Research Publications (Food Safety)

Publication date: 2 February 2017
, Volume 242

Author(s): M. Pesciaroli, L. Cucco, S. De Luca, F.R. Massacci, C. Maresca, L. Medici, M. Paniccià, E. Scoccia, M. Staffolani, G. Pezzotti, C.F. Magistrali

Amber Hsiao, Trevor Toy, Hye Jin Seo, Florian Marks

Publication date: April 2017
Source:LWT - Food Science and Technology, Volume 77

Author(s): Carmelita Z. Scolforo, Jacqueline V. Bairros, Ana Carolina B. Rezende, Beatriz S. Silva, Roberta B.T. Alves, Daiene S. Costa, Nélio J. Andrade, Anderson S. Sant'Ana, Wilmer E.L. Pena

et al.

et al.

et al.

Vibrio spp. have emerged as a serious threat to human health worldwide. V. parahaemolyticus, V. cholerae, and V. vulnificus pose a considerable public health risk in Tunisia because they cause sporadic and epidemic foodborne infections associated with the consumption of raw or undercooked contaminated seafood. More recently, toxR-positive V. alginolyticus was also reported to be a potential source of contaminated seafood.

The determination of Shiga toxin (ST) subtypes can be an important element in the risk characterization of foodborne ST-producing Escherichia coli (STEC) isolates for making risk management decisions.

Genomic antimicrobial resistance (AMR) prediction tools have the potential to support foodborne illness outbreak investigations through their application in the analysis of bacterial genomes from causative strains. The AMR marker profile of a strain of interest, initially identified in outbreak-associated clinical samples, may serve as the basis for customization of selective enrichment media, facilitating its recovery from samples in a food safety investigation.

Salmonella continues to be a problem associated with low-moisture foods, particularly given enhanced thermal resistance at lower water activity (aw). However, there is a scarcity of thermal inactivation models accounting for the effect of aw. The objective of this study was to test multiple secondary models for the effect of product (wheat flour) aw on Salmonella enterica Enteritidis phage type 30 thermal resistance.

A six sigma fishbone analysis approach was used to develop a machine learning model in SAS, Version 9.4, by using stepwise linear regression. The model evaluated the effect of a wide variety of variables, including slaughter establishment operational measures, normal (30-year average) weather, and extreme weather events on the rate of Salmonella-positive carcasses in young chicken slaughter establishments.

This study aimed at identifying explanatory variables that were associated with Campylobacter and Escherichia coli concentrations throughout processing in two commercial broiler slaughterhouses. Quantative data on Campylobacter and E. coli along the processing line were collected.

Public health concerns over the emergence of antimicrobial resistant bacteria have increased recently. The purpose of this study was to investigate the prevalence of antimicrobial resistant Enterobacteriaceae in shell eggs purchased from small poultry farms and farmers' markets. A total of 504 eggs were pooled to make 252 composite samples, consisting of 2 eggs per composite. The microbial quality of shell eggs was determined by standard quantitative, biochemical, and PCR techniques.

During September to October, 2006, state and local health departments and the Centers for Disease Control and Prevention investigated a large, multistate outbreak of Escherichia coli O157:H7 infections. Case patients were interviewed regarding specific foods consumed and other possible exposures. E. coli O157:H7 strains isolated from human and food specimens were subtyped using pulsed-field gel electrophoresis and multiple-locus variable-number tandem repeat analyses (MLVA).

Muireann K. Smith, Lorraine A. Draper, Pieter-Jan Hazelhoff, Paul D. Cotter, R. P. Ross, Colin Hill

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

Shiga toxin (Stx) 2e of Stx-producing Escherichia coli (STEC) is the primary virulence factor in the development of pig edema disease shortly after weaning. Stx2e binds to the globo-series glycosphingolipids (GSLs) globotriaosylceramide (Gb3Cer, Galα1-4Galβ1-4Glcβ1-1Cer) and globotetraosylceramide (Gb4Cer, GalNAcβ1-3Galα1-4Galβ1-4Glcβ1-1Cer), the latter acting as the preferential Stx2e receptor.

Vibrio cholerae has caused seven cholera pandemics since 1817, imposing terror on much of the world, but bacterial strains are currently only available for the sixth and seventh pandemics. The El Tor biotype seventh pandemic began in 1961 in Indonesia, but did not originate directly from the classical biotype sixth-pandemic...

Lukas Lis, Ian F. Connerton

Abstract

Publication date: Available online 27 November 2016


Author(s): Zhong Peng, Wan Liang, Yuanguo Wang, Wenjing Liu, Hongfeng Zhang, Teng Yu, Anding Zhang, Huanchun Chen, Bin Wu

Publication date: May 2017
, Volume 63

Author(s): Rafael H. Mateus-Vargas, Viktoria Atanassova, Felix Reich, Günter Klein

Publication date: Available online 25 November 2016


Author(s): Surojit Das, Sriparna Samajpati, Ujjwayini Ray, Indranil Roy, Shanta Dutta

Publication date: April 2017
Source:LWT - Food Science and Technology, Volume 77

Author(s): Marília Moraes-Lovison, Luís F.P. Marostegan, Marina S. Peres, Isabela F. Menezes, Marluci Ghiraldi, Rodney A.F. Rodrigues, Andrezza M. Fernandes, Samantha C. Pinho

Publication date: May 2017
, Volume 63

Author(s): Juliana de Lima Marques, Graciele Daiana Funck, Guilherme da Silva Dannenberg, Claudio Eduardo dos Santos Cruxen, Shanise Lisie Mello El Halal, Alvaro Renato Guerra Dias, Ângela Maria Fiorentini, Wladimir Padilha da Silva