Read by QxMD icon Read

hydrogen peroxide decontamination

Sina Matavos-Aramyan, Mohsen Moussavi, Hedieh Matavos-Aramyan, Sara Roozkhosh
Three novel modified advanced oxidation process systems including ascorbic acid-, pro-oxidants- and ascorbic acid-pro-oxidants-modified Fenton system were utilized to study the disinfection efficiency on Cryptosporidium-contaminated drinking water samples. Different concentrations of divalent and trivalent iron ions, hydrogen peroxide, ascorbic acid and pro-oxidants at different exposure times were investigated. These novel systems were also compared to the classic Fenton system and to the control system which comprised of only hydrogen peroxide...
February 16, 2017: Free Radical Biology & Medicine
Paul Fletcher, Daniel Deluiz, Eduardo Mb Tinoco, John L Ricci, Dennis P Tarnow, Justine Monnerat Tinoco
The treatment of peri-implant disease is one of the most controversial topics in implant dentistry. The multifactorial etiology and the myriad proposed techniques for managing the problem make successful decontamination of an implant surface affected by peri-implantitis one of the more unpredictable challenges dental practitioners have to face. This article presents the first known published case report demonstrating human histologic evidence of reosseointegration using a plastic curette for mechanical debridement and dilute sodium hypochlorite, hydrogen peroxide, and sterile saline for chemical detoxification...
February 14, 2017: International Journal of Periodontics & Restorative Dentistry
Mairéad Connor, Padrig B Flynn, Derek J Fairley, Nikki Marks, Panagiotis Manesiotis, William G Graham, Brendan F Gilmore, John W McGrath
Clostridium difficile is a spore forming bacterium and the leading cause of colitis and antibiotic associated diarrhoea in the developed world. Spores produced by C. difficile are robust and can remain viable for months, leading to prolonged healthcare-associated outbreaks with high mortality. Exposure of C. difficile spores to a novel, non-thermal atmospheric pressure gas plasma was assessed. Factors affecting sporicidal efficacy, including percentage of oxygen in the helium carrier gas admixture, and the effect on spores from different strains representing the five evolutionary C...
February 3, 2017: Scientific Reports
Devendra T Mourya, Hamish C Shahani, Pragya D Yadav, Pradip V Barde
BACKGROUND & OBJECTIVES: Various conventional methods such as gaseous, vapour and misting systems, fogging, manual spray and wipe techniques employing a number of chemical agents are used for decontamination of enclosed spaces. Among all these methods, use of aerosolized formaldehyde is the most preferred method due to cost-effectiveness and practical aspects. However, being extremely corrosive in nature generating very irritating fumes and difficulty in maintaining a high level of gas concentration, many laboratories prefer the vaporization of hydrogen peroxide (H 2 O 2 ) as an alternative...
August 2016: Indian Journal of Medical Research
Thriveen S C Mana, Brett Sitzlar, Jennifer L Cadnum, Annette L Jencson, Sreelatha Koganti, Curtis J Donskey
Because manual cleaning is often suboptimal, there is increasing interest in use of automated devices for room decontamination. We demonstrated that an ultrasonic room fogging system that generates submicron droplets of peracetic acid and hydrogen peroxide eliminated Clostridium difficile spores and vegetative pathogens from exposed carriers in hospital rooms and adjacent bathrooms.
November 18, 2016: American Journal of Infection Control
Adrianne N Edwards, Samiha T Karim, Ricardo A Pascual, Lina M Jowhar, Sarah E Anderson, Shonna M McBride
Clostridium difficile is a Gram-positive, sporogenic and anaerobic bacterium that causes a potentially fatal colitis. C. difficile enters the body as dormant spores that germinate in the colon to form vegetative cells that secrete toxins and cause the symptoms of infection. During transit through the intestine, some vegetative cells transform into spores, which are more resistant to killing by environmental insults than the vegetative cells. Understanding the inherent resistance properties of the vegetative and spore forms of C...
2016: Frontiers in Microbiology
Silke Schelenz, Ferry Hagen, Johanna L Rhodes, Alireza Abdolrasouli, Anuradha Chowdhary, Anne Hall, Lisa Ryan, Joanne Shackleton, Richard Trimlett, Jacques F Meis, Darius Armstrong-James, Matthew C Fisher
BACKGROUND: Candida auris is a globally emerging multidrug resistant fungal pathogen causing nosocomial transmission. We report an ongoing outbreak of C. auris in a London cardio-thoracic center between April 2015 and July 2016. This is the first report of C. auris in Europe and the largest outbreak so far. We describe the identification, investigation and implementation of control measures. METHODS: Data on C. auris case demographics, environmental screening, implementation of infection prevention/control measures, and antifungal susceptibility of patient isolates were prospectively recorded then analysed retrospectively...
2016: Antimicrobial Resistance and Infection Control
J A Otter, P Burgess, F Davies, S Mookerjee, J Singleton, M Gilchrist, D Parsons, E T Brannigan, J Robotham, A H Holmes
OBJECTIVE: To perform an economic evaluation on the cost associated with an outbreak of carbapenemase-producing Enterobacteriaceae (CPE). METHODS: We performed an observational economic evaluation of an outbreak of CPE (NDM-producing Klebsiella pneumoniae) affecting 40 patients in a group of five hospitals across three sites in West London. Costs were split into actual expenditure (including anti-infective costs, enhanced CPE screening, contact precautions, temporary ward-based monitors of hand and environmental practice, and environmental decontamination), and 'opportunity cost' (staff time, bed closures and elective surgical missed revenue)...
March 2017: Clinical Microbiology and Infection
Hongtao Lu, Zhiliang Zhu, Hua Zhang, Jianyao Zhu, Yanling Qiu, Linyan Zhu, Stephan Küppers
Acetaminophen can increase the risk of arsenic-mediated hepatic oxidative damage; therefore, the decontamination of water polluted with coexisting acetaminophen and arsenic gives rise to new challenges for the purification of drinking water. In this work, a three-metal layered double hydroxide, namely, Cu-Zn-Fe-LDH, was synthesized and applied as a heterogeneous Fenton-like oxidation catalyst and adsorbent to simultaneously remove acetaminophen (Paracetamol, PR) and arsenic. The results showed that the degradation of acetaminophen was accelerated with decreasing pH or increasing H2O2 concentrations...
September 28, 2016: ACS Applied Materials & Interfaces
J P Wood, M W Calfee, M Clayton, N Griffin-Gatchalian, A Touati, S Ryan, L Mickelsen, L Smith, V Rastogi
AIMS: To evaluate the use of relatively low levels of hydrogen peroxide vapour (HPV) for the inactivation of Bacillus anthracis spores within an indoor environment. METHODS AND RESULTS: Laboratory-scale decontamination tests were conducted using bacterial spores of both B. anthracis Ames and Bacillus atrophaeus inoculated onto several types of materials. Pilot-scale tests were also conducted using a larger chamber furnished as an indoor office. Commercial off-the-shelf (COTS) humidifiers filled with aqueous solutions of 3 or 8% hydrogen peroxide (H2 O2 ) were used to generate the HPV inside the mock office...
December 2016: Journal of Applied Microbiology
Dike O Ukuku, Sudarsan Mukhopadhyay, David Geveke, Modesto Olanya, Brendan Niemira
Surface structure and biochemical characteristics of bacteria and produce play a major role in how and where bacteria attach, complicating decontamination treatments. Whole cantaloupe rind surfaces were inoculated with Salmonella, Escherichia coli O157:H7, and Listeria monocytogenes at 10(7) CFU/ml. Average population size of Salmonella, Escherichia coli O157:H7, and L. monocytogenes recovered after surface inoculation was 4.8 ± 0.12, 5.1 ± 0.14, and 3.6 ± 0.13 log CFU/cm(2), respectively. Inoculated melons were stored at 5 and 22°C for 7 days before washing treatment interventions...
August 2016: Journal of Food Protection
Muhammad Kashif Javaid, Mehrban Ashiq, Muhammad Tahir
Pesticides are widely used for the control of weeds, diseases, and pests of cultivated plants all over the world, mainly since the period after the Second World War. The use of pesticides is very extensive to control harm of pests all over the globe. Persistent nature of most of the synthetic pesticides causes serious environmental concerns. Decontamination of these hazardous chemicals is very essential. This review paper elaborates the potential of various biological agents in decontamination of agricultural soils...
2016: Scientifica
Robert Banaschik, Gerhard Burchhardt, Katja Zocher, Sven Hammerschmidt, Juergen F Kolb, Klaus-Dieter Weltmann
Pulsed corona plasma and pulsed electric fields were assessed for their capacity to kill Legionella pneumophila in water. Electrical parameters such as in particular dissipated energy were equal for both treatments. This was accomplished by changing the polarity of the applied high voltage pulses in a coaxial electrode geometry resulting in the generation of corona plasma or an electric field. For corona plasma, generated by high voltage pulses with peak voltages of +80kV, Legionella were completely killed, corresponding to a log-reduction of 5...
December 2016: Bioelectrochemistry
David J Weber, Hajime Kanamori, William A Rutala
PURPOSE OF REVIEW: This article reviews 'no touch' methods for disinfection of the contaminated surface environment of hospitalized patients' rooms. The focus is on studies that assessed the effectiveness of ultraviolet (UV) light devices, hydrogen peroxide systems, and self-disinfecting surfaces to reduce healthcare-associated infections (HAIs). RECENT FINDINGS: The contaminated surface environment in hospitals plays an important role in the transmission of several key nosocomial pathogens including methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus spp...
August 2016: Current Opinion in Infectious Diseases
David J Weber, Stephanie A Consoli, William A Rutala
Environmental surfaces have been clearly linked to transmission of key pathogens in health care facilities, including methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus, Clostridium difficile, norovirus, and multidrug-resistant gram-negative bacilli. For this reason, routine disinfection of environmental surfaces in patient rooms is recommended. In addition, decontamination of shared medical devices between use by different patients is also recommended. Environmental surfaces and noncritical shared medical devices are decontaminated by low-level disinfectants, most commonly phenolics, quaternary ammonium compounds, improved hydrogen peroxides, and hypochlorites...
May 2, 2016: American Journal of Infection Control
David J Weber, William A Rutala, Deverick J Anderson, Luke F Chen, Emily E Sickbert-Bennett, John M Boyce
Over the last decade, substantial scientific evidence has accumulated that indicates contamination of environmental surfaces in hospital rooms plays an important role in the transmission of key health care-associated pathogens (eg, methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, Clostridium difficile, Acinetobacter spp). For example, a patient admitted to a room previously occupied by a patient colonized or infected with one of these pathogens has a higher risk for acquiring one of these pathogens than a patient admitted to a room whose previous occupant was not colonized or infected...
May 2, 2016: American Journal of Infection Control
Harry Stone, David See, Autumn Smiley, Anthony Ellingson, Jessica Schimmoeller, Lukas Oudejans
Sulfur mustard (HD) and Lewisite (L) are blister agents that have a high potential for terrorist use; Agent Yellow (HL) is the eutectic mixture of HD and L. Bench-scale testing was used to determine the residual amount of these chemical warfare agents remaining on three building materials (wood, metal and glass) after application of various decontaminants (household bleach, full strength and dilute; hydrogen peroxide 3% solution; and EasyDECON(®) DF200). All decontaminants reduced the amount of L recovered from coupons...
August 15, 2016: Journal of Hazardous Materials
Maria Luisa Bernuzzi
Decontamination with hydrogen peroxide is a technology widely used to reduce microbial contamination. A typical application of this technology is in the decontamination of sterility test isolators. This article describes how to decontaminate sterility test isolators and validate the process in order to demonstrate that the microbiological target has been achieved and that the risk of false negatives due to residuals of hydrogen peroxide is excluded. Hydrogen peroxide can adversely affect some materials, resulting in inhibition of microbial growth...
April 2, 2016: Biomedical Instrumentation & Technology
John M Boyce
Experts agree that careful cleaning and disinfection of environmental surfaces are essential elements of effective infection prevention programs. However, traditional manual cleaning and disinfection practices in hospitals are often suboptimal. This is often due in part to a variety of personnel issues that many Environmental Services departments encounter. Failure to follow manufacturer's recommendations for disinfectant use and lack of antimicrobial activity of some disinfectants against healthcare-associated pathogens may also affect the efficacy of disinfection practices...
2016: Antimicrobial Resistance and Infection Control
Egmont Semmler, Wenzel Novak, Wilf Allinson, Darren Wallis, Nigel Wood, Peter Awakowicz, Joachim Wunderlich
UNLABELLED: A new technology to the pharmaceutical field is presented: surface decontamination by plasmas The technology is comparable to established barrier systems like e-beam, volatile hydrogen peroxide, or radiation inactivation of microbiological contaminations. This plasma technology is part of a fully automated and validated syringe filling line at a major pharmaceutical company and is in production operation. Incoming pre-sterilized syringe containers ("tubs") are processed by plasma, solely on the outside, and passed into the aseptic filling isolator upon successful decontamination...
May 2016: PDA Journal of Pharmaceutical Science and Technology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"