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Bacterial pathogens

Tue, 08/14/2018 - 01:09
Available online 14 August 2018 Author(s): Lin Lin, Xinlei Wang, Ronghai He, Haiying CuiAbstractCompared with traditional thermal sterilization process, pulsed magnetic field (PMF) is a non-thermal sterilization technology with superior advantages of maintaining the nutrition and flavor of food. But little is known about its antimicrobial mechanism. To explore its antimicrobial mechanism, the...
Tue, 08/14/2018 - 01:09
Available online 13 August 2018 Author(s): Thanasak Sae-leaw, Soottawat BenjakulAbstractInhibition of Pacific white shrimp polyphenoloxidase (PPO) by the selected Thai indigenous leaf extracts (Liang, Mun-poo, cashew and lead) was comparatively studied. Cashew leaf extract (CE) showed the highest PPO inhibitory activity and copper chelating activity at all concentrations (0.025-0.5%) tested (P...
Tue, 08/14/2018 - 01:09
Available online 13 August 2018 Author(s): Xixi Zhao, Yan Zhang, Junling Shi, Yanlin Liu, Yao Lu, Ziyang LianAbstractMulti-drug resistance of foodborne pathogens has been greatly highlighted in food safety and caused a significant challenge for the development of new antibiotics and safe preservatives. The ethanol extract of Phomopsis sp. XP-8 broth showed significant inhibitory effects on multi-...
Tue, 08/14/2018 - 01:09
Available online 13 August 2018 Author(s): Kai Chen, Le-Le Shao, Yun-Feng Huo, Jia-Min Zhou, Qing Zhu, Robert C. Hider, Tao ZhouAbstractIn order to explore the potential of a novel tyrosinase inhibitor, namely the hydroxypyridinone derivative (5-hydroxy-1-octyl-4-oxo-1,4-dihydropyridine-2-carbaldehyde O-ethyl oxime, HPO) , for shrimp preservation, six bacterial isolates from shrimp (Penaeus...
Mon, 08/13/2018 - 17:00
Thorsten Brink, Veronika Leiss, Peter Siegert, Doris Jehle, Julia K. Ebner, Carsten Schwan, Aliaksei Shymanets, Sebastian Wiese, Bernd Nürnberg, Michael Hensel, Klaus Aktories, Joachim H. C. Orth Salmonella enterica serotype Typhimurium (S. Typhimurium) is one of the most frequent causes of food-borne illness in humans and usually associated with acute self-limiting gastroenteritis. However, in...
Mon, 08/13/2018 - 17:00
Trang H. Phan, Lisanne M. van Leeuwen, Coen Kuijl, Roy Ummels, Gunny van Stempvoort, Alba Rubio-Canalejas, Sander R. Piersma, Connie R. Jiménez, Astrid M. van der Sar, Edith N. G. Houben, Wilbert Bitter The pathogen Mycobacterium tuberculosis employs a range of ESX-1 substrates to manipulate the host and build a successful infection. Although the importance of ESX-1 secretion in virulence is...
Mon, 08/13/2018 - 17:00
Fernanda Almeida, Amanda Aparecida Seribelli, Marta Inês Cazentini Medeiros, Dália dos Prazeres Rodrigues, Alessandro de MelloVarani, Yan Luo, Marc W. Allard, Juliana Pfrimer Falcão Whole genome sequencing (WGS) has been used as a powerful technology for molecular epidemiology, surveillance, identification of species and serotype, identification of the sources of outbreaks, among other purposes...
Mon, 08/13/2018 - 11:10
The bacterial flagellum has evolved as one of the most remarkable nanomachines in nature. It provides swimming and swarming motilities that are often essential for bacterial life cycle and for pathogenesis. Many bacteria such as Salmonella and Vibrio species use flagella as an external propeller to move to favorable environments, while spirochetes utilize internal periplasmic flagella to drive a...
Sat, 08/11/2018 - 01:12
Loïc Deblais, Benjamin Lorentz, Joy Scaria, Kakambi V. Nagaraja, Muhammad Nisar, Dale Lauer, Shauna Voss, Gireesh Rajashekara
Sat, 08/11/2018 - 01:12
Available online 10 August 2018 Author(s): Niroshan Thanthrige-Don, Oliver Lung, Tara Furukawa-Stoffer, Cody Buchanan, Tomy Joseph, Dale L. Godson, John Gilleard, Trevor Alexander, Aruna AmbagalaAbstractRespiratory and enteric diseases continue to be two major causes of economic losses to the cattle industry worldwide. Despite their multifactorial etiology, the currently available diagnostic...
Sat, 08/11/2018 - 00:00
Abstract This study aimed to evaluate the technical feasibility of supercritical carbon dioxide (sc-CO2) treatment for Vibrio parahaemolyticus inactivation in oysters (Crassostrea gigas) and in nutrient broth. For this purpose, a variable-volume reactor was used as experimental system and a 23 factorial design was adopted considering the mass ratio between carbon dioxide and the...
Fri, 08/10/2018 - 17:00
Ross C. Beier, Roger B. Harvey, Charles A. Hernandez, Michael E. Hume, Kathleen Andrews, Robert E. Droleskey, Maureen K. Davidson, Sonia Bodeis-Jones, Shenia Young, Sara E. Duke, Robin C. Anderson, Tawni L. Crippen, Toni L. Poole, David J. Nisbet Campylobacter coli is a bacterial species that is a major cause of diarrheal disease worldwide, and Campylobacter spp. are among the top 5 foodborne...
Fri, 08/10/2018 - 01:10
Sylvie M. Roche, Sébastien Holbert, Jérôme Trotereau, Samantha Schaeffer, Sonia Georgeault, Isabelle Virlogeux-Payant, Philippe Velge
Fri, 08/10/2018 - 01:10
Publication date: November 2018Source: LWT, Volume 97Author(s): Greici Bergamo, Cláudio Dias Timm, Natália Rodrigues Carvalho, Elizabete Helbig, Eliezer Avila GandraAbstractThe objective of this study was to compare three methods for detection of Salmonella spp., the first recommended by the Brazilian Ministry of Agriculture, Livestock and Supply - known as MAPA -, the second described by Annex D...
Fri, 08/10/2018 - 01:10
Publication date: November 2018Source: LWT, Volume 97Author(s): Lin Lin, Yulin Zhu, Haiying CuiAbstractCampylobacter jejuni (C. jejuni) contamination on poultry surface posed great threats to meat industry and human health. In order to control the propagation of C. jejuni, the gelatin nanofibers containing thyme essential oil/β-cyclodextrin ε-polylysine nanoparticles (TCPNs) were engineered....
Wed, 08/08/2018 - 01:09
Grith M. Maigaard Hermansen, Anders Boysen, Thøger J. Krogh, Arkadiusz Nawrocki, Lars Jelsbak, Jakob Møller-Jensen
Wed, 08/08/2018 - 01:09
Publication date: Available online 7 August 2018 Innovative Food Science & Emerging TechnologiesAuthor(s): Višnja Stulić, Tomislava Vukušić, Anet Režek Jambrak, Višnja Bačun-Družina, Dean Popović, Jasna Mrvčić, Zoran HercegAbstractHigh voltage electrical discharge (gas and liquid) plasmas are new developing techniques used for food and water decontamination. This study investigates the...
Wed, 08/08/2018 - 01:08
Qinghua Ye, Qingping Wu, Shuhong Zhang, Jumei Zhang, Guangzhu Yang, Juan Wang, Liang Xue, Moutong Chen
Tue, 08/07/2018 - 14:31
Agents that remodel the tumor microenvironment (TME), prime functional tumor-specific T cells, and block inhibitory signaling pathways are essential components of effective immunotherapy. We are evaluating live-attenuated, double-deleted Listeria monocytogenes expressing tumor antigens (LADD-Ag) in the clinic. Here we show in numerous mouse models that while treatment with nonrecombinant LADD...
Tue, 08/07/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 9, Page 1459-1466, September 2018.
Tue, 08/07/2018 - 01:07
Available online 6 August 2018 Author(s): Jiehong Fang, Yang Shen, Daofeng Qu, Jianzhong HanAbstractThe pork production chain and raw pork products are among the most important reservoirs of antimicrobial-resistant microorganisms. This study investigated the antimicrobial resistance profiles and integrons and their associated gene cassettes of Escherichia coli isolated from a large-scale...
Mon, 08/06/2018 - 20:00
AbstractSalmonella enterica subsp. enterica serovar Gallinarum biovar Gallinarum (S. Gallinarum) and biovar Pullorum (S. Pullorum) are gram-negative bacteria, members of the most important infectious pathogens, and have caused common problems in the poultry industry, especially in the developing countries. O- and H-antigen specific anti-sera are commonly for slide and tube agglutination tests to...
Sat, 08/04/2018 - 01:13
Available online 3 August 2018 Author(s): Amira Klibi, Abderrazek Maaroufi, Carmen Torres, Ahlem JouiniAbstractThe prevalence of methicillin-resistant (MR) and methicillin-susceptible (MS) coagulase-negative staphylococci (CNS) and the implicated mechanisms of resistance and virulence were investigated in milk of mastitis cows. In addition the presence of SCCmec type is analyzed in MR...
Fri, 08/03/2018 - 01:12
Godfrey Bwire, Amanda K. Debes, Christopher G. Orach, Atek Kagirita, Malathi Ram, Henry Komakech, Joseph B. Voeglein, Ambrose W. Buyinza, Tonny Obala, W. Abdullah Brooks, David A. Sack
Fri, 08/03/2018 - 01:12
Publication date: Available online 2 August 2018Source: Author(s): Hin-chung Wong, Tzu-Yun Wang, Chu-Wen Yang, Chung-Tao Tang, Chingwen Ying, Chun-Hsiung Wang, Wei-Hau ChangAbstractVibrio parahaemolyticus is a human enteropathogenic bacterium and is also pathogenic to shrimp and finfish. In a search for a biocontrol agent for V. parahaemolyticus and other pathogenic Vibrio species, a lytic phage...
Fri, 08/03/2018 - 01:12
Publication date: November 2018Source: LWT, Volume 97Author(s): Karuna Kharel, Veerachandra K. Yemmireddy, Charles J. Graham, Witoon Prinyawiwatkul, Achyut AdhikariAbstractIn-shell pecans are susceptible to microbial contamination. This study was performed to investigate feasibility of using hot water treatment as a kill-step for food-borne pathogens during pecan shelling. In-shell pecans were...
Thu, 08/02/2018 - 20:00
Salmonella enterica, serovar Enteritidis (S. Enteritidis), an important zoonotic foodborne pathogen, can affect the microbiota of the chicken intestine and cause many enteric diseases, such as acute gastroenterit...
Thu, 08/02/2018 - 00:00
Abstract The accumulation of taste-active compounds during ripening determines the taste of fermented meats; however, the contribution of defined starter cultures to glutamate during sausage ripening remains unknown. This study investigated the role of lactic acid bacteria and Staphylococcus carnosus on the accumulation of free amino acids during dry sausage fermentation. A...
Wed, 08/01/2018 - 11:00
Historically, piscine francisellosis in various warm-, temperate-, and cold-water fish hosts has been attributed to Francisella noatunensis. From 2015 to 2016, an undescribed Francisella sp. was recovered during mortality events in cultured spotted rose snapper (Lutjanus guttatus) off the Pacific coast of Central America. Despite high mortality and emaciation, limited gross findings were observed...
Wed, 08/01/2018 - 11:00
Vibrio parahaemolyticus is a widespread bacterium in the marine environment and is responsible for gastroenteritis in humans. Foodborne infections are mainly associated with the consumption of contaminated raw or undercooked fish and shellfish. The aim of this study was to determine the antimicrobial resistance, virulence factors, and genetic profiles of V. parahaemolyticus isolates from seafood...
Wed, 08/01/2018 - 11:00
Quantitative information regarding the presence of Escherichia coli, intestinal enterococci, and Clostridium perfringens in poikilotherms is notably scarce. Therefore, this study was designed to allow a systematic comparison of the occurrence of these standard fecal indicator bacteria (SFIB) in the excreta of wild homeothermic (ruminants, boars, carnivores, and birds) and poikilothermic (...
Wed, 08/01/2018 - 11:00
Campylobacter jejuni is recognized as an important causative agent of bacterial gastroenteritis in the developed world. Despite the identification of several factors contributing to infection, characterization of the virulence strategies employed by C. jejuni remains a significant challenge. Bacterial autotransporter proteins are a major class of secretory proteins in Gram-negative bacteria, and...
Wed, 08/01/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 9, Page 1425-1431, September 2018.
Wed, 08/01/2018 - 01:12
Publication date: Available online 1 August 2018Source: Microbial Risk AnalysisAuthor(s): Marta Hernández, David Rodríguez-Lázaro, Antonio Valero, Vasco Cadavez, Ursula Gonzales-BarronAbstractContamination of raw poultry meat with foodborne pathogens could occur because of improper handling at primary production and slaughterhouse levels. Low microbial prevalence data often consists of a high...
Wed, 08/01/2018 - 01:10
Available online 31 July 2018 Author(s): Cameron A. Bardsley, Renee R. Boyer, Steven L. Rideout, Laura K. StrawnAbstractFresh herbs are popular commodities that generally undergo minimal processing. Salmonella and Escherichia coli O157:H7 survival has been observed on herbs; however, little data exists on the survival of Listeria monocytogenes on herbs. The purpose of this study was to evaluate...
Wed, 08/01/2018 - 00:00
The food-borne diseases triggered by Escherichia coli O157: H7 (E. coli O157: H7) have become a life-threatening problem for tens of thousands of people around the world in the past few decades. Therefore, a rapid, simple, and user-friendly biosensing label to monitor E. coli O157: H7 has become necessary and important. In this work, carboxyl functionalized graphene quantum...
Wed, 08/01/2018 - 00:00
Food contamination caused by Staphylococcus aureus is a major problem worldwide, and more accurate and sensitive methods suitable for field detection are vital for S. aureus surveillance and control. Traditional methods for microbiological detection and identification are time-consuming and laborious. Although polymerase chain reaction-based methods are effective, the need...
Wed, 08/01/2018 - 00:00
Abstract Salmonella enterica serovar Enteritidis (SE) is a communicable zoonotic bacterium. Macrophages are essential for Salmonella survival, transmission, and infection. In this study, selective capture of transcribed sequences (SCOTS) was used to screen genes preferentially expressed by SE during contact with macrophages from different hosts. We found 57 predicted genes and...
Wed, 08/01/2018 - 00:00
Abstract The aim of this study was to investigate the efficacy of some decontaminant agents on the survival of Salmonella Typhimurium and Listeria monocytogenes with different attachment periods to chicken drumstick with skin and skinless breast meat. For this purpose, S. Typhimurium and L. monocytogenes were given periods of 0.5 (30 s), 20 and 210 min to attach to the chicken...
Tue, 07/31/2018 - 12:01
The type 6 secretion system (T6SS) is a nanomachine used by many Gram-negative bacteria, including Vibrio cholerae, to deliver toxic effector proteins into adjacent eukaryotic and bacterial cells. Because the activity of the T6SS is dependent on direct contact between cells, its activity is limited to bacteria growing on solid...
Tue, 07/31/2018 - 01:19
Carmen H. Puga, Elias Dahdouh, Carmen SanJose, Belen Orgaz
Tue, 07/31/2018 - 01:19
Julio Parra-Flores, Fabiola Cerda-Leal, Alejandra Contreras, Nicole Valenzuela-Riffo, Alejandra Rodríguez, Juan Aguirre

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