Research Publications (Food Safety)

The outbreak of airborne pathogens, such as methicillin-resistant Staphylococcus aureus (MRSA) through bioaerosol, and their molecular characterization around domestic poultry farming areas, was not completely understood. This imposes risk of a MRSA-associated health threat for the relevant livestock food production units.

Comprehensive Reviews in Food Science and Food Safety, EarlyView. Abstract

Phase variation (PV) is a phenomenon common to a variety of bacterial species for niche adaption and survival in challenging environments. Among Campylobacter species, PV depends on the presence of intergenic and intragenic hypermutable G/C homopolymeric tracts. The presence of phase-variable genes is of especial interest for species that cause foodborne or zoonotic infections in humans.

Upon infection, Mycobacterium leprae, an obligate intracellular bacillus, induces accumulation of cholesterol-enriched lipid droplets (LDs) in Schwann cells (SCs). LDs are promptly recruited to M. leprae-containing phagosomes, and inhibition of this process decreases bacterial survival, suggesting that LD recruitment constitutes a mechanism by which host-derived lipids are delivered to intracellular M. leprae. We previously demonstrated that M.

by Ondrej Cerny, Camilla Godlee, Romina Tocci, Nancy E. Cross, Haoran Shi, James C. Williamson, Eric Alix, Paul J. Lehner, David W. Holden

by Kenji Fujiwara, Atsushi Abe, Toshihiro Masatsugu, Tatsuya Hirano, Kiyohisa Hiraka, Masayuki Sada

Background

Abstract

Abstract

Author(s): Xin Zhao, Fanfan Yang, Yurou Wang, Ying Zhang

Author(s): Gongqi Liu, De'an Pan, Yufeng Wu, Haoran Yuan, Lu Yu, Wei Wang

Author(s): Cristiane Rosa da Silva, Cristina Tonial Simões, Juliano Kobs Vidal, Magdiél Antonio Reghelin, Carlos Alberto Araújo de Almeida, Carlos Augusto Mallmann

Author(s): Yaxin Gu, Zexun Lü, Chenyang Cao, Huanjing Sheng, Wei Li, Shenghui Cui, Ruichao Li, Xin Lü, Baowei Yang

A cross-sectional study was carried out to determine the seroprevalence of Toxoplasma gondii and associated risk factors in pigs in the largest pork-producing region in Cuba. Serum samples from 420 pigs, including 210 sows and 210 post-weaning pigs, were tested for antibodies against T. gondii using a commercial indirect enzyme-linked immunosorbent assay. Anti-T. gondii antibodies were detected in 56 animals (13.3%, 95% CI: 10.1–16.6).

Enteric viruses have been described as important contaminants in fresh and ready-to-eat foods such as sandwiches, deli meat and dairy products. This is a cross-sectional randomized survey to estimate the prevalence of norovirus and human adenovirus (HAdV) from 100 Brazilian artisanal raw milk cheese samples (Minas and Coalho) obtained from different agroindustries in four producing regions in the states of Minas Gerais and one in Piauí, respectively.

The dinoflagellates of the genus Gambierdiscus are found in almost all oceans and seas between the coordinates 35° N and 35° S. Gambierdiscus and Fukuyoa are producers of ciguatoxins (CTXs), which are known to cause foodborne disease associated with contaminated seafood. The occurrence and effects of CTXs are well described in the Pacific and the Caribbean.

Journal of Food Safety, EarlyView. Abstract

Journal of Food Processing and Preservation, Accepted Article. Abstract

Journal of Food Processing and Preservation, Accepted Article. Abstract The aim of this study was to investigate the effect of ascorbic, citric and lactic acid (1% and 5%) on the survival of Listeria (L.) monocytogenes and Escherichia (E.) coli O157:H7 inoculated on fresh Atlantic salmon stored at 4 ± 1°C. In this study, in general, L. monocytogenes and E. coli O157: H7 population in samples treated with organic acids were significantly lower than in non-treated fish samples.

Journal of Applied Microbiology, Accepted Article. ABSTRACT
Aims
In this study, the efficacy of using vacuumed hydrogen peroxide vapor (VHPV) to inactivate foodborne pathogens in whole dried black pepper (Piper nigrum) and powdered dried red pepper (Capsicum annuum) was evaluated.

In Japan’s Kanto region, the number of Salmonella enterica serovar Chester infections increased temporarily between 2014 and 2016. Concurrently with this temporal increase in the Kanto region, S. Chester isolates belonging to one clonal group were causing repetitive outbreaks in Europe. A recent study reported that the European outbreaks were associated with travelers who had been exposed to contaminated food in Morocco, possibly seafood.

Vibrio parahaemolyticus is a common foodborne pathogen that causes gastroenteritis worldwide. Determining its prevalence and genetic diversity will minimize the risk of infection and the associated economic burden. Multilocus sequence typing (MLST) is an important tool for molecular epidemiology and population genetic studies of bacteria. Here, we analyzed the genetic and evolutionary relationships of 162 V. parahaemolyticus strains isolated in the Guangdong Province, China, using MLST.

Sepsis caused by Clostridium perfringens infection is rare but often fatal. The most serious complication leading to poor prognosis is massive intravascular hemolysis (MIH). However, the molecular mechanism underlying this fulminant form of hemolysis is unclear. In the present study, we employed 11 clinical strains isolated from patients with C. perfringens septicemia and subdivided these isolates into groups H and NH: septicemia with (n = 5) or without (n = 6) MIH, respectively.

Little is known about the distribution of hepatitis C virus (HCV) genotypes among people who inject drugs (PWID) in North African countries, including Tunisia. This study aims to describe HCV genotypes circulating among Tunisian PWID. A cross-sectional study was conducted, and 128 HCV-positive PWID were recruited between 2018 and 2019 from community-based harm reduction centers.

Antimicrobial resistance (AMR) is a critical challenge worldwide as it impacts public health, especially via contamination in the food chain and in healthcare-associated infections. In relation to farming, the systems used, waste management on farms, and the production line process are all determinants reflecting the risk of AMR emergence and rate of contamination of foodstuffs.

Non-thermal atmospheric plasma (NTAP) has gained attention as a decontamination and shelf-life extension technology. In this study its effect on psychrotrophic histamine-producing bacteria (HPB) and histamine formation in fish stored at 0–5°C was evaluated.