Research Publications (Food Safety)

Author(s): Hongfei Zhang, Xinyi Pang, Hon Luen Seck, Weibiao Zhou

Author(s): Jeroen Koomen, Linda Huijboom, Xuchuan Ma, Marcel H. Tempelaars, Sjef Boeren, Marcel H. Zwietering, Heidy M.W. den Besten, Tjakko Abee

Author(s): Tina Beck Hansen, Somaya Abdalas, Iman Al-Hilali, Lisbeth Truelstrup Hansen Listeria monocytogenes is a potentially fatal foodborne pathogen that can be found in various ready-to-eat (RTE) products. It tolerates adverse conditions such as high salt concentrations and refrigerated storage, thus, the elimination of the pathogen in food processing often relies on heat processing.

Comprehensive Reviews in Food Science and Food Safety, EarlyView. Listeria monocytogenes continues to pose a food safety risk in ready-to-eat foods, including fresh and soft/semisoft cheeses. Despite L. monocytogenes being detected regularly along the cheese production continuum, variations in cheese style and intrinsic/extrinsic factors throughout the production process (e.g., pH, water activity, and temperature) affect the potential for L. monocytogenes survival and growth.

Author(s): Pan Mao, Yan Wang, Lin Gan, Hui Sun, Yiqian Wang, Lingling Li, Shunshi Ji, Zexuan Song, Huaying Jiang, Changyun Ye

Lactobacillus plantarum is one of common probiotics in fermented foods. Quorum sensing (QS) is a common communication way within bacteria. It is not clear whether the probiotic properties of L. plantarum mediated by QS. Here, Lb. plantarum YM-4–3 was examined for resistance of pH, bile, antimicrobial and luxS gene expression pattern.

Listeria monocytogenes is a pathogenic bacterium associated with RTE meat products sold at the retail level.

Listeriosis, a foodborne illness caused by Listeria monocytogenes , has relatively low incidence, but a substantial mortality rate, particularly in immunocompromised populations. Because of the known risk of L. monocytogenes and other pathogens in produce, immunocompromised individuals are often placed on neutropenic diets that exclude fresh produce. Therefore, this study aimed to evaluate several kitchen-scale treatments as potential interventions to reduce L.

The public health risk posed by Listeria monocytogenes in ready-to-eat (RTE) foods depends on the effectiveness of its control at every stage of the production process and the strain involved. Analytical methods currently in use are limited to the identification/quantification of L. monocytogenes at the species level, without distinguishing virulent from hypovirulent strains. In these products, according to EU Regulation 2073/2005, L.

Author(s): Damkerng Bundidamorn, Wannakarn Supawasit, Sudsai Trevanich

Author(s): Tingting Gu, Apisak Meesrisom, Yaguang Luo, Quynh N. Dinh, Sophia Lin, Manyun Yang, Arnav Sharma, Ruogu Tang, Jinde Zhang, Zhen Jia, Patricia D. Millner, Arne J. Pearlstein, Boce Zhang

Author(s): Ifigeneia P. Makariti, Nikos C. Grivokostopoulos, Panagiotis N. Skandamis

Author(s): Jessica A. Gray, P. Scott Chandry, Mandeep Kaur, Chawalit Kocharunchitt, John P. Bowman, Edward M. Fox

Enterococcus faecium WEFA23 was previously found effectively against adherence and colonization of Listeria monocytogenes CMCC54007, which might be closely related to its surface layer protein (SLP). In this study, the protective of SLP of E. faecium WEFA23 against infection of L. monocytogenes CMCC54007 was systemically investigated. In vitro assay showed that SLP actively inhibited L.

The effects of environmental stresses on microorganisms have been well-studied, and cellular responses to stresses such as heat, cold, acids, and salts have been extensively discussed. Although high pressure processing (HPP) is becoming more popular as a preservation method in the food industry, the characteristics of the cellular damage caused by high pressure are unclear, and the microbial response to this stress has not yet been well-explored.

Author(s): Daniel Berdejo, Elisa Pagán, Natalia Merino, Diego García-Gonzalo, Rafael Pagán

Author(s): Jae-Hyun Yoon, Do-Young Jeong, Su-Bin Lee, Se-Ri Kim

Author(s): Xiaobing Jiang, Siyu Ren, Yimin Geng, Congyi Jiang, Guosheng Liu, Hailei Wang, Tao Yu, Yu Liang

Roof-harvested rainwater (RHRW) was investigated for the presence of the human pathogenic bacteria Mycobacterium tuberculosis (M. tuberculosis), Yersinia spp. and Listeria monocytogenes (L. monocytogenes). While Yersinia spp. were detected in 92% (n = 25) of the RHRW samples, and L. monocytogenes and M. tuberculosis were detected in 100% (n = 25) of the samples, a significantly higher mean concentration (1.4 × 103 cells/100 mL) was recorded for L. monocytogenes over the sampling period.

We report here the closed genome sequences of three clinical Listeria monocytogenes strains of multilocus sequence typing (MLST) sequence type 8 (ST8). These strains are representatives of three separate listeriosis outbreak clusters (Alpha1, Pi4, and Sigma1) that affected Germany between 2012 and 2020.

We report the whole-genome sequence of Listeria monocytogenes UKVDL9 and an edited draft genome sequence of L. monocytogenes 2010L-2198. Both are neurotropic lineage III strains; UKVDL9 was isolated from a sheep brain, and 2010L-2198 was isolated from a human subject with rhombencephalitis.

Author(s): Qiming Chen, Chenhui Yao, Cuiyun Yang, Zhanmin Liu, Sibao Wan

by Ahmed Gaballa, Sriya Sunil, Etienne Doll, Sarah I. Murphy, Tyler Bechtel, Veronica Guariglia-Oropeza, Martin Wiedmann

Author(s): Jiaming Huang, Bowen Chen, Qiao-Hui Zeng, Yang Liu, Haiquan Liu, Yong Zhao, Jing Jing Wang

Background: Plasma-generated compounds (PGCs) such as plasma-processed air (PPA) or plasma-treated water (PTW) offer an increasingly important alternative for the control of microorganisms in hard-to-reach areas found in several industrial applications including the food industry. To this end, we studied the antimicrobial capacity of PTW on the vitality and biofilm formation of Listeria monocytogenes, a common foodborne pathogen.