Research Publications (Food Safety)

Abstract

From 24 December to 24 July 2015, 174 cases were reported in a nationwide salmonellosis outbreak in Sweden: 108 cases were connected to a single restaurant. A spice mix, containing dried vegetables from the restaurant tested positive for the outbreak strain. Additional spice mixes with similar content from different suppliers also tested positive. The outbreak investigation suggests there could be a risk of contaminated products being also on the market in other countries.

Publication date: December 2015
, Volume 52
Author(s): Qianwang Zheng, Marta Mikš-Krajnik, Craig D'Souza, Yishan Yang, Da-Jeong Heo, Si-Kyung Kim, Seung-Cheol Lee, Hyun-Gyun Yuk

Kinsey, Thomas P. et al.

Mazza, Roberta et al.

Terao, Yoshitaka et al.

Wang, Rong et al.

Davidson, Gordon R. et al.

King, Amanda M. et al. The antimicrobial impact of purified and natural sources of both nitrite and ascorbate were evaluated against Clostridium perfringens during the postthermal processing cooling period of deli-style turkey breast. The objective of phase I was to assess comparable concentrations of nitrite (0 or 100 ppm) and ascorbate (0 or 547 ppm) from both purified and natural sources.

Mohr, T. B. et al. Heat-resistant spores of Clostridium perfringens may germinate and multiply in cooked meat and poultry products when the rate and extent of cooling does not occur in a timely manner. Therefore, six cooling models (PMP 7.0 broth model; PMIP uncured beef, chicken, and pork models; Smith-Schaffner version 3; and UK IFR ComBase Perfringens Predictor) were evaluated for relative performance in predicting growth of C.

Skinner, Guy E. et al. The potential threat of terrorist attacks against the United States food supply using neurotoxin produced by Clostridium botulinum (BoNT) has resulted in the need for studying the effect of various food process operations on the bioavailability of this toxin. The objective of this study was to evaluate C. botulinum type A neurotoxin bioavailability after a simulated hot fill juice bottling operation. C.

Ramirez-Hernandez, Alejandra et al. Campylobacter infections are a leading cause of human bacterial gastroenteritis in the United States and are a major cause of diarrheal disease throughout the world. Colonization and subsequent infection and invasion of Campylobacter require that the bacteria adhere to the surface of host cells. Agents that inhibit adherence could be used prophylactically to reduce Campylobacter carriage and infection.

Chen, Wei et al. The objective of this study was to investigate the antimicrobial activities of carvacrol, cinnamaldehyde, and lauric arginate (LAE) against Salmonella in a low water activity (aw) glycerol-sucrose model and in peanut paste with different fat concentrations. Salmonella Tennessee was inoculated into the model and the low fat (<5%) and high fat (50%) peanut paste adjusted to aw 1.0, 0.7, 0.5, and 0.3 and with or without cinnamaldehyde, carvacrol, or LAE.

Wang, Yin et al. Hypermutable pathogens can easily acquire mutation opportunities, as well as antimicrobial resistance, and are tremendous hazards to food safety and public health. In this study, a total of 96 (7.6%) hypermutators were identified from 1,264 Salmonella isolates recovered from retail foods. Pulsed-field gel electrophoresis analysis indicated that hypermutators were genetically diverse.

Monu, Emefa Angelica et al. Produce has been associated with a rising number of foodborne illness outbreaks. While much produce is consumed raw, some is treated with mild heat, such as blanching or cooking.

Lee, Chi-Ching et al. This study investigated the role of extracellular cellulose production by Shiga toxin–producing Escherichia coli (STEC) on attachment to lettuce and spinach in different water hardness environments. Two cellulose-producing wild-type STEC strains, 19 (O5:H−) and 49 (O103:H2), and their cellulose-deficient derivatives were used. Strain 49 also produced colanic acid as a constituent of its extracellular polymeric substances.

Changkaew, Kanjana et al. Administration of antimicrobials to food-producing animals increases the risk of higher antimicrobial resistance in the normal intestinal flora of these animals. The present cross-sectional study was conducted to investigate antimicrobial susceptibility and extended-spectrum β-lactamase (ESBL)–producing strains and to characterize class 1 integrons in Escherichia coli in healthy swine in Thailand. All 122 of the tested isolates had drug-resistant phenotypes.

Jin, L. et al. A 3-year (2009 to 2011) grazing study was conducted to assess the effects of purple prairie clover (PPC; Dalea purpurea Vent) on fecal shedding of total Escherichia coli in cattle. Three pasture types were used in the experiment: bromegrass (Check), mixed cool season grasses with PPC (Simple), and mixed cool and warm grasses with PPC (Complex). Pastures were rotationally grazed during a summer and fall grazing period.

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Publication date: December 2015
, Volume 52
Author(s): A. Traversa, G.R. Gariano, S. Gallina, D.M. Bianchi, R. Orusa, L. Domenis, P. Cavallerio, L. Fossati, R. Serra, L. Decastelli

Publication date: 15 October 2015
, Volume 211
Author(s): Yingying Liu, Zhaohuan Zhang, Yilong Wang, Yong Zhao, Ying Lu, Xiaowei Xu, Jun Yan, Yingjie Pan

Publication date: 15 October 2015
, Volume 211
Author(s): Nelson Justino Gomes Neto, Marciane Magnani, Beatriz Chueca, Diego García-Gonzalo, Rafael Pagán, Evandro Leite de Souza