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Escherichia coli O157:H7

Thu, 05/16/2019 - 20:00
A total of forty-four lactic acid bacteria (LAB) strains originally isolated from cattle feces and different food sources were screened for their potential probiotic features. The antimicrobial activity of all isolates was tested by well-diffusion assay and competitive exclusion on broth against Salmonella Montevideo, Escherichia coli O157:H7 and Listeria monocytogenes strain N1-002. Thirty-eight...
Wed, 05/08/2019 - 01:15
Publication date: Available online 7 May 2019Source: LWTAuthor(s): Hang Qi, Yen-Con HungAbstractThis study was aimed to elucidate the mechanism of ferrous and alkaline activated persulfate in inactivating Escherichia coli O157:H7 and Listeria monocytogenes. A five-strain cocktail of each pathogen was treated with activated persulfate for 5 min. The treated pathogens were plated on both selective...
Sat, 05/04/2019 - 15:44
Abstract Aims Greenhouse trials were conducted with different cultivars of baby leaf spinach, rocket, and Swiss chard and inoculation of Escherichia coli O157:H7 gfp+, to determine whether plant species and cultivar has an impact on establishment of this strain. Methods and results Three cultivars each of spinach, rocket and Swiss chard were spray inoculated with E. coli O157:H7 gfp+ at doses...
Mon, 04/29/2019 - 01:12
Publication date: Available online 27 April 2019Source: LWTAuthor(s): George Kwabena Afari, Haijie Liu, Yen-Con HungAbstractThe effects of pathogen inoculum concentration, pH and organic load of electrolyzed oxidizing (EO) water treatment on the culturability and viability of Listeria monocytogenes and Escherichia coli O157:H7 was examined. Inoculum concentrations (8, 6, and 4 log CFU/mL), EO...
Fri, 04/26/2019 - 01:13
Publication date: August 2019Source: LWT, Volume 110Author(s): Lele Shao, Xiaojing Tian, Qianqian Yu, Lei Xu, Xingmin Li, Ruitong DaiAbstractIn order to explore the inactivation effect of ohmic heating on bacteria, inactivation and recovery kinetics of Escherichia coli O157:H7 treated with ohmic heating in broth were studied and compared with conventional water bath heating. During the heating...
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 ...
Mon, 04/08/2019 - 20:00
Gamma Irradiation Influences the Survival and Regrowth of Antibiotic-Resistant Bacteria and Antibiotic-Resistance Genes on Romaine Lettuce Vaishali Dharmarha1, Giselle Guron2, Renee R. Boyer1, Brendan A. Niemira3, Amy Pruden2, Laura K. Strawn1 and Monica A. Ponder1* 1Department of Food Science and Technology, Virginia Tech, Blacksburg, VA, United States 2Department of Civil and Environmental...
Fri, 04/05/2019 - 01:14
Available online 2 April 2019 Author(s): S. Ryu, S. Oh, M.R. Park, W.J. Lee, B. Yun, H.J. Choi, M.H. Oh, N.S. Oh, M.H. Song, Y. KimAbstractFoodborne pathogens, including enterohemorrhagic Escherichia coli (EHEC) O157:H7, may enter from the farm environment and foods via several different vectors and influence human health. Here, we employed Caenorhabditis elegans as a host model system and...
Wed, 04/03/2019 - 01:15
Available online 1 April 2019 Author(s): Sang-Soon Kim, Jae-Ik Lee, Dong-Hyun KangAbstractSalsa is a liquid-solid food containing jalapeño and serrano peppers, which result in multistate outbreak in 2008. Storage temperature and sodium chloride (NaCl) concentration of salsa vary depending on the climate, season, and type of product. In this regard, effect of growth conditions, namely, low...
Wed, 03/27/2019 - 01:14
Publication date: Available online 24 March 2019Source: LWTAuthor(s): Daizy Hwang, Elizabeth White, Anuj Purohit, Anand Mohan, Abhinav MishraAbstractSurvival of pathogenic bacteria under acidic conditions may pose a significant food safety challenge and should be assessed when developing new food products. The objective of this study was to determine the antimicrobial effect of two acidulants...
Tue, 03/26/2019 - 14:32
Abstract Aims The purpose of this research was to determine optimum conditions for broth recovery of heat‐injured Salmonella Typhimurium and Escherichia coli O157:H7. Methods and Results Exposure to 55°C for 15 and 25 min, respectively, induced cellular injury to those pathogens. Comparison was made with the commonly used overlay method using selective medium for recovering sub‐lethally...
Thu, 03/21/2019 - 01:18
Available online 19 March 2019 Author(s): Serajus Salaheen, Seon Woo Kim, Jeffrey S. Karns, Ernest Hovingh, Bradd J. Haley, Jo Ann S. Van KesselAbstractEscherichia coli O157:H7 (O157:H7) is a major zoonotic pathogen responsible for severe and sometimes fatal infections in humans. Cattle are the primary reservoir of O157:H7, although other animal species are also known carriers. Fecal shedding of...
Tue, 03/12/2019 - 01:14
Available online 11 March 2019 Author(s): Sun-Ah Kwon, Won-Jae Song, Dong-Hyun KangAbstractThe purpose of this study was to evaluate the effectiveness of the combination treatment of lactic acid immersion and saturated or superheated steam (SHS) on inactivation of foodborne pathogens on cantaloupes. Saturated steam (SS) treatments were performed at 100°C, while SHS treatments were delivered at...
Tue, 03/12/2019 - 01:14
Available online 11 March 2019 Author(s): Sang-Soon Kim, Sang-Hyun Park, Soo-Hwan Kim, Dong-Hyun KangAbstractHurdle technology, in which preservation techniques are combined, has been of interest to scientists aiming to ensure microbiological food safety. We investigated the synergistic effect of UV-C irradiation and ohmic heating on the inactivation of foodborne pathogens. UV-C irradiation and...
Wed, 03/06/2019 - 11:00
In this study, we examined the change in resistance of Salmonella enterica serovar Typhimurium and Escherichia coli O157:H7 to 222-nm krypton-chlorine (KrCl) excilamp treatment as influenced by acid adaptation and identified a mechanism of resistance change. In addition, we measured changes in apple juice quality indicators, such as color, total phenols, and 2,2-diphenyl-1-picrylhydrazyl (DPPH)...
Tue, 02/26/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 3, Page 479-485, March 2019.
Tue, 02/26/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 3, Page 479-485, March 2019.
Thu, 02/21/2019 - 00:00
Escherichia coli O157:H7, Cronobacter spp., and Salmonella spp. are common food-borne pathogens in milk that may cause serious diseases. In the present study, we established a simple, rapid, and specific method to simultaneously detect viable E. coli O157:H7, Cronobacter spp., and Salmonella spp. in milk. Three specific genes, fliC from E. coli O157:H7, cgcA from Cronobacter spp., and invA from...
Mon, 02/11/2019 - 01:14
Publication date: Available online 8 February 2019Source: LWTAuthor(s): Helena Taina Diniz-Silva, Janaína Batista de Sousa, Jessica da Silva Guedes, Rita de Cássia Ramos do Egypto Queiroga, Marta Suely Madruga, Josean Fechine Tavares, Evandro Leite de Souza, Marciane MagnaniAbstractThe effects of Origanum vulgare L. (OVEO) and Rosmarinus officinalis L. (ROEO) essential oils in combination on the...
Sat, 02/02/2019 - 01:06
Available online 1 February 2019 Author(s): Jun-Won Kang, Jae-Ik Lee, Soo-Yeon Jeong, Yu-Min Kim, Dong-Hyun KangAbstractWe examined the control effect of a 222-nm KrCl excilamp on foodborne pathogens on alfalfa seeds and compared it with a conventional 254-nm low-pressure (LP) Hg lamp. When the 222-nm KrCl excilamp treated seeds at 87, 174 and 261 mJ/cm2, the log reductions of Escherichia coli...
Sat, 02/02/2019 - 01:06
Available online 31 January 2019 Author(s): Sudarsan Mukhopadhyay, Kimberly Sokorai, Dike O. Ukuku, Xuetong Fan, Modesto Olanya, Vijay JunejaAbstractThe purpose of this study was to investigate the efficacy of pulsed light (PL), a new formula of sanitizer (HEN) consisting of hydrogen peroxide, EDTA and Nisin, as well as synergy of PL and HEN sanitizer (PL-HEN) wash in inactivating E. coli O157:H7...
Fri, 02/01/2019 - 01:14
Publication date: Available online 30 January 2019Source: LWTAuthor(s): Juhyun Kim, Taehoon Lee, Pradeep Puligundla, Chulkyoon MokAbstractAfterglow stream of an atmospheric pressure plasma can conveniently be used for large scale decontamination operations. In the present study, an afterglow dielectric-barrier discharge air plasma (ADDAP) was used to inactivate Escherichia coli O157:H7, which was...
Fri, 02/01/2019 - 00:00
In this study, a rapid and sensitive method that combines ethidium bromide monoazide (EMA) staining with real-time loop-mediated isothermal amplification (Rti-LAMP) assay was tested in detecting and evaluating viable but non-culturable state (VBNC) Escherichia coli (E. coli) O157:H7 induced by low temperature. When 1.7 × 104 CFU/ml of E. coli O157:H7 was 3 cycles of freeze-...
Thu, 01/24/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 2, Page 226-232, February 2019.
Thu, 01/24/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 2, Page 226-232, February 2019.
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
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
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...

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