Research Publications (Food Safety)

Ten milkfish dumpling products purchased from retail stores in southern Taiwan were collected to determine the occurrence of biogenic amines, histamine-forming bacteria, and adulteration of pork. This study showed the high contents of aerobic plate count (APC), total coliforms (TC) and Escherichia coli in tested milkfish dumpling samples, whereas the average content of various biogenic amines in all tested samples was < 1.6 mg/100 g (< 0.05 to 1.54 mg/100 g).

Chuanling Zhang, Liang Guo, Xu Chu, Limeng Shen, Yuanyu Guo, Huali Dong, Jianfeng Mao, Stijn van der Veen

Jingjiao Li, Feng Xue, Zhenquan Yang, Xiaoping Zhang, Dexin Zeng, Guoxiang Chao, Yuan Jiang, Baoguang Li

Christian Penny, Beau Grothendick, Lin Zhang, Connie M. Borror, Duane Barbano, Angela J. Cornelius, Brent J. Gilpin, Clifton K. Fagerquist, William J. Zaragoza, Michele T. Jay-Russell, Albert J. Lastovica, Catherine Ragimbeau, Henry-Michel Cauchie, Todd R. Sandrin

Bradd J. Haley, James Pettengill, Sasha Gorham, Andrea Ottesen, Jeffrey S. Karns, Jo Ann S. Van Kessel

Ingestion of staphylococcal enterotoxins preformed by Staphylococcus aureus in food leads to staphylococcal food poisoning, the most prevalent foodborne intoxication worldwide. There are five major staphylococcal enterotoxins: SEA, SEB, SEC, SED, and SEE. While variants of these toxins have been described and were linked to specific hosts or levels or enterotoxin production, data on sequence variation is still limited.

Min-Goo Seo, Seung-Hun Lee, Dorene VanBik, In-Ohk Ouh, Sun-Hee Yun, Eunsang Choi, Yong-Soo Park, Sang-Eun Lee, Jong Wan Kim, Gil-Jae Cho, Oh-Deog Kwon, Dongmi Kwak

Vibrio parahaemolyticus is the most common cause of seafood-borne gastroenteritis worldwide and a blight on global aquaculture. This organism requires a horizontally acquired type III secretion system (T3SS2) to infect the small intestine, but knowledge of additional factors that underlie V. parahaemolyticus pathogenicity is limited. We used transposon-insertion sequencing to...

Using the squid-vibrio association, we aimed to characterize the mechanism through which Vibrio fischeri cells signal morphogenesis of the symbiotic light-emitting organ. The symbiont releases two cell-envelope molecules, peptidoglycan (PG) and lipopolysaccharide (LPS) that, within 12 h of light-organ colonization, act in synergy to trigger normal tissue development. Recent work has shown that outer membrane vesicles (OMVs) produced by V.

The iprA gene (formerly known as yaiV or STM0374) is located in a two-gene operon in the Salmonella enterica serovar Typhimurium genome and is associated with altered expression during spaceflight and rotating wall vessel culture conditions that increase virulence. However, iprA is uncharacterized in the literature. In this report, we present the first targeted characterization of this gene which reveals that iprA is highly conserved across Enterobacteriaceae. We found that S.

A structurally novel chitinase, Tc-ChiD, was identified from the hyperthermophilic archaeon Thermococcus chitonophagus, which can grow on chitin as the sole organic carbon source. The gene encoding Tc-ChiD contains regions corresponding to a signal sequence, two chitin-binding domains, and a putative catalytic domain.

Bacterial community composition and longitudinal fluctuations were monitored in a riverine system during and after Superstorm Sandy to better characterize inter- and intracommunity responses associated with the disturbance associated with a 100-year storm event.

In the United States, Salmonella enterica ser. Enteritidis (SE) is among the leading bacterial cause of foodborne illness via consumption of raw or undercooked eggs. The top Salmonella serovars implicated in U.S. foodborne outbreaks associated with chicken consumption include SE, Typhimurium (ST), Heidelberg (SH), Montevideo, Mbandka, Braenderup, and Newport.

Epidemiologic analyses have linked the frequency of human infections with Salmonella enterica subspecies enterica serovar Enteritidis to the consumption of contaminated eggs and thus to the prevalence of this pathogen in commercial egg-laying flocks. Contamination of the edible contents of eggs by Salmonella Enteritidis is a consequence of the colonization of reproductive tissues in systemically infected hens.

The microbial quality of eggs entering the hatchery represents an important critical control point for biosecurity and pathogen reduction programs in integrated poultry production. The development of safe and effective interventions to reduce microbial contamination on the surface of eggs will be important to improve the overall productivity and microbial food safety of poultry and poultry products.

Abstract

Aims

The aim of the present study was to assess the potential risk posed to the human population by the presence of L. monocytogenes serotype 1/2c in food based on the characterization of virulence factors of Listeria involved in the invasion of host cells and sensitivity to antimicrobial agents.

Abstract

Publication date: Available online 28 May 2016


Author(s): Yuehua Ke, Wenna Li, Yufei Wang, Mingjuan Yang, Jinpeng Guo, Shaoxia Zhan, Xinying Du, Zhoujia Wang, Min Yang, Juan Li, Wenfeng Li, Zeliang Chen

Publication date: December 2016
, Volume 70

Author(s): Nadarajan Abirami, H. Nidaullah, Li-Oon Chuah, Ahamed Kamal Shamila-Syuhada, S.R. Chandraprasad, Nurul Huda, Hassim Hasmaizal, Gulam Rusul

Summary

Publication date: December 2016
, Volume 70

Author(s): Nematollah Jonaidi-Jafari, Faham Khamesipour, Reza Ranjbar, Roohollah Kheiri

Publication date: December 2016
, Volume 70

Author(s): Vijay K. Juneja, Vasco Cadavez, Ursula Gonzales-Barron, Sudarsan Mukhopadhyay, Mendel Friedman

Abstract

Jingfeng Tong, Lu Meng, Xinwei Wang, Lixia Liu, Liangdong Lyu, Chuan Wang, Yang Li, Qian Gao, Chen Yang, Chen Niu

Nathalie Rolhion, R. Christopher D. Furniss, Grzegorz Grabe, Aindrias Ryan, Mei Liu, Sophie A. Matthews, David W. Holden