Escherichia coli O157:H7

Fri, 03/10/2017 - 04:16
Publication date: Available online 10 March 2017 Author(s): Yunbin Jiang, Kimberly Sokorai, Georgios Pyrgiotakis, Philip Demokritou, Xihong Li, Sudarsan Mukhopadhyay, Tony Jin, Xuetong Fan The purpose of this study was to investigate the efficacy of aerosolized hydrogen peroxide in inactivating bacteria and maintaining quality of grape tomatoes, baby spinach leaves and...
Thu, 03/09/2017 - 13:57
Publication date: July 2017 , Volume 129 Author(s): Hyeree Moon, Nam Hee Kim, Soon Han Kim, Younghoon Kim, Jee Hoon Ryu, Min Suk Rhee An effective bactericidal cold-marinating method for beef products is described, exploiting the synergism between soy sauce and natural compounds (carvacrol, CV or thymol, TM) to reduce microbiological risks. Beef slices inoculated with Escherichia...
Tue, 03/07/2017 - 19:00
Escherichia coli O157:H7 (O157) strain 86–24, linked to a 1986 disease outbreak, displays curli- and biofilm-negative phenotypes that are correlated with the lack of Congo red (CR) bin...
Fri, 03/03/2017 - 06:30
Abstract This study was conducted to investigate the effects of aerosolized malic acid and ultraviolet light (UV-C) for inhibiting the growth of foodborne pathogens, Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes, on fresh-cut lettuce. The antimicrobial effects of aerosolized 2% malic acid and UV-C, alone or in combination, were tested. Ten grams of lettuce were...
Mon, 02/27/2017 - 17:55
Publication date: 15 August 2017 , Volume 229 Author(s): Ahmet Güner, Emre Çevik, Mehmet Şenel, Lokman Alpsoy An electrochemical immunosensor for the common food pathogen Escherichia coli O157:H7 was developed. This novel immunosensor based on the PPy/AuNP/MWCNT/Chi hybrid bionanocomposite modified pencil graphite electrode (PGE). This hybrid bionanocomposite platform was modified...
Fri, 02/24/2017 - 03:45
Publication date: 2 May 2017 , Volume 248 Author(s): Gordon R. Davidson, Chelsea N. Kaminski-Davidson, Elliot T. Ryser In order to minimize cross-contamination during leafy green processing, chemical sanitizers are routinely added to the wash water. This study assessed the efficacy of peroxyacetic acid and mixed peracid against E. coli O157:H7 on iceberg lettuce, in wash water, and on...
Mon, 02/20/2017 - 13:01
Publication date: March 2017 , Volume 100, Issue 3 Author(s): I.M. Ogunade, Y. Jiang, D.H. Kim, A.A. Pech Cervantes, K.G. Arriola, D. Vyas, Z.G. Weinberg, K.C. Jeong, A.T. Adesogan Inhibiting the growth of Escherichia coli O157:H7 (EC) in feeds may prevent the transmission or cycling of the pathogen on farms. The first objective of this study was to examine if addition of...
Thu, 02/16/2017 - 03:00
Journal of Food Protection, Volume 80, Issue 3, Page 497-501, March 2017.
Tue, 02/14/2017 - 00:00
The objective of this study was to ensure and evaluate the safety of imported frozen beef liver traded in supermarkets of Kafr El-Sheikh Governorate, Egypt, through detection of Salmonella typhymurium, Salmonella enteritidies, Escherichia coli O157:H7, antibiotic residues, and aflatoxin B1 residue. Fifty samples of imported frozen liver were randomly collected from different shops at Kafr El-...
Mon, 01/30/2017 - 19:03
Publication date: Available online 30 January 2017 Author(s): Nancy A. Cornick, Josh Pitzer, Amy F. Helgerson, Melissa L. Madsen, Kathy T. Kurth, Qianjun Xiao, F. Chris Minion Outbreaks of Escherichia coli O157:H7 in the United States due to contaminated foods are a public health issue and a continuing problem. The major reservoir for these organisms is the gastrointestinal...
Fri, 01/27/2017 - 15:24
Publication date: 15 July 2017 , Volume 227 Author(s): Rong Di, Malathi S. Vakkalanka, Chatchaya Onumpai, Hoa K. Chau, Andre White, Robert A. Rastall, Kit Yam, Arland T. Hotchkiss Shiga toxin (Stx)-producing, food-contaminating Escherichia coli (STEC) is a major health concern. Plant-derived pectin and pectic-oligosaccharides (POS) have been considered as prebiotics and for...
Thu, 01/26/2017 - 05:05
Abstract The UV-C sensitivity of six pathogenic Escherichia coli O157:H7 strains associated with recent outbreaks of foodborne illnesses and five attenuated/nonpathogenic E. coli O157:H7 strains was investigated using conventional plating method, and real time PCR with and without ethidium monoazide (EMA) pretreatment. Results showed that the nonpathogenic/attenuated E. coli ATCC 25922, 6980-2,...
Thu, 01/26/2017 - 00:00
Enterohemorrhagic Escherichia coli (EHEC) is the most common cause of hemorrhagic colitis and hemolytic uremic syndrome in human patients, with brain damage and dysfunction the main cause of acute death. We evaluated the efficacy of urtoxazumab (TMA-15, Teijin Pharma Limited), a humanized monoclonal antibody against Shiga toxin (Stx) 2 for the prevention of brain damage, dysfunction, and death in...
Tue, 01/24/2017 - 19:00
Despite of the sanitation measures in municipal abattoirs to reduce contamination, Escherichia coli continues to be a health hazard. The present study was conducted on 150 apparently healthy slaughtered cattle at...
Tue, 01/24/2017 - 03:00
Journal of Food Protection, Volume 80, Issue 2, Page 302-311, February 2017.
Wed, 01/18/2017 - 08:49
Publication date: June 2017 , Volume 64 Author(s): Seul-Gi Jeong, Dong-Hyun Kang This study was conducted to investigate the efficacy of gamma and electron beam irradiation to inactivate foodborne pathogens in ready-to-bake cookie dough and to determine the effect on quality by measuring color and texture changes. Cookie dough inoculated with Escherichia coli O157:H7, Salmonella...
Sun, 01/15/2017 - 01:11
Publication date: 6 March 2017 , Volume 244 Author(s): Manoj K. Shah, Gladys Asa, Julie Sherwood, Kari Graber, Teresa M. Bergholz Low moisture foods such as nuts, spices, and seeds have been implicated in several outbreaks due to Salmonella or E. coli O157:H7 contamination. Such foods may be consumed raw, and can be used as ingredients in other food products. While numerous thermal...
Sat, 01/14/2017 - 22:06
Publication date: May 2017 , Volume 75 Author(s): Mehdi Harich, Behnoush Maherani, Stephane Salmieri, Monique Lacroix Ready-to-eat (RTE) foods are not further treated before consumption in such a way that may significantly reduce the microbial load, therefore the risk of foodborne disease must be considered. In this regard, the use of natural antimicrobial compounds is an interesting...
Sun, 01/08/2017 - 00:57
Publication date: 6 March 2017 , Volume 244 Author(s): Min-Jeong Kim, Chee Hwa Tang, Woo Suk Bang, Hyun-Gyun Yuk To investigate a potential of 405±5nm light emitting diode (LED) as a novel technology for food preservation, the antibacterial effect of 405±5nm LED on Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella spp. on the surface of fresh-cut mango and its influence...
Thu, 12/29/2016 - 04:15
Summary As a natural antibacterial agent, Artemisia annua oil (AAO) exhibited significant antibacterial effect on Escherichia coli O157:H7. However, AAO was volatile and not suitable for surface coatings of fresh produce. Therefore, the edible agar films containing chitosan and AAO liposomes were engineered to overcome the defect. Chitosan was added in the film to enhance the antibacterial...
Tue, 12/27/2016 - 23:27
Abstract The growth kinetics and volatile compounds of Escherichia coli O157:H7 on irradiated, cubed raw pork were investigated in this study. The results showed that the Gompertz model fitted the growth data of E. coli O157:H7 on pork with high R2 value, and the growth kinetic parameters exhibited respective features at different temperature and inoculum levels. For the volatile metabolites...
Fri, 12/16/2016 - 15:12
Publication date: March 2017 , Volume 73, Part B Author(s): Seung Min Kim, Hyun Jung Kim Adhesion to intestinal epithelium is critical for virulence and infection of Escherichia coli O157:H7, which is a major cause of foodborne illnesses. Targeting adhesion but not growth of the pathogen is an effective approach to control bacterial infections. In this study, a high-throughput screening...
Thu, 12/15/2016 - 11:00
Our recent studies have shown that intimin and the locus of enterocyte effacement-encoded proteins do not play a role in Escherichia coli O157:H7 (O157) adherence to the bovine recto-anal junction squamous epithelial (RSE) cells. To define factors that play a contributory role, we investigated the role of curli, fimbrial adhesins commonly implicated in adherence to various fomites and plant and...
Mon, 12/12/2016 - 23:45
Publication date: 21 February 2017 , Volume 243 Author(s): Salehe Sabouri, Zargham Sepehrizadeh, Sahar Amirpour-Rostami, Mikael Skurnik Phage therapy is an old method of combating bacterial pathogens that has recently been taken into consideration due to the alarming spread of antibiotic resistance. Escherichia coli O157:H7 is a foodborne pathogen that causes hemorrhagic colitis and...
Wed, 11/30/2016 - 01:03
Alejandro Huerta-Uribe, Zoe R. Marjenberg, Nao Yamaguchi, Stephen Fitzgerald, James P. R. Connolly, Nuria Carpena, Hanna Uvell, Gillian Douce, Michael Elofsson, Olwyn Byron, Rudi Marquez, David L. Gally, Andrew J. Roe
Wed, 11/16/2016 - 23:27
Guided by the principle of hurdle technology, a high-efficiency antibacterial agent (AA) had been formulated, which contained six kinds of essential oils, three pieces of food additives and ethyl alcohol. The antibacterial effects of AA against E. coli O157:H7 biofilm on simulated and real cucumbers were testified by MTT staining method, colony-forming unit (CFU) counting method, scanning...
Sat, 11/12/2016 - 10:07
Publication date: December 2016 , Volume 99, Issue 12 Author(s): Zhen Huang, Xi Cui, Quan-Yuan Xie, Dao-Feng Liu, Wei-Hua Lai Escherichia coli O157:H7 is an important serotype of enterohemorrhagic E. coli that was first identified as a human pathogen in 1982. This pathogen causes several serious diseases. In this study, immunomagnetic separation was coupled with a fluorescent...
Tue, 11/01/2016 - 15:46
Publication date: March 2017 , Volume 73, Part A Author(s): Paola Maresca, Giovanna Ferrari This work aimed at investigating the effect of HPF processes on the inactivation kinetics of selected microbial strains, Escherichia coli O157:H7 ATCC 26 and Lactococcus lactis ssp. Cremoris suspended in McIlvine buffer. The effects of different processing conditions, namely pressure level (200–400...
Thu, 10/27/2016 - 11:01
This study evaluated the inhibitory effect of cinnamon oil against Escherichia coli O157:H7 Shiga toxin (Stx) production and further explored the underlying mechanisms. The MIC and minimum bactericidal concentration (MBC) of cinnamon oil against E. coli O157:H7 were 0.025% and 0.05% (vol/vol), respectively. Cinnamon oil significantly reduced Stx2 production and the stx2 mRNA expression that is...
Thu, 10/27/2016 - 11:01
The development of resistance in foodborne pathogens to food preservation techniques is an issue of increasing concern, especially in minimally processed foods where safety relies on hurdle technology. In this context, mild heat can be used in combination with so-called nonthermal processes, such as high hydrostatic pressure (HHP), at lower individual intensities to better retain the quality of...
Tue, 10/25/2016 - 13:24
All of the heme-degrading enzymes that have been characterized to date require molecular oxygen as a cosubstrate. Escherichia coli O157:H7 has been shown to express heme uptake and transport proteins, as well as use heme as an iron source. This enteric pathogen colonizes the anaerobic space of the lower intestine...
Sat, 10/15/2016 - 07:31
Publication date: February 2017 , Volume 61 Author(s): Yaoxin Huang, Mu Ye, Xinang Cao, Haiqiang Chen Pulsed light (PL) inactivation of two human norovirus (HuNoV) surrogates, murine norovirus (MNV-1) and Tulane virus (TV), and two bacterial pathogens, Escherichia coli O157:H7 and Salmonella, were evaluated. The viruses and bacteria were suspended in phosphate buffered saline (PBS) to...
Thu, 10/13/2016 - 00:00
Abstract The objective of the present study was to determine the antimicrobial activity of lauroyl arginate ethyl (LAE) against enterohemorrhagic Escherichia coli (EHEC) O157:H7 and Listeria monocytogenes on oak leaf lettuce. Thus, bacterial suspensions of both pathogens containing 9.0 log10 CFU/mL were spot inoculated on the upper surfaces of lettuce leaves and the leaves were...
Fri, 09/23/2016 - 01:22
Pauline Bondue, Sébastien Crèvecoeur, François Brose, Georges Daube, Marie-Christine Seghaye, Mansel W. Griffiths, Gisèle LaPointe, Véronique Delcenserie
Wed, 09/21/2016 - 01:00
Zhongjing Lu, Christopher R. Dockery, Michael Crosby, Katherine Chavarria, Brett Patterson, Matthew Giedd
Wed, 09/21/2016 - 01:00
Louise Crozier, Pete E. Hedley, Jenny Morris, Carol Wagstaff, Simon C. Andrews, Ian Toth, Robert W. Jackson, Nicola J. Holden
Fri, 09/16/2016 - 11:01
Enterohemorrhagic Escherichia coli (EHEC) O157:H7 strain EDL933 harbors multiple prophage-associated open reading frames (ORFs) in its genome which are highly homologous to the chromosomal nanS gene. The latter is part of the nanCMS operon, which is present in most E. coli strains and encodes an esterase which is responsible for the monodeacetylation of 5-N-acetyl-9-O-acetyl neuraminic acid (Neu5...

Pages