Article
Agronomy
Xiaoqing Hu, Xiaoying Sun, Shuanghua Luo, Shuyan Wu, Zhaojuan Chu, Xiujuan Zhang, Zhaojun Liu, Jiaxin Wu, Xiaohong Wang, Chang Liu, Xiaoyuan Wang
Summary: The study demonstrated the effectiveness of blue light (BL) in inactivating Salmonella Enteritidis on eggshells, while maintaining eggshell freshness. BL-treated eggs showed lower weight loss, higher Haugh unit, and higher total amino acid content during storage period, indicating the advantage of BL treatment in maintaining egg quality.
Article
Food Science & Technology
Amandeep Singh, Veerachandra Yemmireddy
Summary: This study investigated the effect of post-harvest storage conditions on the growth kinetics of Salmonella in fresh-cut papaya, finding that the highest growth rate of Salmonella was observed at 21 degrees Celsius and 90% relative humidity. Therefore, better control over storage temperature and relative humidity is crucial in mitigating the risk of Salmonella in papaya.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Jiin Jung, Donald W. Schaffner
Summary: This study developed mathematical models to predict the survival of Salmonella strains on whole cucumbers at different temperature and relative humidity conditions. Validation results confirmed the reliability of the models, which will be beneficial for managing the risk of Salmonella on whole cucumbers.
Article
Multidisciplinary Sciences
M. A. Etheves, N. Choisis, S. Alvarez, F. Dalleau, J. Hascoat, V Gallard, E. Cardinale
Summary: The study identified main risk factors for Salmonella spp. persistence in broiler flocks on Reunion Island. Improved cleaning-disinfection and pest control in the poultry sector are crucial to prevent the pathogen's persistence. Pests infected with Salmonella spp., such as mealworms in poultry litter, contribute to the risk of pathogen persistence.
Article
Agriculture, Dairy & Animal Science
Xiuxiu Miao, Ya'nan Zhao, Huilong Li, Yanru Ren, Geng Hu, Jingchao Yang, Liying Liu, Xianyao Li
Summary: Salmonella enterica serovar Enteritidis is a common pathogen that can cause significant public health problems and economic losses. This study investigated the genetic resistance of poultry to Salmonella infection and found that inflammatory genes were activated in chickens infected with Salmonella Enteritidis. The findings provide important insights into the molecular mechanisms and epigenetic regulation in chicken response to Salmonella infection.
Article
Environmental Sciences
Ozan Eskikaya, Melis Gun, Raouf Bouchareb, Zeynep Bilici, Nadir Dizge, Rameshprabu Ramaraj, Deepanraj Balakrishnan
Summary: One of the most important environmental issues today is the inadequate treatment of wastewater containing dyes. Photocatalytic based wastewater treatment processes have gained attention as a new, economically viable, and promising approach. This study investigated the photocatalytic activity of eggshell-CaO produced from waste chicken eggshells for decolorization of Safranin and Reactive Red 180 dyes.
Article
Agriculture, Dairy & Animal Science
Zunita Zakaria, Latiffah Hassan, Zawiyah Sharif, Norazah Ahmad, Rohaya Mohd Ali, Suraya Amir Husin, Norfitriah Mohamed Sohaimi, Shafini Abu Bakar, Bashiru Garba
Summary: This study investigated the pathogenicity, antimicrobial resistance, and multilocus sequence types of Salmonella enterica subspecies enterica serovar Enteritidis in the central region of peninsular Malaysia. The isolates showed multidrug-resistance features and had various virulence genes. The findings suggest potential risks to humans and livestock from this foodborne pathogen.
Article
Biotechnology & Applied Microbiology
Jiin Jung, Donald W. Schaffner
Summary: This study developed mathematical models to predict the growth of Salmonella on sliced cucumbers under different temperature and relative humidity conditions. The results showed that temperature had an impact on the growth rate of Salmonella, while relative humidity did not. These models will be useful for future microbial risk assessments and predictions of Salmonella behavior on sliced cucumbers.
JOURNAL OF FOOD PROTECTION
(2022)
Article
Microbiology
Yue Jiang, Zhen-Yu Wang, Qiu-Chun Li, Meng-Jun Lu, Han Wu, Cai-Yue Mei, Peng-Cheng Shen, Xinan Jiao, Jing Wang
Summary: This study identified extensively drug-resistant Salmonella enterica serovar Kentucky sequence type 198 (ST198) strains from chicken meat products in China. These strains carry numerous resistance genes clustered in the chromosomes, possibly acquired through mobile elements. The emergence and dissemination of extensively drug-resistant S. Kentucky ST198 pose a severe clinical and public health threat, requiring continuous surveillance.
MICROBIOLOGY SPECTRUM
(2023)
Article
Microbiology
Liya Zhang, Laila Ben Said, Moussa Sory Diarra, Ismail Fliss
Summary: The study evaluated the efficacy of natural antimicrobial compound mixtures in reducing Salmonella counts on poultry carcasses. Results showed that the combination of reuterin with lactic acid or microcin J25 had a synergistic effect, significantly decreasing Salmonella counts.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Food Science & Technology
M. Victoria Aviles, Elisa Fernanda Naef, Rosa Ana Abalos, Mercedes C. Piaggio, Liliana H. Lound, Daniela F. Olivera
Summary: This study determined the survival and thermal resistance of two Salmonella serovars inoculated onto chicken-meat and vegetables patty. The D-values and times to achieve reduction of Salmonella concentrations were calculated for different temperature treatments. The results provide valuable information for food safety decision-making.
INTERNATIONAL JOURNAL OF GASTRONOMY AND FOOD SCIENCE
(2022)
Article
Microbiology
Wenjian Shi, Wenli Tang, Yafei Li, Yu Han, Lulu Cui, Shuhong Sun
Summary: This study compared the prevalence, serotype distribution, emergence of extended-spectrum beta-lactamases (ESBLs), antimicrobial resistance, and genetic resistance mechanisms in Salmonella enterica among different breeds of breeder chickens. The results showed that the prevalence of Salmonella enterica isolates from imported breeds was higher, ESBL-producing isolates were mainly recovered from domestic breed chicken farms, and multidrug-resistant Salmonella enterica contamination was widespread among different breeds of breeder chickens.
Article
Microbiology
Khaloud O. Alzahrani, Fahad M. AL-Reshoodi, Elaf A. Alshdokhi, Ashwaq S. Alhamed, Meshari A. Al Hadlaq, Mohammed I. Mujallad, Lenah E. Mukhtar, Amani T. Alsufyani, Abdullah A. Alajlan, Malfi S. Al Rashidy, Mashan J. Al Dawsari, Saleh I. Al-Akeel, Meshari H. AL-Harthi, Abdulaziz M. Al Manee, Majed F. Alghoribi, Suliman M. Alajel
Summary: This study utilized whole genome sequencing (WGS) technology to investigate the genotypic and phenotypic antimicrobial resistance profiles, phylogenic relatedness, plasmid and virulence composition of Salmonella enterica strains isolated from chicken meat samples. The results revealed four distinct serotypes and identified the distribution of resistance genes and plasmids among the strains. The presence of Salmonella pathogenicity islands and stress/virulence genes was also observed. This study provides important insights into the genomic characterization of Salmonella isolates from retail chicken meat and highlights the potential usefulness of WGS technology in epidemiological surveillance and outbreak investigations.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Chelsea E. Course, Patrick Boerlin, Durda Slavic, Jean-Pierre Vaillancourt, Michele T. Guerin
Summary: Salmonella enterica and Escherichia coli levels in commercial broiler chicken barns can be reduced through appropriate sanitation procedures, with dry cleaning being preferable for enterica control and disinfection being preferable for E. coli reduction. Factors such as the type of flooring, season, and timing of sample collection can impact the presence and concentration of these bacteria.
Article
Microbiology
Luqing Cui, Xiangru Wang, Yue Zhao, Zhong Peng, Pan Gao, Zhengzheng Cao, Jiawei Feng, Fan Zhang, Kaixuan Guo, Min Wu, Huanchun Chen, Menghong Dai
Summary: This study investigated the virulence phenotypes and genomic features of nine Salmonella enterica subsp. enterica isolates, with SE211 showing notable virulence features due to a combination of multiple virulence genes. The presence of various mobile genetic elements and a CRISPR-Cas system in SE211 suggests synergistic functions in gene transfer and immune defense. The study contributes to understanding the bacterial virulence mechanisms in Salmonella enterica subsp. enterica.
Article
Biotechnology & Applied Microbiology
Lihan Huang, Nurul Hawa Ahmad, Vijay Juneja, Erika Stapp-Kamotani, Jose Gabiola, Udit Minocha, Robert Phillips, Marie Hooker, Isabel Walls, Kim Cook, James Lindsay
Summary: This study investigated the growth kinetics of foodborne pathogen B. cereus during the commercial production of liquid egg yolk using PLA(2) treatment. The results showed that B. cytotoxicus NVH391-98 can grow prolifically at 50 degrees C, with estimated minimum, optimum, and maximum temperatures of 16.7-18.5, 47.8-48.1, and 52.1-52.4 degrees C, respectively. The dynamic model was validated with isothermal curves and it was found that holding the temperature below 15 degrees C or above 55 degrees C can effectively prevent the growth of B. cytotoxicus in egg yolk.
Article
Biotechnology & Applied Microbiology
Giacomo Mantegazza, Robin Duncan, Nicolo Telesca, Giorgio Gargari, Susanna Perotti, Patrizia Riso, Simone Guglielmetti
Summary: This study investigates whether salad-associated LAB can survive the gastrointestinal transit (GIT) and contribute to the gut microbiota. The results suggest that salad-associated LAB can survive in the gastrointestinal tract, but their quantity does not significantly alter the composition of the gut microbiota.
Article
Biotechnology & Applied Microbiology
Itsaso Baztarrika, Adrian Salazar-Sanchez, Lorena Laorden, Ilargi Martinez-Ballesteros, Rodrigo Alonso, Irati Martinez-Malaxetxebarria
Summary: The infection mechanisms of Arcobacter are still uncertain. This study found that Arcobacter isolates from food and water sources were able to adhere and invade Caco-2 cells, and carried at least two virulence markers. A. butzleri showed higher virulent activity compared to A. cryaerophilus, while A. lanthieri, A. skirrowii, and A. vitoriensis exhibited even higher adhesion and invasion values. Sewage isolates were more adherent and invasive, and had a higher gene content. The association between cadF and hecA with high adhesion capability was identified for the first time.
Article
Biotechnology & Applied Microbiology
Balaji Sundararaman, Karen Shapiro, Andrea Packham, Lauren E. Camp, Rachel S. Meyer, Beth Shapiro, Richard E. Green
Summary: Pathogenic bacteria, viruses, fungi, and protozoa can cause food and waterborne diseases, and surveillance methods are needed. In this study, CNER method was used to prepare enrichment baits for difficult-to-grow pathogens. This method allows direct sequencing of pathogens from samples.
Article
Biotechnology & Applied Microbiology
Guanghui Zhou, Pengcheng Dong, Xin Luo, Lixian Zhu, Yanwei Mao, Yunge Liu, Yimin Zhang
Summary: Interactions between bacterial species in the formation of dual-species biofilms in the food industry are affected by environmental stresses, such as temperature and pH. This study found that the combination of cold and acid stresses significantly increased biofilm formation, and different temperatures resulted in variations in the presence of specific bacterial species and the secretion of extracellular substances. The findings provide valuable insights for addressing mixed biofilms in food processing under diverse stressful conditions.
Article
Biotechnology & Applied Microbiology
Carmen Sanchez, Sonia Garde, Jose Maria Landete, Javier Calzada, Dave J. Baker, Rhiannon Evans, Arjan Narbad, Melinda J. Mayer, Marta Avila
Summary: This study sequenced and compared the genomes of bacteriophages active against C. tyrobutyricum, identifying novel species and phage proteins. A phage showed high lytic activity against C. tyrobutyricum cells and remained stable under different environmental conditions. Additionally, engineered strains successfully delivered endolysin and fluorescent protein to dairy products without affecting their technological properties.
Article
Biotechnology & Applied Microbiology
Danai Etter, Michael Biggel, Mariella Greutmann, Nicole Cernela, Sophia Johler
Summary: Bacillus cytotoxicus is a thermotolerant bacterium that is linked to rare but sometimes fatal cases of diarrheal disease. It is mostly found in dehydrated foods containing potato starch or insects and may be missed in routine screening.
Article
Biotechnology & Applied Microbiology
Tong Jin, Xiangjun Zhan, Liuxin Pang, Bo Peng, Xinpeng Zhang, Wenxiu Zhu, Baowei Yang, Xiaodong Xia
Summary: The study found that CpxAR TCS is an important regulatory mechanism for the virulence of C. sakazakii. Mutants showed weakened adhesion, invasion, and survival ability, and exhibited attenuated virulence in animal models. In addition, CpxAR TCS is involved in regulating the expression of genes associated with bacterial virulence and cellular invasion.
Article
Biotechnology & Applied Microbiology
Soo-Hwan Kim, Sang-Hyun Park, Jun-Bae Ahn, Dong-Hyun Kang
Summary: In this study, a semi continuous SHS system was developed to inactivate foodborne pathogens on radish seed surfaces and enhance the seeds' salinity tolerance. The results showed that higher temperature and more treatments led to a significant reduction in microbial count on the seed surface.
Article
Biotechnology & Applied Microbiology
Yujun Zhai, Weina Tian, Kewei Chen, Linshu Lan, Jianquan Kan, Hui Shi
Summary: This research investigates the role of flagella-related genes in the adhesion of E. coli O157:H7 and the effects of certain cations on bacterial adhesion and motility. The results demonstrate that flagellar-mediated motility is critical in the early stage of adhesion, and the presence of Fe2+, Ca2+, and Mn2+ affects the adhesion and motility of wildtype strains but not flagellar function-impaired strains. These findings provide new insights into the mechanisms of bacterial adhesion and have implications for the development of anti-adhesion agents.
Article
Biotechnology & Applied Microbiology
Mariana Marggraf, Andrea Barac, Jens Andre Hammerl, Stefan Hertwig
Summary: Isolating Yersinia enterocolitica from food is challenging due to overgrowth by other microflora and the lack of a selective medium. The authors improved the standard isolation procedure, resulting in a more sensitive method, reduced background bacteria, and time savings.
Article
Biotechnology & Applied Microbiology
Rafael D. Chaves, Samuel H. Kumazawa, Amin Mousavi Khaneghah, Veronica O. Alvarenga, Humberto M. Hungaro, Anderson S. Sant'Ana
Summary: This study investigated the susceptibility to sanitizers and biofilm-forming ability of 43 Salmonella enterica and Listeria monocytogenes strains on stainless steel surfaces. The results showed variations in susceptibility to sanitizers and biofilm resistance among different strains of the pathogens, with chlorine compounds being more effective in inactivating planktonic cells and biofilms.
Article
Biotechnology & Applied Microbiology
So Yeong Mun, Wooje Lee, Soo-Young Lee, Ji Yoon Chang, Hae Choon Chang
Summary: This study reveals that lactobacilli with a strong defense system dominate the final stage of kimchi fermentation and proposes a model for the succession mechanism of kimchi lactobacilli.