Escherichia coli O157:H7

Thu, 01/24/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 2, Page 226-232, February 2019.
Sat, 12/29/2018 - 01:11
Publication date: Available online 28 December 2018 Innovative Food Science & Emerging TechnologiesAuthor(s): Urvi Shah, Pietro Ranieri, Yuyuan Zhou, Caroline L. Schauer, Vandana Miller, Gregory Fridman, Jasreen K. SekhonAbstractThe efficacy of non-equilibrium atmospheric pressure-pulsed dielectric barrier discharge (cold plasma)-treated mist in disinfecting baby kale leaves, and its effect...
Tue, 12/25/2018 - 01:10
Available online 23 December 2018 Author(s): Chun Wang, Keyu Xing, Ganggang Zhang, Meifang Yuan, Shaolan Xu, Daofeng Liu, Wenyao Chen, Juan Peng, Song Hu, Wei-Hua LaiAbstractEscherichia coli O157:H7 (E. coli O157:H7) is a potential threat to human health; thus, a rapid and sensitive method for detecting it is necessary. We designed a single-stranded DNA that contained an appended block and...
Mon, 12/24/2018 - 01:08
Available online 21 December 2018 Author(s): Mahmoudreza Ovissipour, Rewa Rai, Nitin NitinAbstractWashing and sanitation of fresh produce and food contact surfaces are vital steps in reducing the risk of foodborne illness. However, there is a lack of process control and verification tools to directly assess reduction of bacteria during a sanitation process. The overall goal of this study was to...
Sun, 12/23/2018 - 01:10
LWT
Publication date: March 2019Source: LWT, Volume 102Author(s): Ji-Hoon Kang, Jun-Beom Park, Kyung Bin SongAbstractAntimicrobial activities of quaternary ammonium surfactants (QAS) have been reported, but the effects of various QAS on the disinfection of foodborne pathogens on fresh produce have not been compared. Thus, the objective of this study was to determine the most effective QAS to be used...
Wed, 12/19/2018 - 01:10
Available online 18 December 2018 Author(s): Qisen Xiang, Chaodi Kang, Dianbo Zhao, Liyuan Niu, Xiao Liu, Yanhong BaiAbstractIn recent years, the potential application of plasma-activated water (PAW) in the food industry has received increasing attention as a promising alternative to traditional sanitizers. The objective of this work was to evaluate the effect of organic matters in the form of...
Sun, 12/16/2018 - 01:03
Available online 14 December 2018 Author(s): Masome Valiolahi, Mohamad Ali Najafi, Majid Alipour Eskandani, Mohamad RahnamaAbstractIn this study, the efficacy of household sanitizers application on reduction of Escherichia coli O157:H7, ascorbic acid, total phenolics, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging and overall acceptability of inoculated fresh basil leaves (Ocimum...
Thu, 12/13/2018 - 01:11
Available online 12 December 2018 Author(s): Elizabeth A. Kearns, Ryann E. Gustafson, Sonia M. Castillo, Hamoud Alnughaymishi, Daniel V. Lim, Elliot T. RyserAbstractIn pilot-scale testing, dead-end ultrafiltration concentration (DEUF-C) sampling increased detection of pathogens in lettuce wash water. This study investigated DEUF-C performance when scaled up to commercial processing levels. Two...
Sun, 12/09/2018 - 01:11
LWT
Publication date: March 2019Source: LWT, Volume 101Author(s): Emina Mulaosmanovic, Sebastian Farkas, Ivar Vågsholm, Julia Darlison, Maria Sousa, Lars Mogren, Samareh Gharaie, Beatrix W. AlsaniusAbstractDespite numerous outbreaks of foodborne illnesses associated with sprouts, consumption of raw sprouted seeds is still linked with a healthy lifestyle in Scandinavia. Different types of sprouting...
Thu, 12/06/2018 - 01:11
Available online 4 December 2018 Author(s): Marilyn C. Erickson, Jye-Yin Liao, Alison S. Payton, Peter W. Cook, Henk C. Den Bakker, Jesus Bautista, Juan Carlos Díaz PérezAbstractPlant genotype has been advocated to have an important role in the fate of enteric pathogens residing in lettuce foliage. This study was therefore undertaken under the premise that different pathogen responses could occur...
Thu, 12/06/2018 - 01:10
Publication date: December 2018 , Volume 308, Issue 8Author(s): Gillian A.M. Tarr, Hanna N. Oltean, Amanda I. Phipps, Peter Rabinowitz, Phillip I. TarrAbstractBackgroundMultiple case definitions for post-diarrheal hemolytic uremic syndrome (D+ HUS) associated with Shiga toxin-producing Escherichia coli (STEC) are used across public health, research, and clinical practice.MethodsTo identify a...
Thu, 12/06/2018 - 01:10
Publication date: December 2018 , Volume 308, Issue 8Author(s): S. Feuerbaum, N. Saile, G. Pohlentz, J. Müthing, H. SchmidtAbstractEnterohemorrhagic Escherichia coli (EHEC) O157:H7 strain EDL933 encodes the single chromosomal 9-O-acetylesterase NanS, and several copies of prophage-encoded 9-O-acetylesterases (NanS-p). These enzymes have recently been shown to cleave 5-N-acetyl-9-O-acetyl...
Thu, 12/06/2018 - 01:10
Xiaojing Tian, Qianqian Yu, Donghao Yao, Lele Shao, Zhihong Liang, Fei Jia, Xingmin Li, Teng Hui, Ruitong Dai
Wed, 12/05/2018 - 01:08
Publication date: June 2019 , Volume 79Author(s): Anna M. Laidlaw, Michael G. Gänzle, Xianqin YangAbstractQuantitative Polymerase Chain Reaction (qPCR) is a molecular method commonly used to detect and quantify bacterial DNA on food but is limited by its inability to distinguish between live and dead cell DNA. To overcome this obstacle, propidium monoazide (PMA) alone or with deoxycholate (DC)...
Wed, 12/05/2018 - 01:08
Publication date: April 2019 , Volume 78Author(s): Holly M. Mayton, Ian M. Marcus, Sharon L. WalkerAbstractThis study investigated the effects of solution chemistry and growth conditions on bacterial deposition on spinach leaf surfaces using a parallel plate flow cell. Two food safety pathogens of concern and two non-pathogen bacterial surrogates (environmental E. coli isolates) were grown in...
Sat, 12/01/2018 - 00:00
Abstract Shiga toxin-producing Escherichia coli (STEC) O157:H7 and extended-spectrum beta-lactamase (ESBL) producing E. coli (ESBLEC) are important bacteria of public health concern and frequently isolated from raw beef products. Bacteriophage-based methods have been increasingly exploited to control bacterial contamination in meats. Here, we describe the isolation,...
Tue, 11/27/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 12, Page 2028-2033, December 2018.
Tue, 10/30/2018 - 11:00
Thymol, carvacrol, and trans-cinnamaldehyde are essential oil (EO) compounds with broad-spectrum antimicrobial activities against foodborne pathogens, including Escherichia coli O157:H7. However, little is known regarding direct resistance and cross-resistance development in E. coli O157:H7 after adaptation to sublethal levels of these compounds, and information is scarce on microbial adaptive...
Wed, 10/24/2018 - 01:11
LWT
Publication date: Available online 22 October 2018Source: LWTAuthor(s): Matthew J. Moriarty, Kenneth Semmens, Gary K. Bissonnette, Jacek JaczynskiAbstractHydroponics and aquaponics have been gaining popularity to grow produce. Escherichia coli O157:H7 may internalize within edible produce. This study was to investigate E. coli O157:H7 internalization in red sails lettuce in a custom designed/...
Mon, 10/22/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 11, Page 1906-1912, November 2018.
Tue, 10/16/2018 - 01:12
Jiao Li, Luyao Ma, Xinyu Liao, Donghong Liu, Xiaonan Lu, Shiguo Chen, Xingqian Ye, Tian Ding
Sun, 09/23/2018 - 01:12
LWT
Publication date: December 2018Source: LWT, Volume 98Author(s): Serap CoşansuAbstractThe survival kinetics of heat-adapted (43 °C 18 h, 45 °C 18 h) and heat-shocked (45 °C 2 h) Escherichia coli O157:H7 and Listeria monocytogenes cells inoculated into kefir was investigated during refrigerated storage. Inactivation data was analyzed using log-linear, log linear-shoulder, and Weibull models. The...
Wed, 09/19/2018 - 01:11
LWT
Publication date: December 2018Source: LWT, Volume 98Author(s): Tareq M. Osaili, Anas A. Al-Nabulsi, Taqwa F. Aljaafreh, Amin N. OlaimatAbstractTahini halva or its major ingredient, tahini, have been implicated in several foodborne outbreaks in Europe and USA. The aim of the study was to i) assess the effect of desiccation and heat stresses on the sensitivity of Salmonella spp., Listeria...
Thu, 09/13/2018 - 01:08
Available online 11 September 2018 Author(s): Wenqian Yuan, Constance Hui Min Teo, Hyun-Gyun YukAbstractThis study evaluated the antimicrobial activities of combined use of essential oil (EO) compounds against E. coli O157:H7, using the Fractional Inhibitory Concentration (FIC) index and time-kill assay. The mechanisms of enhanced antimicrobial efficacies in EO combinations were evaluated using...
Tue, 08/28/2018 - 17:00
Xin Gao, Xun Yang, Lance Noll, Xiaorong Shi, Jay Worley, Marc Allard, Eric Brown, T. G. Nagaraja, Jianghong Meng Escherichia coli serotype O157:H7 continues to pose a serious health threat to human beings. Cattle, a major reservoir of the pathogen, harbor E. coli O157:H7 in their gastrointestinal tract and shed variable concentrations of E. coli O157:H7 into the environment. Genetic...
Fri, 08/24/2018 - 01:09
Available online 23 August 2018 Author(s): Lihan Huang, Chang-An Hwang, Ting FangAbstractEscherichia coli O157: H7, Salmonella spp., and Listeria monocytogenes are three major foodborne pathogens in meats that frequently cause serious human infections and are significant public health hazards. Many studies have reported the thermal resistance of these pathogens in various meats. Although showing...
Fri, 08/17/2018 - 11:00
The impact of neutral electrolyzed oxidizing (NEO) water treatments on the formation of sublethally injured Yersinia enterocolitica, Escherichia coli O157:H7, and Salmonella enterica serovar Enteritidis cells was evaluated. When pathogens were treated with 6% NEO water, approximately 38% of the treated Yersinia population and 25% of the treated Salmonella population became sublethally injured....
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...
Fri, 08/03/2018 - 01:12
LWT
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, 07/19/2018 - 01:16
Bicheng Zhang, Xiaohan Sun, Hongjie Fan, Kongwang He, Xuehan Zhang
Fri, 07/06/2018 - 01:14
Publication date: June 2018 Innovative Food Science & Emerging Technologies, Volume 47Author(s): Siméon Bourdoux, Andreja Rajkovic, Stijn De Sutter, An Vermeulen, Sara Spilimbergo, Alessandro Zambon, Gerard Hofland, Mieke Uyttendaele, Frank DevlieghereAbstractCoriander, either fresh or inoculated with three strains of Escherichia coli O157:H7, Salmonella or Listeria monocytogenes, was treated...
Fri, 07/06/2018 - 01:14
LWT
Publication date: October 2018Source: LWT, Volume 96Author(s): Yukie Hosotani, Fia Noviyanti, Shigenobu Koseki, Yasuhiro Inatsu, Susumu KawasakiAbstractThe aim of this study was to develop an estimation method for bacterial injury levels of Escherichia coli O157:H7 in food products. Bacterial growth was monitored in recovery medium and quantified by real-time PCR to quantify the growth delay...
Fri, 07/06/2018 - 01:13
Available online 30 June 2018 Author(s): Tong-Jen Fu, Yichen Li, Deena Awad, Ting-Yang Zhou, Lyurui LiuAbstractThis study examined factors that may affect the performance of a produce wash in preventing E. coli O157:H7 cross-contamination. Fresh-cut romaine lettuce (8 or 20 g) inoculated with ca. 7 log CFU/g of E. coli O157:H7 expressing green fluorescence protein was washed with uninoculated cut...
Thu, 07/05/2018 - 00:35
Publication date: December 2018 , Volume 94 Author(s): Xiaojing Tian, Qianqian Yu, Lele Shao, Xingmin Li, Ruitong Dai This study investigated the inactivation, sublethal injury, and recovery of Escherichia coli O157:H7 cells induced by ohmic heating (OH) in phosphate buffer saline (PBS) using thin agar layer (TAL) method. The voltage gradients of OH were 10 V/cm and 5 V/cm, which...
Mon, 07/02/2018 - 11:27
To adapt to ever-changing environments, pathogens quickly alter gene expression. This can occur through transcriptional, post-transcriptional, or post-translational regulation. Historically, transcriptional regulation has been thoroughly studied to understand pathogen niche adaptation, whereas post-transcriptional and post-translational gene regulation have only been relatively recently...

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