Research Publications (Food Safety)

This study investigated the ability of two strains of Lactobacillus plantarum isolated from akamu a Nigerian fermented maize food to tolerate acid and bile condition. Auto-aggregation and co-aggregation with pathogens: Escherichia coli NCTC 11560 and Salmonella Enteritidis NCTC 5188 were also investigated. This was aimed at establishing preliminary probiotic potentials of these none intestinal L. plantarum isolates.

Toxins, Vol. 10, Pages 30: Biological Control Products for Aflatoxin Prevention in Italy: Commercial Field Evaluation of Atoxigenic Aspergillus flavus Active Ingredients

Toxins doi: 10.3390/toxins10010030

Authors:
Antonio Mauro
Esther Garcia-Cela
Amedeo Pietri
Peter Cotty
Paola Battilani

Publication date: February 2018
Food and Chemical Toxicology, Volume 112

Author(s): Adriana Trifan, Sebastian E.W. Opitz, Roland Josuran, Andreas Grubelnik, Nils Esslinger, Samuel Peter, Sarah Bräm, Nadja Meier, Evelyn Wolfram

Yen-Te Liao, Irwin A. Quintela, Kimberly Nguyen, Alexandra Salvador, Michael B. Cooley, Vivian C. H. Wu

Toxins, Vol. 10, Pages 28: Determination of Multi-Class Mycotoxins in Tartary Buckwheat by Ultra-Fast Liquid Chromatography Coupled with Triple Quadrupole Mass Spectrometry

Toxins doi: 10.3390/toxins10010028

Authors:
Guixing Ren
Yichen Hu
Jinming Zhang
Liang Zou
Gang Zhao

Fiji recently experienced a sharp increase in reported typhoid fever cases. To investigate geographic distribution and environmental risk factors associated with Salmonella enterica serovar Typhi infection, we conducted a cross-sectional cluster survey with associated serologic testing for Vi capsular antigen–specific antibodies (a marker for exposure to Salmonella Typhi in Fiji in 2013.

Publication date: 30 May 2018
, Volume 249

Author(s): Lei Lv, Yongdong Jin, Xiaojiao Kang, Yangyang Zhao, Chengbi Cui, Zhijun Guo

Publication date: Available online 3 January 2018


Author(s): Geoffroy LIEGEON, Tristan DELORY, Mathieu PICARDEAU

Publication date: Available online 3 January 2018


Author(s): Huifang Wang, Zhangjiang He, Linli Luo, Xin Zhao, Zhuoyue Lu, Tingying Luo, Min Li, Yongjun Zhang

e-First Articles.

Online Ahead of Print.

Online Ahead of Print.

Publication date: April 2018
, Volume 138

Author(s): Cyrelys Collazo, Jordi Giné-Bordonaba, Ingrid Aguiló-Aguayo, Ismael Povedano, Ariadna Bademunt, Inmaculada Viñas

Publication date: 30 May 2018
, Volume 249

Author(s): Barbara Feist, Rafal Sitko

Chickens with good or poor feed efficiency (FE) have been shown to differ in their intestinal microbiota composition. This study investigated differences in the fecal bacterial community of highly and poorly feed-efficient chickens at 16 and 29 days posthatch (dph) and evaluated whether a fecal microbiota transplant (FMT) from feed-efficient donors early in life can affect the fecal microbiota in chickens at 16 and 29 dph and chicken FE and nutrient retention at 4 weeks of age.

Mycotoxin contamination of cereal grains causes well-recognized toxicities in animals and humans, but the fate of plant-bound masked mycotoxins in the gut is less well understood. Masked mycotoxins have been found to be stable under conditions prevailing in the small intestine but are rapidly hydrolyzed by fecal microbiota.

Staphylococcus aureus is part of the nasal microbiome of many humans and has become a significant public health burden due to infections with antibiotic-resistant strains, including methicillin-resistant S. aureus (MRSA) strains. Several lineages of S. aureus, including MRSA, are found in livestock species and can be acquired by humans through contact with animals.

Nitrate-reducing iron(II)-oxidizing bacteria have been known for approximately 20 years. There has been much debate as to what extent the reduction of nitrate and the oxidation of ferrous iron are coupled via enzymatic pathways or via abiotic processes induced by nitrite formed by heterotrophic denitrification.

Mercury (Hg), one of the most toxic and widely distributed heavy metals, has a high affinity for thiol groups. Thiol groups reduce and sequester Hg. Therefore, low-molecular-weight (LMW) and protein thiols may be important cell components used in Hg resistance. To date, the role of low-molecular-weight thiols in Hg detoxification remains understudied.

Many pathogenic bacteria use sophisticated survival strategies to overcome harsh environmental conditions. One strategy is the formation of slow-growing subpopulations termed small colony variants (SCVs). Here we characterize an SCV that spontaneously emerged from an axenic Salmonella enterica serovar Typhimurium water culture. We found that the SCV harbored a frameshift mutation in the glutamine synthetase gene glnA, leading to an ~90% truncation of the corresponding protein.

Heat-stable toxin (STa)-producing enterotoxigenic Escherichia coli (ETEC) strains are a top cause of moderate-to-severe diarrhea in children from developing countries and a common cause of travelers' diarrhea. Recent progress in using STa toxoids and toxoid fusions to induce neutralizing anti-STa antibodies has accelerated ETEC vaccine development.

High-pressure processing is a nonthermal method of food preservation that uses pressure to inactivate microorganisms. To ensure the effective validation of process parameters, it is important that the design of challenge protocols consider the potential for resistance in a particular species. Herein, the responses of 99 diverse Salmonella enterica strains to high pressure are reported.

The critically endangered elkhorn coral (Acropora palmata) is affected by white pox disease (WPX) throughout the Florida Reef Tract and wider Caribbean. The bacterium Serratia marcescens was previously identified as one etiologic agent of WPX but is no longer consistently detected in contemporary outbreaks. It is now believed that multiple etiologic agents cause WPX; however, to date, no other potential pathogens have been thoroughly investigated.

Journal of Food Protection, Volume 82, Issue 1, Page 120-127, January 2019.

Journal of Food Protection, Volume 82, Issue 1, Page 151-158, January 2019.