Research Publications (Food Safety)

Publication date: February 2016
, Volume 53, Part B
Author(s): J. Stoops, S. Crauwels, M. Waud, J. Claes, B. Lievens, L. Van Campenhout

Publication date: February 2016
, Volume 53, Part B
Author(s): Anais Auvolat, Nathalie Gnanou Besse

Ricarda Maria Schmithausen, Sophia Veronika Schulze-Geisthoevel, Franziska Stemmer, Mohamed El-Jade, Marion Reif, Sylvia Hack, Alina Meilaender, Gabriele Montabauer, Rolf Fimmers, Marijo Parcina, Achim Hoerauf, Martin Exner, Brigitte Petersen, Gabriele Bierbaum, Isabelle Bekeredjian-Ding

Publication date: Available online 30 September 2015

Author(s): B. Wade, A.L. Keyburn, T. Seemann, J.I. Rood, R.J. Moore

C. George et al.

MICROBIOLOGY Correction for “The opportunistic marine pathogen Vibrio parahaemolyticus becomes virulent by acquiring a plasmid that expresses a deadly toxin,” by Chung-Te Lee, I-Tung Chen, Yi-Ting Yang, Tzu-Ping Ko, Yun-Tzu Huang, Jiun-Yan Huang, Ming-Fen Huang, Shin-Jen Lin, Chien-Yu Chen, Shih-Shuen Lin, Donald V. Lightner, Han-Ching Wang, Andrew H.-J. Wang, Hao-Ching...

Methylmercury (MeHg) is a potent neurotoxin that is biomagnified approximately 1–10 million-fold in aquatic carnivores such as the Northern elephant seal (Mirounga angustirostris), whose excreta and molted pelage, in turn, constitute a source of environmental MeHg contamination at the base of marine food chains. The potential for this top-down contamination...

Translation of polyproline proteins leads to translation arrest. To overcome this ribosome stalling effect, bacteria depend on a specialized translation elongation factor P (EF-P), being orthologous and functional identical to eukaryotic/archaeal elongation factor e/aIF-5A (recently renamed “EF5”). EF-P binds to the stalled ribosome between the peptidyl-tRNA binding and tRNA-exiting sites, and stimulates peptidyl-transferase activity thus allowing translation to resume.

High accumulations of phytoplankton species that produce toxins are referred to as harmful algal blooms (HABs). HABs represent one of the most important sources of contamination in marine environments, as well as a serious threat to public health, fisheries, aquaculture-based industries, and tourism. Therefore, methods effectively controlling HABs with minimal impact on marine ecology are required.

e-First Articles.

Publication date: January 2016
, Volume 111
Author(s): Annachiara Berardinelli, Frederique Pasquali, Chiara Cevoli, Marcello Trevisani, Luigi Ragni, Rocco Mancusi, Gerardo Manfreda

The effect of Ziziphora clinopodioides (0.1 and 0.2%) and nisin (250 and 500 IU/g), both separately and in combination, on mesophilic, psychrotrophic and Enterobacteriaceae microorganisms and also on Staphylococcus aureus and Escherichia coli O157:H7 in raw beef patty during storage at refrigerated temperature for 9 days were evaluated. Carvacrol (64.22%), followed by thymol (19.22%), p-cymene (4.86%) and γ-terpinene (4.63%) were the most abundant components of the essential oil.

This study aimed to investigate the effect of different temperatures on survival of various strains of Yersinia enterocolitica during the storage of ultra-filtered (UF) white cheese. UF pasteurized cow milk was inoculated with 3 log colony-forming unit per gram of two standard strains (DSM 11502 and DSM 9499) and one native strain of Y. enterocolitica. Cheese samples were prepared according to the regular procedure and stored at 14, 8 and 25C.

Vibrio parahaemolyticus is an important seafood-borne pathogen. V. parahaemolyticus carrying either tdh or trh or both genes is considered a pathogenic strain. The objectives of this study were to examine the prevalence and concentration of V. parahaemolyticus in shrimp processed in a factory using most probable number (MPN) combined with either polymerase chain reaction (PCR) or loop-mediated isothermal amplification (LAMP) techniques.

This study investigated the effect of material typespolystyrene, polypropylene, glass, and stainless steel) and glucose addition on Staphylococcus aureus biofilm formation, and the relationship between biofilm formation measured by crystal violet (CV) staining and the number of biofilm cells determined by cell counts was studied. We also evaluated the efficacy of chlorine sanitizer on inhibiting various different types of S. aureus biofilms on the surface of stainless steel.

Publication date: February 2016
, Volume 53, Part B
Author(s): Dominic Dussault, Khanh Dang Vu, Monique Lacroix

Publication date: 4 January 2016
, Volume 216
Author(s): Elisabetta Lambertini, Robert L. Buchanan, Clare Narrod, Randall M. Ford, Robert C. Baker, Abani K. Pradhan

In Escherichia coli or Salmonella enterica, the stress associated mammalian hormones epinephrine (E) and norepinephrine (NE) trigger a signaling cascade by interacting with the QseC sensor protein. Here we show that V. cholerae, the causative agent of cholera, exhibits a specific response towards E and NE. These catecholates (0.1 mM) enhanced growth and swimming motility on soft agar of V. cholerae strain O395 in medium containing calf serum which simulated the environment within the host.

Flagellation in polar flagellates is one of the rare biosynthetic processes known to be numerically regulated in bacteria. Polar flagellates must spatially and numerically regulate flagellar biogenesis to create flagellation patterns for each species that are ideal for motility. FlhG ATPases numerically regulate polar flagellar biogenesis, yet FlhG orthologs are diverse in motif composition.

Canada geese (Branta canadensis) faeces have been shown to contain pathogenic protozoa and bacteria in numerous studies over the past 15 years. Further, increases in both the Canada geese populations and their ideal habitat requirements in the United States (US) translate to a greater presence of these human pathogens in public areas, such as recreational freshwater beaches.

Publication date: March 2016
, Volume 61
Author(s): Valentina Bernini, Elena Dalzini, Camilla Lazzi, Benedetta Bottari, Monica Gatti, Erasmo Neviani

Publication date: March 2016
, Volume 61
Author(s): Barbara Mullan, Vanessa Allom, Kirby Sainsbury, Lauren A. Monds