiated...
Thu, 04/18/2019 - 01:13
Publication date: Available online 16 April 2019 Innovative Food Science & Emerging TechnologiesAuthor(s): Clarissa Detomi de Albuquerque, Sébastien Curet, Lionel BoillereauxAbstractThis study coupled a 3D-CFD and heat transfer finite elements model with the microbial inactivation approach proposed by Geeraerd, Herremans, and Van Impe (2000). The CFD-heat transfer model was developed using...
Wed, 04/17/2019 - 20:00
Antimicrobial Resistance, Virulence Determinants, and Biofilm Formation of Enterococcus Species From Ready-to-Eat Seafood Etinosa O. Igbinosa1,2* and Abeni Beshiru1 1Applied Microbial Processes and Environmental Health Research Group, Department of Microbiology, Faculty of Life Sciences, University of Benin, Benin City, Nigeria 2Sustainable Development Office, University of Benin, Benin City,...
Wed, 04/17/2019 - 20:00
The serious human pathogen, E. coli serotype O157:H7, continues to gain antibiotic resistance, posing a public health threat. While this serotype’s genome has been sequenced, the role of 25% of its genes remains ...
Wed, 04/17/2019 - 20:00
Salmonella enterica Growth Conditions Influence Lettuce Leaf Internalization Yulia Kroupitski1, Rachel Gollop1, Eduard Belausov2, Riky Pinto1 and Shlomo Sela (Saldinger)1* 1Microbial Food-Safety Research Unit, Department of Food Science, Agricultural Research Organization, The Volcani Center, Rishon LeZion, Israel 2Confocal Microscopy Unit, Institute of Plant Sciences, Agricultural Research...
Wed, 04/17/2019 - 09:15
Abstract Commercial fermentation for bulk preservation of cucumbers relies on natural microbiota and approximately 1 M sodium chloride (NaCl) brines, resulting in large volumes of high‐salt wastewater. An alternative process utilizing 0.1 M calcium chloride (CaCl2) as the only salt was developed to eliminate NaCl from fermentation brines for reduced environmental impact. This study determined the...
Wed, 04/17/2019 - 00:00
Coxiella burnetii is a gram-negative and polymorphic rod bacterium that causes Q fever, a common zoonotic disease distributed worldwide. Widespread occurrences of the disease outbreaks indicate the importance of coordinated animal and human health efforts to control these outbreaks. Different tests are available to determine the C. burnetii infection status of a flock, but false negative...
Tue, 04/16/2019 - 20:00
Large-Scale Genomic Analyses and Toxinotyping of Clostridium perfringens Implicated in Foodborne Outbreaks in France Abakabir Mahamat Abdelrahim, Nicolas Radomski, Sabine Delannoy, Sofia Djellal, Marylène Le Négrate, Katia Hadjab, Patrick Fach, Jacques-Antoine Hennekinne, Michel-Yves Mistou and Olivier Firmesse* Université PARIS-EST, Agence Nationale de Sécurité...
Tue, 04/16/2019 - 20:00
Structural and Proteomic Changes in Viable but Non-culturable Vibrio cholerae Susanne Brenzinger1*, Lizah T. van der Aart1, Gilles P. van Wezel1, Jean-Marie Lacroix2, Timo Glatter3 and Ariane Briegel1* 1Department of Microbial Biotechnology & Health, Institute of Biology Leiden, Leiden University, Leiden, Netherlands 2Unité de Glycobiologie Structurale et Fonctionnelle, UMR CNRS 8576...
Tue, 04/16/2019 - 12:44
Abstract Thyme oil nanoemulsions (TONa and TONb), having 219 nm and 163 nm diameters, were successfully prepared by using sonication technique. Zeta potential (ZP) and polydispersity indexes (PDI) of TONa and TONb were defined to be 19.77, 0.24 and −24.80, 0.054, respectively. It was determined that zeta size values of TONs might have played a role on the inhibition of Pseudomonas aeruginosa,...
Tue, 04/16/2019 - 12:44
Abstract Thyme oil nanoemulsions (TONa and TONb), having 219 nm and 163 nm diameters, were successfully prepared by using sonication technique. Zeta potential (ZP) and polydispersity indexes (PDI) of TONa and TONb were defined to be 19.77, 0.24 and −24.80, 0.054, respectively. It was determined that zeta size values of TONs might have played a role on the inhibition of Pseudomonas aeruginosa,...
Tue, 04/16/2019 - 06:51
Abstract Aims The aim of this study was the molecular identification of Salmonella enterica serovar Infantis isolated from poultry samples and their antimicrobial resistance and virulence profiling. Methods and Results A total of 149 isolates, belonging to genus Salmonella, originally isolated from 340 suspected poultry post mortem specimens reported by us earlier were preliminary identified...
Tue, 04/16/2019 - 01:13
Publication date: Available online 14 April 2019Source: Author(s): Sharif Najafi, Ehsan Sanati, Mahsa Khademi, Fateme Abdorrazaghi, Reza Kazempoor Mofrad, Zahra RezasoltaniAbstractIn recent years, there is a growing interest in new medical applications of botulinum toxin, including pain control, osteoarthritis treatment, and wound healing. While clinical applications of botulinum toxin seem...
Tue, 04/16/2019 - 01:10
Available online 13 April 2019 Author(s): Minerva Rivera-Reyes, Jonathan A. Campbell, Catherine N. CutterAbstractShiga toxin-producing Escherichia coli (STEC) are known to adapt and survive acidic conditions. Acid-adaptation also may result in cross-protection against other stressors present in foods, such as reduced water activity (aw), refrigeration conditions, or the presence of antimicrobials...
Mon, 04/15/2019 - 15:00
Abstract The role of free‐ranging wildlife in the epidemiology of enteropathogens causing clinical illness in humans and domestic animals is unclear. Salmonella enterica and anti‐microbial resistant bacteria have been detected in the faeces of raccoons (Procyon lotor), but little is known about the carriage of these bacteria in other sympatric meso‐mammals. Our objectives were to: (a) report the...
Mon, 04/15/2019 - 11:36
Bacterial lipoproteins are globular proteins anchored to the extracytoplasmic surfaces of cell membranes through lipidation at a conserved N-terminal cysteine. Lipoproteins contribute to an array of important cellular functions for bacteria, as well as being a focal point for innate immune system recognition through binding to Toll-like receptor 2 (TLR2) heterodimer complexes. Although...
Mon, 04/15/2019 - 11:25
This study investigated genetic relatedness among Staphylococcus aureus from livestock, their carcass’ surfaces after slaughter, personnel, and equipment of a Greek abattoir. Genotyping was performed using PFGE, MLST, spa, and SCCmec. Antimicrobial susceptibility was determined according to EUCAST guidelines. Genes encoding staphylococcal enterotoxins (SEs) and Panton‐Valentine leukocidin (PVL)...
Mon, 04/15/2019 - 08:53
Abstract Aims This study aimed to gather information on farming practices employed in organic lettuce fields in Sao Paulo, Brazil and associate these practices with the microbiological characteristics of the products. Methods and Results Practices were surveyed using a questionnaire applied in ten farms, where 200 heads of lettuce were collected and submitted to enumeration of total coliforms...
Mon, 04/15/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 5, Page 775-784, May 2019.
Mon, 04/15/2019 - 00:00
Toxins, Vol. 11, Pages 225: Application of an Endothelial Cell Culture Assay for the Detection of Neutralizing Anti-Clostridium Perfringens Beta-Toxin Antibodies in a Porcine Vaccination Trial Toxins doi: 10.3390/toxins11040225 Authors: Olivia K. Richard Sven Springer Jacqueline Finzel Tobias Theuß Marianne Wyder Beatriz Vidondo Horst Posthaus Background: Beta-toxin (CPB) is...
Sun, 04/14/2019 - 01:12
Available online 13 April 2019 Author(s): Cangliang Shen, Lacey Lemonakis, Xiaoli Etienne, KaWang Li, Wentao Jiang, Jeremy M. AdlerAbstractThis study compares the efficacy of commercial antimicrobials to inactivate unstressed and stress-adapted Campylobacter jejuni on broiler wings using immersion and electrostatic spray and evaluates the economic feasibility of the two methods. Overnight...
Sun, 04/14/2019 - 01:12
Available online 12 April 2019 Author(s): Olouwafemi Mistourath Mama, Elena Gómez-Sanz, Laura Ruiz-Ripa, Paula Gómez, Carmen TorresAbstractThis work aimed to determine the prevalence, diversity, antibiotic-resistance phenotype/genotype and virulence factors in staphylococci of farm-animals. Nasal samples of 117 farm-animals (calve: 72; lamb: 37; goat: 8) were collected from one slaughterhouse in...
Sat, 04/13/2019 - 00:00
Abstract In this work, the nano composites of carrageenan/AgNPs/Laponite were prepared and coated on the oxygen plasma surface modified polypropylene film to enhance the barrier and adhesion properties. The mechanical, barrier, adhesion and antimicrobial properties were also studied to use for food packaging applications. The polypropylene film was surface modified with oxygen...
Sat, 04/13/2019 - 00:00
Abstract The main objective of the study is to assess a comparative antibacterial potential of three new bacteriocins produced by Pediococcus sp. through partial characterization and mode of action against some food spoilage bacteria. The bacteriocins from three different Pediococcus sp. viz. Pediococcus sp. LAB 33 (HQ185406), Pediococcus sp. LAB 41 (HQ185407), and Pediococcus...
Fri, 04/12/2019 - 01:14
Available online 10 April 2019 Author(s): A. Szczerba-Turek, P. Socha, A. Bancerz-Kisiel, A. Platt-Samoraj, K. Lipczynska-Ilczuk, J. Siemionek, K. Kończyk, E. Terech-Majewska, Wojciech SzwedaAbstractThe aim of the study was to investigate the presence of Shiga toxin-producing Escherichia coli (STEC) in the wild boar population of north-eastern Poland, and to evaluate the potential health risk...
Fri, 04/12/2019 - 01:12
Available online 11 April 2019 Author(s): Yu Hou, Gaozhe Cai, Lingyan Zheng, Jianhan LinAbstractThe key to prevent and control the spread of foodborne diseases is rapid screening and early warning of pathogenic bacteria in foods. In this study, a microfluidic biosensor using magnetic nanoparticles (MNPs) and catalases was developed for rapid and sensitive detection of Salmonella typhimurium....
Fri, 04/12/2019 - 01:12
Available online 10 April 2019 Author(s): Bradley J. Taylor, Adam R. Quinn, A.I. KataokaAbstractFood manufacturers and distributors are tasked with applying science-based approaches and preventative controls to minimize the risk of foodborne illness from Listeria monocytogenes. Concerns regarding “no growth” low-moisture foods (LMFs), defined as ingredients and finished goods with a water...
Fri, 04/12/2019 - 01:12
Available online 9 April 2019 Author(s): Robson V. de Souza, Andrew D. Younger, Mickael Teixeira Alves, Carlos.J.A. CamposAbstractClassification of shellfish production areas (SPAs) based on monitoring for faecal indicator organisms is undertaken in many shellfish producing countries to assess the risk of contamination with pathogens and determine the level of post-harvest treatment prior to sale...
Fri, 04/12/2019 - 01:12
Available online 9 April 2019 Author(s): Isaac Omwenga, Gabriel O. Aboge, Eric S. Mitema, George Obiero, Catherine Ngaywa, Nicholas Ngwili, George Wamwere, Martin Wainaina, Bernard BettAbstractStaphylococcus aureus (SA) food poisoning results from consumption of preformed S. aureus enterotoxins in food. The enterotoxins are one of the most important virulence factors of the bacterium. The risk...
Fri, 04/12/2019 - 01:12
Publication date: July 2019Source: LWT, Volume 109Author(s): Fernanda T. Carvalho, Bruno S. Vieira, Deyse C. Vallim, Larrayane A. Carvalho, Ricardo C.T. Carvalho, Rodrigo C.L. Pereira, Eduardo E.S. FigueiredoAbstractA trial was conducted to determine the genotypic and phenotypic profiles of Listeria monocytogenes (LM) isolated from chicken meat and chicken-meat processing environment in an export...
Fri, 04/12/2019 - 01:12
Publication date: Available online 11 April 2019Source: LWTAuthor(s): Ping Zhang, Pengfei Zhang, Junrui Wu, Dongbing Tao, Rina WuAbstractDa-jiang with unique flavor is one of Chinese traditionally fermented soybean foods, which is naturally fermented. However, many shortcomings make it unable to achieve industrial production. At present, development of novel biological starter is one of effective...
Thu, 04/11/2019 - 20:00
Campylobacter jejuni is a major food-borne pathogen and a worldwide health threat. Utilizing different virulence factors, C. jejuni invades the host’s intestinal epithelial cell layer. One important factor in thi...
Thu, 04/11/2019 - 20:00
Antimicrobial Resistance Diversity Suggestive of Distinct Salmonella Typhimurium Sources or Selective Pressures in Food-Production Animals Kate C. Mellor1,2*, Liljana Petrovska3, Nicholas R. Thomson2,4, Kate Harris3, Stuart W. J. Reid1 and Alison E. Mather5*† 1Royal Veterinary College, Hatfield, United Kingdom 2London School of Hygiene & Tropical Medicine, London, United Kingdom...
Thu, 04/11/2019 - 20:00
Environmental and Clinical Strains of Vibrio cholerae Non-O1, Non-O139 From Germany Possess Similar Virulence Gene Profiles Keike Schwartz, Jens Andre Hammerl, Cornelia Göllner and Eckhard Strauch* Department Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany Vibrio cholerae is a natural inhabitant of aquatic ecosystems globally. Strains of the serogroups O1...
Thu, 04/11/2019 - 17:00
Lester Hiley, Rikki M. A. Graham, Amy V. Jennison The virulence plasmid pSLT as exemplified the 94 Kb plasmid in Salmonella Typhimurium strain LT2 is only found in isolates of serovar Typhimurium. While it occurs commonly among such isolates recent genotyping methods have shown that it is mostly confined to certain genotypes. Although pSLT plasmids are capable of self-transmissibility under...
Thu, 04/11/2019 - 05:56
Abstract Aim To determine the protective capacity against Salmonella infection in mice of the cell‐free fraction (postbiotic) of fermented milk, produced at laboratory and industrial level. Methods and Results The proteolytic activity (PA) of five commercial cultures and eleven autochthonous Lactobacillus strains was evaluated. The DSM‐100H culture displayed the highest PA and it was selected...
Wed, 04/10/2019 - 20:00
Campylobacter jejuni Demonstrates Conserved Proteomic and Transcriptomic Responses When Co-cultured With Human INT 407 and Caco-2 Epithelial Cells Nicholas M. Negretti1, Geremy Clair2, Prabhat K. Talukdar1, Christopher R. Gourley1, Steven Huynh3, Joshua N. Adkins2, Craig T. Parker3, Colby M. Corneau1 and Michael E. Konkel1* 1School of Molecular Biosciences, College of Veterinary Medicine,...
Wed, 04/10/2019 - 11:48
Cantaloupes and honeydew melons inoculated with 107 CFU/ml Salmonella bacteria were treated with 1.5% of hydrogen peroxide (H2O2) at 20°C and minimally treated at 70°C for 3 min before storage at 5, 10, and 20°C. Salmonella bacteria recovered from the cantaloupe and honeydew melon rind surfaces averaged 4.5 and 3.9 log CFU/cm2, respectively, before antimicrobial treatments. Fresh‐cut pieces...
Wed, 04/10/2019 - 10:02
Summary Dickeya is a genus of phytopathogenic enterobacterales causing soft rot in a variety of plants (e.g. potato, chicory, maize). Among the species affiliated to this genus, Dickeya aquatica, described in 2014, remained particularly mysterious because it had no known host. Furthermore, while D. aquatica was proposed to represent a deep‐branching species among Dickeya genus, its precise...
Wed, 04/10/2019 - 10:02
Summary Dickeya is a genus of phytopathogenic enterobacterales causing soft rot in a variety of plants (e.g. potato, chicory, maize). Among the species affiliated to this genus, Dickeya aquatica, described in 2014, remained particularly mysterious because it had no known host. Furthermore, while D. aquatica was proposed to represent a deep‐branching species among Dickeya genus, its precise...

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