Research Publications (Food Safety)

Ultraviolet lightUV) has antimicrobial effects, but the shadowing effect has limited its application. In this study, a novel setup using UV processing in agitated water was developed to inactivate Escherichia coli O157:H7 and Salmonella on blueberries. Blueberries were dip- or spot-inoculated with E. coli or Salmonella. Blueberries inoculated with E. coli were treated for 2 to 10 min with UV directly (dry UV) or immersed in agitated water during UV treatment (wet UV). E.

Publication date: 17 August 2015
, Volume 207
Author(s): Cathy C. Webb , Marilyn C. Erickson , Lindsey E. Davey , Michael P. Doyle

Publication date: 17 August 2015
, Volume 207
Author(s): Anuraj T. Sukumaran , Rama Nannapaneni , Aaron Kiess , Chander Shekhar Sharma

Publication date: October 2015
, Volume 51
Author(s): Kyle S. Landry , Sean Micheli , David Julian McClements , Lynne McLandsborough

Salmonella remains a leading cause of bacterial food-borne disease, sickening millions each year. Although outbreaks of salmonellosis have traditionally been associated with contaminated meat products, recent years have seen numerous disease cases caused by the consumption of produce. Tomatoes have been specifically implicated, due to the ability of Salmonella spp. to enter the tomato fruit and proliferate within, making the decontamination of the raw product impossible.

Publication date: September 2015
, Volume 50
Author(s): Bin Zhou , Yaguang Luo , Xiangwu Nou , Shuxia Lyu , Qin Wang

Publication date: 3 August 2015
, Volume 206
Author(s): Denis O'Leary , Evonne M. McCabe , Matthew P. McCusker , Marta Martins , Séamus Fanning , Geraldine Duffy

Publication date: Available online 21 April 2015

Author(s): James C. Carlson , Doreene R. Hyatt , Jeremy W. Ellis , David R. Pipkin , Anna M. Mangan , Michael Russell , Denise S. Bolte , Richard M. Engeman , Thomas J. DeLiberto , George M. Linz

Publication date: Available online 25 April 2015

Author(s): Charlotta Löfström , Ann-Sofie Hintzmann , Gitte Sørensen , Dorte Lau Baggesen

Cellulose is the most abundant organic polymer on Earth. In bacteria, cellulose confers protection against environmental insults and is a constituent of biofilms typically formed on abiotic surfaces. We report that, surprisingly, Salmonella enterica serovar Typhimurium makes cellulose when inside macrophages. We determine that preventing cellulose synthesis increases virulence, whereas...

Diarrhea due to enteric bacterial pathogens causes significant morbidity and mortality in the United States and worldwide. However, bacterial pathogens may be infrequently identified. Currently, culture and enzyme immunoassays (EIAs) are the primary methods used by clinical laboratories to detect enteric bacterial pathogens.

Serotyping forms the basis of national and international surveillance networks for Salmonella, one of the most prevalent foodborne pathogens worldwide ( 1 – 3 ). Public health microbiology is currently being transformed by whole-genome sequencing (WGS), which opens the door to serotype determination using WGS data.

Response surface methodology was applied to investigate the combined effect of apple skin polyphenolsASP), acetic acid (AA), oregano essential oil (O) and carvacrol (C) on the inactivation of Salmonella on sliced cooked ham. A full factorial experimental design was employed with control variables of ASP (0–10%), AA (0–4%), O (0–0.6%) and C (0–0.8%).

Publication date: October 2015
, Volume 56
Author(s): Sudarsan Mukhopadhyay , Dike O. Ukuku , Vijay K. Juneja

Cary Pirone-Davies, Maria Hoffmann, Richard J. Roberts, Tim Muruvanda, Ruth E. Timme, Errol Strain, Yan Luo, Justin Payne, Khai Luong, Yi Song, Yu-Chih Tsai, Matthew Boitano, Tyson A. Clark, Jonas Korlach, Peter S. Evans, Marc W. Allard

Fifty-nine monophasic Salmonella enterica serovar Typhimurium isolates, collected in Belgium during the period from 2008 to 2011, have been serotyped as 4,[5]:i:– and shown to harbor an fljB coding sequence. The genetic differences between these strains and phenotypically biphasic Salmonella Typhimurium were analyzed through PCR and DNA sequencing. Genetic alterations in the fljB promoter region affecting expression of the phase 2 flagellin were observed in 53 isolates.

Salmonella enterica serovar Enteritidis is a major foodborne pathogen in the United States, causing gastroenteritis in humans, primarily through consumption of contaminated eggs. Chickens are the reservoir host of S. Enteritidis. In layer hens, S. Enteritidis colonizes the intestine and migrates to various organs, including the oviduct, leading to egg contamination.

Publication date: March 2015
, Volume 69
Author(s): Cláudia Vieira Prudêncio , Maria Cristina Dantas Vanetti , Miguel Prieto

Publication date: July 2015
, Volume 53
Author(s): Ulrike Rensch , Matthias Greiner , Günter Klein , Corinna Kehrenberg

In this study, adaptive neuro-fuzzy inference system (ANFIS) and genetic algorithm–artificial neural network (GA-ANN) models were used to predict inactivation of Salmonella enteritidis by ultrasound. The effect of amplitude levels, duty cycles and irradiation time of ultrasound on inactivation of S. enteritidis was investigated.

Publication date: Available online 23 January 2015

Author(s): A. Bousquet , S. Henquet , F. Compain , N. Genel , G. Arlet , D. Decré

Publication date: May 2015
, Volume 103
Author(s): M. Mataragas , A. Bellio , F. Rovetto , S. Astegiano , L. Decastelli , L. Cocolin

One unreported case of extended-spectrum-beta-lactamase (ESBL)-producing Salmonella enterica serovar Typhi was identified, whole-genome sequence typed, among other analyses, and compared to other available genomes of S. Typhi. The reported strain was similar to a previously published strain harboring blaSHV-12 from the Philippines and likely part of an undetected outbreak, the first of ESBL-producing S. Typhi.

Publication date: June 2015
, Volume 48
Author(s): Amin N. Olaimat , Richard A. Holley

Publication date: June 2015
, Volume 52
Author(s): Kojiro Maeda , Yoichi Toyokawa , Naohiro Shimizu , Yuichiro Imanishi , Akikazu Sakudo