Survival and growth behavior of common foodborne pathogens in falafel paste under different storage temperatures
Int J Food Microbiol. 2024 Mar 2;413:110609. doi: 10.1016/j.ijfoodmicro.2024.110609. Epub 2024 Feb 1.ABSTRACTFalafel is a popular breakfast food in the Middle East that has been recently involved in several outbreaks of foodborne illnesses. The aim of the study was to explore the growth behavior of Salmonella enterica, Escherichia coli O157:H7, Shigella sonnie, Shigella flexneri, Listeria monocytogenes and Staphylococcus aureus in falafel paste (FP) under different storage temperatures (4, 10, or 24 °C) for 14 days. FP (pH = 6.2, aw = 0.96) was inoculated with 5.0 to 6.0 log CFU/g of each of the pathogens separately. Salm...
Source: International Journal of Food Microbiology - February 8, 2024 Category: Food Science Authors: Murad A Al-Holy Amin N Olaimat Anas A Al-Nabulsi Hamzah Al-Qadiri Mahmoud H Abughoush Tareq M Osaili Mutamed Ayyash Maysa Alawneh Barbara A Rasco Source Type: research
Transfer of Salmonella, Escherichia coli O157:H7 and Listeria monocytogenes from contaminated soilless substrate and seeds to microgreens
This study suggests a high risk of pathogen population transferring to microgreens in case of seed or soilless substrate contamination when pathogen growth or survival is supported in plant nutrient solution.PMID:38325258 | DOI:10.1016/j.ijfoodmicro.2024.110612 (Source: International Journal of Food Microbiology)
Source: International Journal of Food Microbiology - February 7, 2024 Category: Food Science Authors: Sefa I şık B ülent Çetin Zeynal Topalcengiz Source Type: research
Degradation of < em > Listeria monocytogenes < /em > biofilm by phages belonging to the genus < em > Pecentumvirus < /em >
Appl Environ Microbiol. 2024 Feb 5:e0106223. doi: 10.1128/aem.01062-23. Online ahead of print.ABSTRACTListeria monocytogenes is a pathogenic foodborne bacterium that is a significant cause of mortality associated with foodborne illness and causes many food recalls attributed to a bacteriological cause. Their ability to form biofilms contributes to the persistence of Listeria spp. in food processing environments. When growing as biofilms, L. monocytogenes are more resistant to sanitizers used in the food industry, such as benzalkonium chloride (BAC), as well as to physical stresses like desiccation and starvation. Lytic pha...
Source: Applied and Environmental Microbiology - February 5, 2024 Category: Microbiology Authors: Stevan Cuci ć Tim Ells Anilda Guri Andrew M Kropinski Cezar M Khursigara Hany Anany Source Type: research
Impacts of water activity on survival of Listeria innocua and Enterococcus faecium NRRL B-2354 in almonds during steam treatments
Int J Food Microbiol. 2024 Mar 2;413:110592. doi: 10.1016/j.ijfoodmicro.2024.110592. Epub 2024 Jan 20.ABSTRACTRaw almonds have been associated with Salmonella outbreaks and multiple recalls related to Listeria monocytogenes contamination. While steam treatment has been approved for pasteurizing both conventional and organic whole almonds, there is limited understanding of how water activity (aw) influences the effectiveness of steam treatments in decontaminating almonds. Hence, this study aimed to assess and compare the efficacy of steam treatments against Listeria innocua and Enterococcus faecium NRRL B-2354, the known no...
Source: International Journal of Food Microbiology - February 3, 2024 Category: Food Science Authors: Zi Hua Bhim Bahadur Thapa Frank Younce Juming Tang Mei-Jun Zhu Source Type: research
Profiling and source tracking of the microbial populations and resistome present in fish products
This study investigated the microbial composition, prevalence of Listeria spp., and resistome structures in three catfish processing facilities in the southeastern United States. The 16S rRNA gene sequencing revealed that the observed richness and Shannon diversity index increased significantly from fish to fillet. Beta diversity analysis showed distinct clustering of microbial communities between fish, environment, and fillet samples. Fast expectation-maximization microbial source tracking (FEAST) algorithm demonstrated that the microbiota presents in the processing environment contributed 48.2 %, 62.4 %, and 53.7 % to th...
Source: International Journal of Food Microbiology - February 2, 2024 Category: Food Science Authors: Xiran Li Hongye Wang Hisham Abdelrahman Anita Kelly Luke Roy Luxin Wang Source Type: research
Efficacy of disinfectant and bacteriophage mixture against planktonic and biofilm state of Listeria monocytogenes to control in the food industry
Int J Food Microbiol. 2024 Mar 2;413:110587. doi: 10.1016/j.ijfoodmicro.2024.110587. Epub 2024 Jan 20.ABSTRACTFresh produce and animal-based products contaminated with Listeria monocytogenes have been the main cause of listeriosis outbreaks for many years. The present investigation explored the potential of combination treatment of disinfectants with a bacteriophage cocktail to control L. monocytogenes contamination in the food industry. A mixture of 1 minimal inhibitory concentration (MIC) of disinfectants (sodium hypochlorite [NaOCl], hydrogen peroxide [H2O2], and lactic acid [LA]) and multiplicity of infection (MOI) 100...
Source: International Journal of Food Microbiology - February 1, 2024 Category: Food Science Authors: Kye-Hwan Byun Sang Ha Han Min Woo Choi Byoung-Hu Kim Sang-Do Ha Source Type: research
Molecules, Vol. 29, Pages 685: Antibacterial and Antibiofilm Effects of Photodynamic Treatment with Curcuma L. and Trans-Cinnamaldehyde against Listeria monocytogenes
In conclusion, Cur demonstrated excellent photosensitizing properties against Lm in both planktonic and biofilm states. The efficacy of Ca was lower than that of Cur. However, Ca bears potent antibiofilm effects, which vary depending on the surface on which Lm resides. Therefore, this study may help identify more effective plant-based compounds to combat L. monocytogenes in an environmentally sustainable manner. (Source: Molecules)
Source: Molecules - February 1, 2024 Category: Chemistry Authors: Aleksandra Zimi ńska Izabela Lipska Joanna Gajewska Anna Draszanowska Manuel Sim ões Magdalena A. Olszewska Tags: Article Source Type: research
GSE220480 Transcriptome Sequencing of mice eosinophils upon Listeria monocytogenes (L.m.) infection
Contributor : Jun ZhouSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusMature eosinophils were differentiated from mouse bone marrow progenitorsWe performed transcriptome sequencing on Listeria monocytogenes infected eosinophils and resting eosinophils to shed light on the transcriptional changes of cytokines and chemokines. (Source: GEO: Gene Expression Omnibus)
Source: GEO: Gene Expression Omnibus - January 31, 2024 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research
Genomic characterization of Listeria monocytogenes and Listeria innocua isolated from milk and dairy samples in Ethiopia
Listeriosis caused by Listeria monocytogenes often poses a significant threat to vulnerable populations. Dairy products have been implicated in outbreaks of listeriosis worldwide. In Ethiopia, studies have identi... (Source: BMC Genetics)
Source: BMC Genetics - January 31, 2024 Category: Genetics & Stem Cells Authors: Xiaoyuan Wei, Anwar Hassen, Karen McWilliams, Karen Pietrzen, Taejung Chung, Marysabel M éndez Acevedo, Tyler Chandross-Cohen, Edward G. Dudley, Jessie Vipham, Hassen Mamo, Tesfaye Sisay Tessema, Ashagrie Zewdu and Jasna Kovac Tags: Research Source Type: research
Impact of lactic acid bacteria strains against Listeria monocytogenes biofilms on various food-contact surfaces
Arch Microbiol. 2024 Jan 30;206(2):80. doi: 10.1007/s00203-023-03811-6.ABSTRACTListeria monocytogenes is one of the most important foodborne pathogens, causing listeriosis, a disease characterized by high mortality rates. This microorganism, commonly found in food production environments and transmitted to humans by consuming contaminated food, has the ability to form biofilms by attaching to a wide variety of surfaces. Traditional hygiene and sanitation procedures are not effective enough to completely remove L. monocytogenes biofilms from food-contact surfaces, which makes them a persistent threat to food safety. Alterna...
Source: Archives of Microbiology - January 30, 2024 Category: Microbiology Authors: Emine Din çer Source Type: research
Listeria monocytogenes utilizes glutathione and limited inorganic sulfur compounds as sources of essential cysteine
Infection and Immunity, Ahead of Print. (Source: Infection and Immunity)
Source: Infection and Immunity - January 30, 2024 Category: Infectious Diseases Authors: John C. BerudePaul KennoucheMichelle L. ReniereDaniel A. Portnoy1Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA2Department of Plant and Microbial Biology, University of California, Berkeley, Berkele Source Type: research
Hypervirulent clonal complex (CC) of Listeria monocytogenes in fresh produce from urban communities
This study aimed to determine the prevalence and virulome of Listeria in fresh produce distributed in urban communities.MethodsA total of 432 fresh produce samples were collected from farmer’s markets in Michigan and West Virginia, USA, resulting in 109 pooled samples. Listeria spp. were isolated and L. monocytogenes was subjected to genoserogrouping by PCR and genotyping by pulsed-field gel electrophoresis (PFGE). Multi-locus sequence typing (MLST) and core-genome multi-locus sequence typing (cgMLST) were conducted for clonal identification.ResultsForty-eight of 109 samples (44.0%) were contaminated with Listeria spp. L...
Source: Frontiers in Microbiology - January 29, 2024 Category: Microbiology Source Type: research
Brainstem Encephalitis as a Cause of Sudden Infant Death Syndrome
Sudden unexpected infant death or sudden infant death syndrome (SIDS) are terms used for children younger than 1 year of age who die suddenly without an obvious cause before investigation. SIDS often occurs during sleep and affects nearly 3500 children in the US each year. Despite many measures taken to prevent the illness, the incidence remains unchanged since the year 2000. In this issue of JAMA Neurology, Ramachandran et al report an investigation of 64 cases of SIDS. The authors found elevated levels of neopterin in the cerebrospinal fluid of 6 cases. Because the major source of neopterin is activated macrophages, it i...
Source: JAMA Neurology - January 29, 2024 Category: Neurology Source Type: research
Potential public health hazards related to consumption of poultry contaminated with antibiotic resistant Listeria monocytogenes in Egypt
Listeria monocytogenes is an important foodborne pathogen that incorporated into many serious infections in human especially immunocompromised individuals, pregnant women, the elderly, and newborns. The consumpt... (Source: BMC Microbiology)
Source: BMC Microbiology - January 29, 2024 Category: Microbiology Authors: Amira Ibrahim Zakaria and Rana Fahmi Sabala Tags: Research Source Type: research
Effective Inhibition of Listeria monocytogenes Biofilm Formation by Satureja rechingeri Essential Oil: Mechanisms and Implications
In this study, we investigated the inhibitory potential of Satureja rechingeri essential oil (Sr-EO) against L. monocytogenes growth and biofilm formation. Gas chromatography-mass spectrometry analysis revealed a high carvacrol content in Sr-EO, a compound with known antimicrobial properties. We examined the effects of Sr-EO on initial attachment and preformed biofilms, using crystal violet and MTT assays to quantify attached biomass and metabolic activity, respectively. Our results demonstrated that Sr-EO not only prevented initial attachment but also effectively disrupted preformed biofilms, indicating its potential as a...
Source: Current Microbiology - January 27, 2024 Category: Microbiology Authors: Siavash Maktabi Roya Rashnavadi Mohammad Reza Tabandeh Mohammad Mahmoodi Sourestani Source Type: research
