Research Publications (Food Safety)

Shenge, Kenneth C. et al. Although recent reports indicated that produce contamination with foodborne pathogens is widespread in Nigeria, the sources and magnitude of microbial contamination of fruits and vegetables on farms and in markets have not been thoroughly identified. To ascertain possible pathways of contamination, the frequency and magnitude of coliform and Escherichia coli contamination of tomatoes produced in northwest Nigeria was assessed on farms and in markets.

Balaguero, Alina N. et al. Overhead spray and brush roller (OSBR) treatment has been shown to remove significantly more Salmonella from tomato surfaces than flume treatment. However, OSBR is not widely used in tomato packing facilities compared with other commodities, and little is known about whether brushing causes microabrasions or other physical damage.

Lieberman, Vanessa M. et al. Whole and diced yellow onions (Allium cepa) were inoculated with five-strain cocktails of rifampin-resistant Escherichia coli O157:H7 or Salmonella and stored under conditions to simulate food service or consumer handling. The inoculum was grown in broth (for both whole and diced onion experiments) or on agar plates (for whole onion experiments).

Singh, Randhir et al. The purpose of this study was to determine the gene expression of Escherichia coli O157:H7 heat shocked in dairy compost. A two-step real-time PCR assay was used to evaluate the expression of stress and virulence genes in E. coli O157:H7 heat shocked in compost at 47.5°C for 10 min. Heat-shocked E.

Peng, Shengfeng et al. Eugenol is a major phenolic component with diverse biological activities. However, it is difficult to formulate into an aqueous solution due to poor water solubility, and this limits its application. In the present study, eugenol nanoliposomes (EN) were prepared by combining the ethanol injection method with the dynamic high-pressure microfluidization method. Good physicochemical characterizations of EN were obtained.

Giacometti, Federica et al. Two quantitative risk assessment (RA) models were developed to describe the risk of salmonellosis and listeriosis linked to consumption of raw milk sold in vending machines in Italy.

Palencia, Edwin R. et al.

Nielsen, Kristian Fog et al.In a recent article in Journal of Food Protection, Palencia and co-workers (34) published a survey on black Aspergillus species isolated from maize and peanuts reporting the production of some mycotoxins. An important claim in the article is their strains of Aspergillus niger
produce fumonisins B1 and B3. However, for many reasons, we consider the production of these two fumonisin isomers unlikely.

Davidson, P. Michael et al. Volume 77 of the Journal of Food Protection, published in 2014, contained 2,224 pages and 295 articles, which included 290 research papers (including research notes), and 5 review, general interest, and supplement papers (Table 1). By comparison, Volume 76 published in

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

Publication date: Available online 9 January 2015

Author(s): Hung King Tiong , Steven Hartson , Peter M. Muriana

Azole fungicides have been reported to be the most effective active substances in the control of Fusarium Head Blight (FHB) and in the reduction of the main mycotoxins that occur in cereal grain, such as deoxynivalenol (DON).

Of a total of 143 presumptive yeast isolates obtained from Galician (north-west Spain) short-ripened raw cow's milk starter-free cheeses, 27 exhibited microbial alcohol-conferred hemolytic (MACH) activity. Among the MACH-positive isolates, eight were identified as Yarrowia lipolytica and four as Kluyveromyces lactis. These isolates of potential technological interest were subjected to spot agar assays on special blood agar media prepared with skim milk, whole milk and cheese.

The glucose oxidase (GOD) produced by the fungus Aspergillus tubingensis will be used to improve the quality of bread. The GOD preparation was assessed in a set of toxicological tests to document its safety in use. The oral administration of the GOD preparation to rats at a dose level of 0.4 mg/kg body weight/day did not cause any overt toxic effect on the survival, food intake and body weight gain throughout the 4-week treatment period.

The accurate reliable detection and identification of microorganisms in food is critical to public safety. Consequently, it is extremely important to develop rapid and inexpensive methods for the detection of food microorganisms in order to minimize or even replace the traditional analysis methods that are expensive and time-consuming.

The aim of this study was to isolate lactic acid bacteria (LAB) from sucuk and to determine their antibiotic resistance and biogenic amine production abilities. A total of 65 presumptive LAB were isolated and they were molecularly identified as Pediococcus acidilactici (47.7%), Enterococcus faecium (36.9%), Lactobacillus sakei ssp. carnosus (4.6%), Lactobacillus sakei ssp.

Foodborne Pathogens and Disease , Vol. 0, No. 0.

Publication date: June 2015
, Volume 48
Author(s): John C. Frelka , Linda J. Harris

Diarrhoeagenic Escherichia coli (DEC) cause serious foodborne infections in humans. Total of 450 Shigatoxigenic E. coli (STEC) strains isolated from humans, animals and environment in Finland were examined by multiplex PCR targeting the virulence genes of various DEC pathogroups simultaneously. One per cent (3/291) of the human STEC and 14% (22/159) of the animal and environmental STEC had genes typically present in enterotoxigenic E. coli (ETEC).

Vesicle fusion governs many important biological processes, and imbalances in the regulation of membrane fusion can lead to a variety of diseases such as diabetes and neurological disorders. Here we show that the Vibrio parahaemolyticus effector protein VopQ is a potent inhibitor of membrane fusion based on an in vitro...

The spatial spread of the highly pathogenic avian influenza virus H5N1 and its long-term persistence in Asia have resulted in avian influenza panzootics and enormous economic losses in the poultry sector. However, an understanding of the regional long-distance transmission and seasonal patterns of the virus is still lacking. In this...

Publication date: June 2015
, Volume 52
Author(s): Andoni Zuriarrain , Juan Zuriarrain , Ana Isabel Puertas , María Teresa Dueñas , Iñaki Berregi

Foodborne Pathogens and Disease , Vol. 0, No. 0.

Publication date: Available online 7 January 2015

Author(s): Julie-Hélène Fairbrother , Simon Dufour , John Morris Fairbrother , David Francoz , Éric Nadeau , Serge Messier

Background. Previous population-based estimates in the United States have shown a relatively high prevalence of hepatitis E virus (HEV) antibody. We sought to determine whether changes in the prevalence of HEV antibody have occurred over time.