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Bacterial pathogens

Sat, 07/13/2019 - 01:05
Publication date: Available online 11 July 2019Source: Author(s): Olga S. Papadopoulou, Anthoula A. Argyri, Evangelos Varzakis, Marianthi Sidira, Yiannis Kourkoutas, Alex Galanis, Chrysoula Tassou, Nikos G. ChorianopoulosAbstractUHT bovine milk (low-fat) was inoculated with a starter culture and one adjunct strain, Lactobacillus plantarum 2035 or Lb. plantarum T571, with probiotic potential, and...
Sat, 07/13/2019 - 01:03
Available online 12 July 2019 Author(s): Aixia Xu, O. Joseph Scullen, Shiowshuh Sheen, James R. Johnson, Christopher H. SommersAbstractExtraintestinal pathogenic Escherichia coli are common contaminants in retail poultry and involved inflammatory bowel disease, urinary tract infections and meningitis in both animals and humans. They cause significantly more illnesses and deaths in humans than...
Sat, 07/13/2019 - 01:03
Publication date: December 2019 , Volume 106Author(s): Bong Sun Kim, Hyunjin Kim, Seok-Seong KangAbstractBiotransformation is an effective system to provide various beneficial effects in food processing and pharmaceutical fields. The present study evaluated the anti-bacterial and anti-inflammatory activities of lactic acid bacteria (LAB)-biotransformed mulberry fruit extract (MFE) against...
Sat, 07/13/2019 - 00:00
Toxins, Vol. 11, Pages 407: Development and Characterization of Monoclonal Antibodies to Botulinum Neurotoxin Type E Toxins doi: 10.3390/toxins11070407 Authors: Candace S. Bever Miles Scotcher Luisa W. Cheng Robert M. Hnasko Larry H. Stanker Botulism is a devastating disease caused by botulinum neurotoxins (BoNTs) secreted primarily by Clostridium botulinum. Mouse bioassays...
Fri, 07/12/2019 - 01:04
Available online 10 July 2019 Author(s): Hatice Yazgan, Yesim Ozogul, Esmeray Kuley BogaAbstractThe antimicrobial activities of lemon oil based nanoemulsion and two different concentrations of lemon essential oil (100% and 10%) on food-borne pathogens (Staphylococcus aureus, Klebsiella pneumoniae, Enterococcus faecalis and Salmonella Paratyphi A) and fish spoilage bacteria (Photobacterium...
Fri, 07/12/2019 - 01:04
Available online 11 July 2019 Author(s): Davy Verheyen, Maria Baka, Simen Akkermans, Torstein Skåra, Jan F. Van ImpeAbstractThe development of more accurate predictive models that describe the microbial kinetics of mild thermal treatments of foods requires knowledge concerning the influence of food microstructure and initial cell conditions on foodborne pathogens’ inactivation kinetics. The...
Fri, 07/12/2019 - 01:04
Publication date: December 2019 , Volume 106Author(s): Yulin Zhu, Changzhu Li, Haiying Cui, Lin LinAbstractAs a non-thermal sterilization method, pulsed light (PL) has been widely applied in food industries to control the microbial contamination, however little is known about the antimicrobial mechanism of PL. This study deeply investigated the antimicrobial mechanism of PL against Escherichia...
Fri, 07/12/2019 - 01:04
Publication date: December 2019 , Volume 106Author(s): Nataly Peña-Gómez, María Ruiz-Rico, Isabel Fernández-Segovia, José M. BaratAbstractNovel non-thermal preservation technologies are needed given consumers' demand for minimally processed high quality food products with a long shelf life. In this work, novel filtering materials based on silica microparticles functionalized with essential oil...
Fri, 07/12/2019 - 01:04
Publication date: Available online 3 July 2019Source: LWTAuthor(s): Aman Sharma, D.P. Shivaprasad, Komal Chauhan, Neetu Kumra TanejaAbstractMicrobial adaptations and growth at low temperatures impose challenge to safety of highly perishable food products like paneer. Survival of Escherichia coli under refrigeration necessitates investigations into additional hurdles. Use of phytochemicals offer a...
Fri, 07/12/2019 - 01:04
Publication date: November 2019Source: LWT, Volume 114Author(s): Tushar Verma, Jeyamkondan SubbiahAbstractSingle-screw extrusion is an effective tool in reducing microbial contamination, however, limited data exists on the efficacy of twin-screw extrusion for microbial inactivation. The purpose of this study was to evaluate the effect of fat (5–15%), moisture content (14–26%), temperature (55–85...
Fri, 07/12/2019 - 01:04
Publication date: October 2019Source: LWT, Volume 113Author(s): Alejandra Londero, Magdalena Costa, Lucía Galli, Victoria Brusa, Luciano Linares, Mónica Prieto, Gerardo LeottaAbstractWe characterized L. monocytogenes strains isolated from ground beef (n = 40) and butcher shop environmental (n = 99) samples before and after implementing improvement actions. Strains were serotyped and subtyped by...
Fri, 07/12/2019 - 01:04
Publication date: Available online 8 July 2019Source: LWTAuthor(s): Jian Sun, Chen-chen Cao, Mei-qin Feng, Xing-lian Xu, Guang-hong ZhouAbstractThe aim of this study was to determine the technological and safety properties of coagulase-negative staphylococci (CNS) with high protease activity isolated from traditional Chinese fermented sausages in 10 different regions. According to the criteria of...
Fri, 07/12/2019 - 01:04
Publication date: Available online 8 July 2019Source: LWTAuthor(s): Aiping Liu, Yuping Wang, Xingzhe Cai, Shan Jiang, Xiaowen Cai, Li Shen, Yuntao Liu, Guoquan Han, Shujuan Chen, Jia Wang, Wenjuan Wu, Cheng Li, Shuliang Liu, Xiaohong WangAbstractSalmonella strains pose a great challenge to food safety. The exploration of bacteriophage endolysins can be a valuable measure for the prevention of...
Thu, 07/11/2019 - 20:00
Hemolysis of bacteria is an important phenotype used for typing and characterizing strains with specific biomarkers and even a virulence factor in bacterial pathogenesis. In Vibrio cholerae, hemolysin HlyA is res...
Thu, 07/11/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 8, Page 1272-1277, August 2019.
Thu, 07/11/2019 - 00:00
Abstract The effect of dietary aflatoxin B1 (AFB1) and Salmonella Enteritidis infection on intestinal permeability was investigated. Two hundred 1-day-old male Ross 308 broiler chickens were randomly divided into 4 treatments of 5 replicates each (10 birds per replicate), which were fed ad libitum for 3 weeks with the following treatments: control, chickens fed an AFB1-free diet...
Thu, 07/11/2019 - 00:00
Abstract The effect of the cell-free culture supernatants (CFCSs) from different Lacobacillus spp. on growth ability of Cronobacter sakazakii ATCC 29544 was investigated by time-killing studies. The antimicrobial effect was evaluated using crude and 2.5 × concentrated CFCSs. Most of the CFCSs showed a dose-dependent antimicrobial activity, with the greatest C. sakazakii growth...
Wed, 07/10/2019 - 20:00
Gastrointestinal illnesses continue to be a global public health risk. Exposure to foodborne Salmonella directly or indirectly through consumption of ready-to-eat seafood can be an important route of infection to humans. This study was designed to estimate the population cell density, prevalence, virulence gene signatures and antibiotic resistance of Salmonella serovars from ready-to-eat shrimps...
Wed, 07/10/2019 - 13:33
Sunflower soapstock inclusion in the diet of fattening lambs modifies meat quality traits and food‐safety. Summary Thirty‐two lambs were finished on a total mixed ration (TMR) pelleted alone (00SS) or including sunflower soap stock (SS): 15SS (15 g SS per kg TMR), 30SS (30 g SS per kg TMR) and 60SS (60 g SS per kg TMR). Lambs (8 per group) were slaughtered at 27 kg live weight. Colour evolution...
Wed, 07/10/2019 - 06:59
Abstract Aims The purposes were to evaluate the detection of low levels of Campylobacter in water by dead‐end ultrafiltration to determine the sensitivity and suitability for use under field condition. Methods And Results The dead‐end ultrafiltration technique followed by detection according to ISO 10272 was tested on artificially and naturally contaminated water. Campylobacter were detected...
Wed, 07/10/2019 - 00:00
Toxins, Vol. 11, Pages 399: T cell Receptor Vβ9 in Method for Rapidly Quantifying Active Staphylococcal Enterotoxin Type-A without Live Animals Toxins doi: 10.3390/toxins11070399 Authors: Reuven Rasooly Paula Do Xiaohua He Bradley Hernlem Staphylococcal food poisoning is a result of ingestion of Staphylococcal enterotoxins (SEs) produced by Staphylococcus aureus. Staphylococcal...
Tue, 07/09/2019 - 17:00
Xiaojie Jiang, Riikka Keto-Timonen, Mikael Skurnik, Hannu Korkeala Yersinia pseudotuberculosis is an important foodborne pathogen threatening modern food safety due to its ability to survive and grow at low temperatures. DEAD-box RNA helicase CsdA has been shown to play an important role in the low-temperature growth of psychrotrophic Y. pseudotuberculosis. A total of five DEAD-box RNA helicase...
Tue, 07/09/2019 - 08:58
Abstract Aims To develop a protocol for DNA extraction using whole milk and further, to investigate how the use of whole instead of skimmed milk during DNA extraction affected the resulting microbial composition. Methods and Results In a model study, three selected bacterial species (Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 11775 and Lactobacillus reuteri PTA 4659) were added to...
Tue, 07/09/2019 - 05:40
Abstract Today, antibiotic resistance is one of the most crucial problems so that researchers have begun to search for alternatives to antibiotics. Among these alternatives, phage therapy and phytotherapy became prominent. The present study aims to put forward a different approach by combining these two methods. For this purpose, Staphylococcus aureus phages were isolated from commercial...
Tue, 07/09/2019 - 05:40
Abstract Today, antibiotic resistance is one of the most crucial problems so that researchers have begun to search for alternatives to antibiotics. Among these alternatives, phage therapy and phytotherapy became prominent. The present study aims to put forward a different approach by combining these two methods. For this purpose, Staphylococcus aureus phages were isolated from commercial...
Tue, 07/09/2019 - 01:03
Available online 8 July 2019 Author(s): Mariana Cap, Sergio Vaudagna, Marina Mozgovoj, Trinidad Soteras, Adriana Sucari, Marcelo Signorini, Gerardo LeottaAbstractSeveral studies have been conducted to verify the decontamination potential of electrolytically-generated hypochlorous acid, peroxyacetic acid, lactic acid and caprylic acid against Shiga toxin-producing Escherichia coli (STEC) in beef...
Mon, 07/08/2019 - 20:00
Listeria monocytogenes the causative agent of listeriosis is an important public health concern and food safety challenge. Increased tolerance of this bacterium to benzalkonium chloride (BC), an antibacterial agent widely used in industrial settings, is a growing issue. Plasmid pLMST6 harbouring the gene of the multidrug efflux pump protein EmrC has been recently linked to enhanced BC tolerance...
Mon, 07/08/2019 - 20:00
The intimin protein is the major adhesin involved in the intimate adherence of atypical enteropathogenic Escherichia coli (aEPEC) strains to epithelial cells, but little is known about the structures involved in their early colonization process. A previous study demonstrated that the type III secretion system (T3SS) plays an additional role in the adherence of an Escherichia albertii strain....
Mon, 07/08/2019 - 10:44
Vibrio cholerae mutants lacking lytic transglycosylases MltC and RlpA are defective for daughter cell separation. Our results suggest that lytic transglycosylases at the division septum serve as a back‐up mechanism to cleave peptidoglycan strands that cannot be cleared by highly‐regulated amidase activity and to clear peptidoglycan debris that may block the completion of outer‐membrane...
Mon, 07/08/2019 - 01:04
Available online 6 July 2019 Author(s): Benjamin Duqué, Nabila Haddad, Albert Rossero, Jeanne-Marie Membré, Sandrine GuillouAbstractWorldwide, Campylobacter infections are the main cause of human bacterial enteritis and broiler meat is considered as the most important source of human campylobacteriosis. Some mitigation strategies have been focused on reduction of Campylobacter at the slaughtering...
Mon, 07/08/2019 - 01:04
Available online 6 July 2019 Author(s): Sonia Lamon, Asmine Bastardo, Domenico Meloni, Simonetta Gianna Consolati, Federica Fois, Gabriella Porcheddu, Vanessa Agus, Margherita Pes, Maria Giovanna Cambula, Anna Mureddu, Jesus L. RomaldeAbstractThe aim of the present study was to investigate the genetic variability of Vibrio parahaemolyticus strains isolated from naturally contaminated...
Mon, 07/08/2019 - 01:04
Available online 5 July 2019 Author(s): Ji-Hoon Kang, Kyung Bin SongAbstractThis study was conducted to investigate the antibacterial activity of the noni fruit extract (NFE) against Listeria monocytogenes (ATCC, 19111 and 19115) and assess its applicability for the washing of fresh-cut produce. Based on the results of the disc diffusion test, L. monocytogenes (ATCC, 19111 and 19115) was...
Mon, 07/08/2019 - 00:00
Abstract The aim of the present study is to predict the shelf life and evaluate the risk profile of an innovative whole soybean curd (WSC). Two main spoilage strains were isolated from spoiled WSC and identified as B. subtilis and B. cereus. The origin analysis confirmed that B. subtilis and B. cereus originated from soybean materials and survived in soybean curd. For microbial...
Sun, 07/07/2019 - 09:19
The combined effect of sodium erythorbate, stable chlorine dioxide, and gellan gum glazing on quality of peeled shrimp was investigated during frozen storage, and compared with traditional water‐ice‐glazing treatment. Data revealed that the growth of total aerobes, Escherichia coli, and Staphylococcus aureus was significantly inhibited in the combined treatment, compared to the water‐ice‐glazing...
Sat, 07/06/2019 - 01:07
Available online 3 July 2019 Author(s): Astrid Caroline Muniz da Silva, Pâmela de Oliveira Pena, Sérgio Bertelli Pflanzer, Maristela da Silva do NascimentoAbstractThe objective of this study was to evaluate the effect of different dry aging temperatures on the behavior of Listeria innocua used as a surrogate of L. monocytogenes. The process was performed in boneless loin pieces for up to 42 days...
Fri, 07/05/2019 - 17:00
Alfred Fillol-Salom, Ahlam Alsaadi, Jorge A. Moura de Sousa, Li Zhong, Kevin R. Foster, Eduardo P. C. Rocha, José R. Penadés, Hanne Ingmer, Jakob Haaber Temperate phages are bacterial viruses that as part of their life cycle reside in the bacterial genome as prophages. They are found in many species including most clinical strains of the human pathogens, Staphylococcus aureus and Salmonella...
Fri, 07/05/2019 - 17:00
Stefan Achtsnicht, Christian Neuendorf, Tobias Faßbender, Greta Nölke, Andreas Offenhäusser, Hans-Joachim Krause, Florian Schröper Cholera is a life-threatening disease caused the cholera toxin (CT) as produced some Vibrio cholerae serogroups. In this research we present a method which directly detects the toxin’s B subunit (CTB) in drinking water. For this purpose we performed a magnetic...
Thu, 07/04/2019 - 01:07
Available online 1 July 2019 Author(s): Kristen E. Gibson, Giselle Almeida, Sarah L. Jones, Kacy Wright, Jung Ae LeeAbstractAn estimated 9.4 million illnesses are due to known foodborne pathogens every year. Consumption of fresh produce can be a risk factor for the transmission of foodborne pathogens with the potential for contamination occurring at any node in the farm to fork food pathway....
Thu, 07/04/2019 - 00:00
Toxins, Vol. 11, Pages 392: A Short Peptide Derived from the ZorO Toxin Functions as an Effective Antimicrobial Toxins doi: 10.3390/toxins11070392 Authors: Otsuka Ishikawa Takahashi Masuda Antimicrobial peptides are potential molecules for the development of novel antibiotic agents. The ZorO toxin of a type I toxin–antitoxin system in Escherichia coli O157:H7 is...
Wed, 07/03/2019 - 20:00
Recent research has proven the ability of cold atmospheric plasma (CAP) for assuring food safety. A more flexible and transportable alternative is the use of plasma activated liquids (PAL), which are also known to have antimicrobial properties. However, within the context of food safety, little is known on its potential regarding decontamination. This research therefore focusses on identifying...
Wed, 07/03/2019 - 20:00
With the increase in commercial pig farming, there is a simultaneous increase in the use of antibiotics for prophylaxis as well as therapeutics in China. In this study, we evaluated the prevalence and resistance diversity of Salmonella isolated from faeces of asymptomatic, live and slaughtered pigs. We analyzed 1,732 pig faecal samples collected over eight months, at Henan province of China....
Wed, 07/03/2019 - 17:00
Quail Das, Dion Lepp, Xianhua Yin, Kelly Ross, Jason L. McCallum, Keith Warriner, Massimo F. Marcone, Moussa S. Diarra Non-typhoidal Salmonella enterica serovars continue to be an important food safety issue worldwide. Cranberry (Vaccinium macrocarpon Ait) fruits possess antimicrobial properties due to their various acids and phenolic compounds; however, the underlying mechanism of actions is...
Wed, 07/03/2019 - 15:04
Abstract Efflux mediated multidrug resistance is a well‐known phenomenon facilitated by multidrug resistant (MDR) transporters. One of the approaches to counteract efflux mediated resistance is the use of MDR pump inhibitors, and thus be used in combination with the conventional antibiotics to treat deadly diseases like typhoid fever. We have previously reported that STY4874, an efflux...
Wed, 07/03/2019 - 13:08
Abstract A real‐time loop‐mediated isothermal amplification (Rti‐LAMP) DNA assay was developed for rapid and sensitive detection of viable Escherichia coli O157:H7 in milk by combining with ethidium monoazide bromide (EMA) and bentonite coated activated carbon (BCAC) treatment without enrichment. The assay involved inoculating 25 mL portions of milk with various numbers of E. coli O157:H7. Then...
Wed, 07/03/2019 - 13:08
Abstract A real‐time loop‐mediated isothermal amplification (Rti‐LAMP) DNA assay was developed for rapid and sensitive detection of viable Escherichia coli O157:H7 in milk by combining with ethidium monoazide bromide (EMA) and bentonite coated activated carbon (BCAC) treatment without enrichment. The assay involved inoculating 25 mL portions of milk with various numbers of E. coli O157:H7. Then...
Wed, 07/03/2019 - 13:04
Abstract In this study, we investigated the antibacterial activity of hexahydro‐β‐acids/methyl‐β‐cyclodextrin inclusion complex (HBA/M‐β‐CD) and researched its antibacterial mechanism against Staphylococcus aureus and Enterobacter sakazakii. The result showed that bacteria had different sensitivities to HBA/M‐β‐CD with diameters of inhibition zones ranging from 7.8 ± 0.5 to 14.8 ± 0.7 mm and...
Wed, 07/03/2019 - 13:04
Abstract In this study, we investigated the antibacterial activity of hexahydro‐β‐acids/methyl‐β‐cyclodextrin inclusion complex (HBA/M‐β‐CD) and researched its antibacterial mechanism against Staphylococcus aureus and Enterobacter sakazakii. The result showed that bacteria had different sensitivities to HBA/M‐β‐CD with diameters of inhibition zones ranging from 7.8 ± 0.5 to 14.8 ± 0.7 mm and...

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