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Nanosensors in Food Safety: Current Status, Role, and Future Perspectives
Published in Deepak Kumar Verma, Megh R. Goyal, Hafiz Ansar Rasul Suleria, Nanotechnology and Nanomaterial Applications in Food, Health, and Biomedical Sciences, 2019
Listeria monocytogenes is the most virulent microorganism responsible for listeriosis, considered as a highly infectious disease. The innovative rapid detection method embracing nanotechnology for the detection of L. monocytogenes has been reported by Grossman et al.31 In this report, the sensing device was designed to monitor the binding rate between antibody-linked supermagnetic nanoparticles (ASMNPs) and target bacteria using a superconducting quantum interference technique (SQUID) at high-transition-temperature. The MNPs of 50 nm in size was coated with antibody and further, the bacterial sample has been added. The magnetic dipole moments were aligned by the application of pulsed magnetic field. The SQUID measures the magnetic flux dissipated in the form of Brownian rotation by the free nanoparticles and Neel relaxation by the bound nanoparticles to L. monocytogenes. The varied sample volume was taken 20 μL and 1 mL and the biomass concentration and detection limit were found to be 230 cells and 5.6 × 106 M in respective samples.
Introduction
Published in Jeanne Moldenhauer, Disinfection and Decontamination, 2018
Fieldbrook Foods Corporation of Dunkirk, New York, issued a voluntary recall of 20 cases of the Tops brand of Orange Cream Bars and 320 cases of the Meijer Purple Cow brand Orange Cream Bars due to the possibility that the product may be contaminated with Listeria monocytogenes. Consumption of food contaminated with Listeria monocytogenes can cause listeriosis, with high fever, severe headache, neck stiffness, and nausea as its primary symptoms. In rare cases, listeriosis is fatal; it can also cause miscarriages and stillbirths. Pregnant women, the very young, elderly, and persons with compromised immune systems are the most susceptible. (FDA, 2018a).
Risk perception of foodborne pathogens
Published in Charlotte Fabiansson, Stefan Fabiansson, Food and the Risk Society, 2016
Charlotte Fabiansson, Stefan Fabiansson
Several food groups have been associated with Listeria monocytogenes. Examples include dairy products and soft serve ice cream, raw vegetables and meat products. Ready to eat products like soft cheeses, fermented raw meat sausages, hot dogs and deli meats, raw and smoked fish and other seafood are frequently associated with listeriosis (Lianou and Sofos 2007).
Ruthenium(II) complexes bearing benzimidazole-based N-heterocyclic carbene (NHC) ligands as potential antimicrobial, antioxidant, enzyme inhibition, and antiproliferative agents
Published in Journal of Coordination Chemistry, 2022
Lamia Boubakri, Ahlem Chakchouk-Mtiba, Olfa Naouali, Lotfi Mellouli, Lamjed Mansour, Ismail Özdemir, Sedat Yaser, Mathieu Sauthier, Naceur Hamdi
S. aureus is an eminent human pathogen that can colonize the human host and cause severe life-threatening illnesses [33]. L. monocytogenes, a facultative anaerobic bacterium, is the species of pathogenic bacteria that causes the infection listeriosis. It can grow and reproduce inside the host's cells and is one of the most virulent foodborne pathogens [34]. Twenty to thirty percent of foodborne listeriosis infections in high-risk individuals may be fatal [35]. P. aeruginosa is an opportunistic gram-negative bacillus that is responsible for a wide variety of infections in humans, ranging from relatively uncomplicated urinary tract infections to severe and life threatening infections, including neonatal sepsis and chronic lung infections in patients with cystic fibrosis [36]. S. typhimurium, the causative agent of typhoid fever, is a major public health threat and an estimated 26.9 million cases resulting in approximately 217,000 deaths occur annually by this pathogenic bacterium [37]. C. albicans is a ubiquitous pathobiotic microorganism, a member of commensal flora, which can cause infections in both healthy and immunocompromised patients. Candidias is caused by C. albicans, which may be superficial or profound [38]. Despite the fact that common C. albicans infections are easily treatable, systemic infections, frequently of nosocomial nature, have a high mortality rate [39].
Control of Listeria monocytogenes in Refrigerated Ozonated Water
Published in Ozone: Science & Engineering, 2022
Antônio José de Rezende, Ernandes Rodrigues de Alencar, Márcia de Aguiar Ferreira, Wallas Felippe de Souza Ferreira
Listeria monocytogenes is a gram-positive, facultative anaerobic bacterium, capable of invading animal and human cells. This bacterial species causes listeriosis, which is a serious infection associated with encephalitis, abortions, meningitis and septicemia, being food an important serving source, both animal and fresh vegetables origins (Nalério et al. 2009). Listeriosis has a lower incidence when compared to other enteric diseases, but it is capable of generating more severe conditions and requires treatment with antibiotic therapy (Silva et al. 2016). This disease is associated with a high number of hospitalizations and has a lethality rate between 20 and 30%. Between 2013 and 2017, in the European Union, a significant increase in cases of this disease was observed (Dygico et al. 2019).