Research Publications (Food Safety)

Publication date: 2 March 2015
, Volume 196
Author(s): Amanda Brinch Kruse , Marianne Halberg Larsen , Peter Bæk Skou , Lis Alban

Publication date: January 2015
, Volume 305, Issue 1
Author(s): Wesam Salem , Deborah R. Leitner , Franz G. Zingl , Gebhart Schratter , Ruth Prassl , Walter Goessler , Joachim Reidl , Stefan Schild

Publication date: January 2015
, Volume 305, Issue 1
Author(s): Cecilia Ambrosi , Monica Pompili , Daniela Scribano , Dolores Limongi , Andrea Petrucca , Sonia Cannavacciuolo , Serena Schippa , Carlo Zagaglia , Milena Grossi , Mauro Nicoletti

Publication date: Available online 24 December 2014

Author(s): Jack C. Leo , Philipp Oberhettinger , Monika Schütz , Dirk Linke

Publication date: Available online 24 December 2014

Author(s): Melanie Mühlenkamp , Philipp Oberhettinger , Jack C. Leo , Dirk Linke , Monika S. Schütz

Publication date: January 2015
, Volume 305, Issue 1
Author(s): Christian Deiters , Volker Günnewig , Alexander W. Friedrich , Alexander Mellmann , Robin Köck

Aims
The objective of this study was the fundamental investigation of the antimicrobial efficiency of various hop extracts against selected foodborne pathogens in vitro, as well as their activity against Listeria monocytogenes in a model meat marinade and on marinated pork tenderloins.

Aims

The bulk of bacterial protein secretion occurs through the conserved SecY translocation channel that is powered by SecA-dependent ATP-hydrolysis. Many Gram-positive bacteria including the human pathogen Listeria monocytogenes, possess an additional non-essential specialized ATPase, SecA2. SecA2-dependent secretion is required for normal cell morphology and virulence in L. monocytogenes, however the mechanism of export via this pathway is poorly understood. L.

The anaerobic pathogen Clostridium perfringens encodes either toxin genes or antibiotic resistance determinants on a unique family of conjugative plasmids that have a novel conjugation region, the tcp locus. Studies on the paradigm conjugative plasmid from C. perfringens, the 47-kb tetracycline resistance plasmid pCW3, have identified several tcp-encoded proteins that are involved in conjugative transfer and form part of the transfer apparatus.

To meet the requirements of high-quality safe productsstarter cultures are used to produce fermented sausages. The effects of 3 commercial starter cultures, namely SM-194, T-SPX, and SM-181, on histamine accumulation and quality parameters including microbial quality, pH, water activity, and total volatile base nitrogen, as well as the color and texture properties, were evaluated during the fermentation and ripening of fermented sausages.

As a 1st stepthis study aimed at investigating the microbial quality of liquid egg white in a French egg processing company. Thirty raw and 33 pasteurized liquid egg white samples were analyzed. Pasteurization was globally found efficient on mesophilic contaminants (1.7 ± 1.6 and 0.8 ± 0.9 log CFU/mL in raw and pasteurized samples, respectively), including for the control of Salmonella. However, Gram-positive enterococci were still detected in the pasteurized samples.

Aim
To determine the presence of the T6SS in Campylobacter jejuni from diverse sources.