نتایج جستجو برای: e coli inactivation
تعداد نتایج: 1166261 فیلتر نتایج به سال:
Electrocatalysis using low-cost materials is a promising, economical strategy for remediation of water contaminated with organic chemicals and microorganisms. Here, we report the use iron phosphide (Fe2P) precatalyst electrocatalytic oxidation; degradation representative aromatic hydrocarbon, dye rhodamine B (RhB); inactivation Escherichia coli (E. coli) bacteria. It was found that during anodi...
To investigate the transport and fate of fecal pollution at Great Lakes beaches and the health risks associated with swimming, the near-shore waters of Lake Michigan and two tributaries discharging into it were examined for bacterial indicators of human fecal pollution. The enterococcus human fecal pollution marker, which targets a putative virulence factor--the enterococcal surface protein (es...
Crystalline TiO₂ has shown its great photocatalytic properties in bacterial inactivation. This work presents a design fabrication of low-cost, layered TiO₂ films assembled reactors and a study of their performance for a better understanding to elucidate the photocatalytic effect on inactivation of E. coli in water. The ability to reduce the number of bacteria in water samples for the layered Ti...
Oxidative stress leads to membrane lipid peroxidation, which yields products causing variable degrees of detrimental oxidative modifications in cells. Reactive oxygen species (ROS) are the key regulators in this process and induce lipid peroxidation in Escherichia coli. Application of nonthermal (cold) plasma is increasingly used for inactivation of surface contaminants. Recently, we reported a...
The inhibition of Escherichia coli ATCC 25922 (E. coli), Staphylococcus aureus ATCC6538 (S. aureus), Salmonella Enteritidis 13076 Enteritidis), and Listeria monocytogenes DSM12464 (L. monocytogenes) is one the main aims food industry. This study was first in which use ultrasound microwave power were applied to optimize values bioactive components, amino acids, mineral compositions tangerine jui...
The application of pulsed electric fields (PEFs) for the inactivation Escherichia coli, suspended in a protein shake beverage and diluted with sterilized distilled water was carried out. Square bipolar pulses range 25–40 kV/cm field intensities were applied at different frequencies (400–900 Hz) to investigate effect PEF conditions on microbial population proteins relevant this functional bevera...
• The introduction of solar light to Fe(VI)/PMS process improved E. coli inactivation. Fe(VI)/PMS/solar system has good potentials for micropollutants’ removal. low amounts oxidants and wide operational pH makes its application possible. bacterial inactivation pathways were proposed system. In this work, the effect as a “reducing agent” in disinfection decontamination water was investigated. Si...
A new microwave heating process was developed for cooking microwaveable foods containing raw meats. A commercially available inverter-based microwave oven was modified for pasteurization of mechanically tenderized beef, inoculated with Escherichia coli O157:H7 (approximately 5 log(10) CFU/g) and packaged in a 12-oz CPET tray containing 150-mL de-ionized water. The new microwave heating system w...
Since heat sensitivity of fruits and vegetables limits the application of thermal inactivation processes, new emerging inactivation technologies have to be established to fulfill the requirements of food safety without affecting the produce quality. The efficiency of inactivation treatments has to be ensured and monitored. Monitoring of inactivation effects is commonly performed using tradition...
This study was carried out to determine the prevalence of foodborne pathogens, Escherichia coli, E. coli O157:H7, Listeria monocytogenes and Campylobacter spp. on slaughtered cattle in Isfahan, Iran. A total of 203 cattle carcasses were sampled by surface section of neck meat taken immediately after slaughter and analyzed using microbiological examinations. Suspected colonies to E. coli O157:H7...
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