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https://www.readbyqxmd.com/read/29220202/comparison-of-uv-c-and-pulsed-uv-light-treatments-for-reduction-of-salmonella-listeria-monocytogenes-and-enterohemorrhagic-escherichia-coli-on-eggs
#1
Askild L Holck, Kristian H Liland, Signe M Drømtorp, Mats Carlehög, Anette McLEOD
Ten percent of all strong-evidence foodborne outbreaks in the European Union are caused by Salmonella related to eggs and egg products. UV light may be used to decontaminate egg surfaces and reduce the risk of human salmonellosis infections. The efficiency of continuous UV-C (254 nm) and pulsed UV light for reducing the viability of Salmonella Enteritidis, Listeria monocytogenes, and enterohemorrhagic Escherichia coli on eggs was thoroughly compared. Bacterial cells were exposed to UV-C light at fluences from 0...
January 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29190508/evaluation-of-sediment-and-137cs-redistribution-in-the-oginosawa-river-catchment-near-the-fukushima-dai-ichi-nuclear-power-plant-using-integrated-watershed-modeling
#2
Kazuyuki Sakuma, Alex Malins, Hironori Funaki, Hiroshi Kurikami, Tadafumi Niizato, Takahiro Nakanishi, Koji Mori, Kazuhiro Tada, Takamaru Kobayashi, Akihiro Kitamura, Masaaki Hosomi
The Oginosawa River catchment lies 15 km south-west of the Fukushima Dai-ichi nuclear plant and covers 7.7 km2. Parts of the catchment were decontaminated between fall 2012 and March 2014 in preparation for the return of the evacuated population. The General-purpose Terrestrial Fluid-flow Simulator (GETFLOWS) code was used to study sediment and 137Cs redistribution within the catchment, including the effect of decontamination on redistribution. Fine resolution grid cells were used to model local features of the catchment, such as paddy fields adjacent to the Oginosawa River...
November 27, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29178762/adverse-effects-of-salivary-contamination-for-adhesives-in-restorative-dentistry-a-literature-review
#3
REVIEW
Pooja Nair, Reinhard Hickel, Nicoleta Ilie
PURPOSE: To review and critically analyze the literature concerning the influence of salivary contamination on the bond quality of adhesives used in restorative materials by comparing and contrasting the different adhesive materials. METHODS: A detailed search on PUBMED, Cochrane Library, Google Scholar and Web of Science was carried out to identify publications on salivary contamination and dental adhesive materials, from 1990-2017 (March) which resulted in a total of 6,202 web-identified publications...
June 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29154531/study-of-graphene-oxide-structural-features-for-catalytic-antibacterial-gas-sensing-and-metals-decontamination-environmental-applications
#4
Shamaila Sajjad, Sajjad Ahmed Khan Leghari, Anum Iqbal
This study represents a comprehensive review about the structural features of graphene oxide (GO) and its significance in environmental applications. Two Dimensional (2D) GO is tremendously focused in advanced carbon based nanomaterial for environmental applications due to its tunable physicochemical characteristics. Herein, we report foundational structural models of GO and explore the chemical bonding of oxygen moieties with graphite basal plane using various characterization tools. Moreover, the impact of these oxygen moieties and morphology of GO for the environmental applications such as removal of metal ions, catalytic, antibacterial and gas sensing abilities has here been critically reviewed for the first time...
November 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29149625/the-effects-of-pre-and-post-slaughter-spray-application-with-organic-acids-on-microbial-population-reductions-on-beef-carcasses
#5
Hoa Van Ba, Hyun-Woo Seo, Seong Pil-Nam, Yoon-Seok Kim, Beom Young Park, Sung-Sil Moon, Se-Ju Kang, Yong-Min Choi, Jin-Hyoung Kim
As an attempt to control bacterial cross-contamination of beef carcasses, in the present investigation acetic acid and lactic acid (3% v/v) were used for bacterial decontamination. For the decontamination, cows were sprayed with each above acid at two different stages; (i) on live animal's hides, (ii) on carcass surfaces immediately after slaughter. Microbiological samples were taken on different hide areas of animals before spraying and on carcass surfaces at 24h after spraying. Meat quality traits were also analyzed on the sprayed animals...
November 6, 2017: Meat Science
https://www.readbyqxmd.com/read/29143704/identification-of-clostridium-difficile-reservoirs-in-the-patient-environment-and-efficacy-of-aerial-hydrogen-peroxide-decontamination
#6
Samuel Yui, Shanom Ali, Monika Muzslay, Annette Jeanes, A Peter R Wilson
OBJECTIVE To identify, using a novel enhanced method of recovery, environmental sites where spores of Clostridium difficile persist despite cleaning and hydrogen peroxide aerial decontamination. DESIGN Cohort study. SETTING Tertiary referral center teaching hospital. METHODS In total, 16 sites representing high-frequency contact or difficult-to-clean surfaces in a single-isolation room or bed area in patient bed bays were sampled before and after terminal or hydrogen peroxide disinfection using a sponge swab...
November 16, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29140375/plasma-of-argon-increases-cell-attachment-and-bacterial-decontamination-on-different-implant-surfaces
#7
Luigi Canullo, Tullio Genova, Hom-Lay Wang, Stefano Carossa, Federico Mussano
PURPOSE: This in vitro study tested the effects of argon atmospheric pressure dielectric barrier discharge (APDBD) on different implant surfaces with regard to physical changes, bacterial decontamination, and osteoblast adhesion. MATERIALS AND METHODS: Seven hundred twenty disks with three different surface topographies-machined (MAC), titanium plasma-sprayed (TPS), and zirconia-blasted and acid-etched (ZRT)-were tested in this experiment. Bacterial adhesion tests were performed repeatedly on a simplified biofilm of Streptococcus mitis...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29114225/application-of-activated-carbon-derived-from-seed-shells-of-jatropha-curcas-for-decontamination-of-zearalenone-mycotoxin
#8
Naveen K Kalagatur, Kumarvel Karthick, Joseph A Allen, Oriparambil Sivaraman Nirmal Ghosh, Siddaiah Chandranayaka, Vijai K Gupta, Kadirvelu Krishna, Venkataramana Mudili
In the present study, activated carbon (AC) was derived from seed shells of Jatropha curcas and applied to decontaminate the zearalenone (ZEA) mycotoxin. The AC of J. curcas (ACJC) was prepared by ZnCl2 chemical activation method and its crystalline structure was determined by X-ray diffraction analysis. The crystalline graphitic nature of ACJC was confirmed from the Raman spectroscopy. Scanning electron microscope showed the porous surface morphology of the ACJC surface with high pore density and presence of elemental carbon was identified from the energy dispersive X-ray analysis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29112384/efficient-capture-and-effective-sensing-of-cr2o7-2-from-water-using-a-zirconium-metal-organic-framework
#9
Zu-Jin Lin, He-Qi Zheng, Huan-Yu Zheng, Li-Ping Lin, Qin Xin, Rong Cao
Highly efficient decontamination of heavily toxic Cr2O7(2-) from water remains a serious task for public health and ecosystem protection. An easily regenerative and reused sorbent with suitable porosity may address this task. Herein, a series of water-stable and ecofriendly metal-organic frameworks (MOFs) with large surface areas were assessed for their ability to adsorb and separate Cr2O7(2-) from aqueous solutions. Among these tested MOFs, NU-1000 shows an extraordinary capability to efficiently capture (within 3 min) Cr2O7(2-) with a sorption capacity of up to 76...
November 7, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29071245/effect-of-a-commercial-steam-vacuuming-treatment-implemented-after-slaughtering-for-the-decontamination-of-cattle-carcasses
#10
Mirjam Hochreutener, Claudio Zweifel, Sabrina Corti, Roger Stephan
To assess the antimicrobial effect of a commercial steam-vacuuming system newly implemented after slaughtering, 105 cattle carcasses were examined for total viable counts (TVC) at four different areas. Before steam vacuuming, mean TVC of the excision samples were comparable at the perineal area and brisket (3.0-3.1 log CFU cm(-2)) or the hind leg and shoulder (2.6-2.7 log CFU cm(-2)). Steam vacuuming reduced mean TVC by 0.9, 0.7, 0.6, and 0.4 log CFU cm(-2) at the perineal area, hind leg, shoulder, and brisket, respectively...
August 16, 2017: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/29023806/the-percutaneous-toxicokinetics-of-vx-in-a-damaged-skin-porcine-model-and-the-evaluation-of-woundstat%C3%A2-as-a-topical-decontaminant
#11
Helen Lydon, Charlotte Hall, Hazem Matar, Christopher Dalton, J Kevin Chipman, John S Graham, Robert P Chilcott
This study used a damaged skin, porcine model to evaluate the in vivo efficacy of WoundStat™ for the decontamination of superficial, nerve agent-contaminated wounds. Anaesthetized animals were randomly assigned to either control (n = 7), no decontamination (n = 12) or WoundStat™ (n = 12) treatment groups. Pigs were exposed to a 5× LD50 dose of neat, radiolabelled S-[2-(diisopropylamino)ethyl]-O-ethyl methyl-phosphonothioate (VX; or equivalent volume of sterile saline for the control group) via an area of superficially damaged skin on the ear...
October 10, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29022219/photoreduction-of-cr-vi-in-water-using-bivo4-fe3o4-nano-photocatalyst-under-visible-light-irradiation
#12
Tingling Ke, Hongguang Guo, Yongli Zhang, Yang Liu
The residuals of hexavalent chromium in the aquatic environment have raised much concern for water decontamination. In this study, BiVO4-Fe3O4 was synthesized using a solvothermal method and adopted as a photoreduction catalyst to removal of Cr(VI) in water under visible light irradiation. The physical and chemical properties of BiVO4-Fe3O4 were characterized by UV-vis-DRS, SEM, XRD, FTIR, and BET. The results demonstrated that the band gap for the obtained material is 1.74 eV with an average size of 15 nm and a specific surface area of 55...
October 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28980459/incorporating-germination-induction-into-decontamination-strategies-for-bacterial-spores
#13
REVIEW
Lara J Kohler, Avery V Quirk, Susan L Welkos, Christopher K Cote
Bacterial spores resist environmental extremes and protect key spore macromolecules until more supportive conditions arise. Spores germinate upon sensing specific molecules, such as nutrients. Germination is regulated by specialized mechanisms, such as structural features of the spore that limit contact with germinants and enzymes that regulate germination. Importantly, germination renders spores more susceptible to inactivating processes such as heat, desiccation, and ultraviolet radiation, to which they are normally refractory...
October 4, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28970226/the-potentiating-effect-of-mandelate-and-lactate-on-chemically-induced-germination-in-members-of-bacillus-cereus-sensu-lato
#14
Alistair H Bishop
Endospores of the genus Bacillus can be triggered to germinate by a limited number of chemicals. Mandelate had a powerful, additive effect on the level and rate of germination produced in non-heat shocked spores of Bacillus anthracis Sterne, Bacillus cereus and Bacillus thuringiensis when combined with L-alanine and inosine. Mandelate had no germinant effect on its own but was active with these germinants in a dose-dependent manner at concentrations above 0.5 mM. The maximum rate and extent of germination was produced in B...
September 29, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28953347/highly-potent-antibacterial-organometallic-peptide-conjugates
#15
Bauke Albada, Nils Metzler-Nolte
Resistance of pathogenic bacteria against currently marketed antibiotics is again increasing. To meet the societal need for effective cures, scientists are faced with the challenge of developing more potent but equally bacteria-specific drugs. Currently, most efforts are directed toward the modification of existing antibiotics, but ideally, compounds with a new mode of action are required. In this Account, we detail our findings in the area of novel metal-based antibiotics. Our strategy is based on the modification of simple antimicrobial peptides (AMPs) with organometallic agents, resulting in organometallic AMPs (OM-AMPs)...
October 17, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28939316/controlling-a-possible-outbreak-of-candida-auris-infection-lessons-learnt-from-multiple-interventions
#16
M Biswal, S M Rudramurthy, N Jain, A S Shamanth, D Sharma, K Jain, L N Yaddanapudi, A Chakrabarti
BACKGROUND: Multidrug-resistant Candida auris infection has been reported from five continents in recent years. The prevalence of C. auris invasive infection has been estimated at 5.3% for intensive-care-acquired candidaemia in India. The transmission of the organism between the patients and from environment to patients is rapid. AIM: To understand the intra-hospital dynamics of C. auris transmission and to determine the possible interventions to prevent its spread...
December 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28938866/the-interpretation-of-hair-analysis-for-drugs-and-drug-metabolites
#17
Eva Cuypers, Robert J Flanagan
INTRODUCTION: Head hair analysis for drugs and drug metabolites has been used widely with the aim of detecting exposure in the weeks or months prior to sample collection. However, inappropriate interpretation of results has likely led to serious miscarriages of justice, especially in child custody cases. OBJECTIVE: The aim of this review is to assess critically what can, and perhaps more importantly, what cannot be claimed as regards the interpretation of hair test results in a given set of circumstances in order to inform future testing...
September 22, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28932363/cadmium-toxicity-and-treatment-an-update
#18
REVIEW
Mehrdad Rafati Rahimzadeh, Mehravar Rafati Rahimzadeh, Sohrab Kazemi, Ali-Akbar Moghadamnia
Cadmium poisoning has been reported from many parts of the world. It is one of the global health problems that affect many organs and in some cases it can cause deaths annually. Long-term exposure to cadmium through air, water, soil, and food leads to cancer and organ system toxicity such as skeletal, urinary, reproductive, cardiovascular, central and peripheral nervous, and respiratory systems. Cadmium levels can be measured in the blood, urine, hair, nail and saliva samples. Patients with cadmium toxicity need gastrointestinal tract irrigation, supportive care, and chemical decontamination traditional-based chelation therapy with appropriate new chelating agents and nanoparticle-based antidotes...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28923588/development-of-silver-nanoparticle-doped-adsorbents-for-the-separation-and-recovery-of-radioactive-iodine-from-alkaline-solutions
#19
Taewoon Kim, Seung-Kon Lee, Suseung Lee, Jun Sig Lee, Sang Wook Kim
Removing radioactive iodine from solutions containing fission products is essential for nuclear facility decontamination, radioactive waste treatment, and medical isotope production. For example, the production of high-purity fission (99)Mo by irradiation of (235)U with neutrons involves the removal of iodine from an alkaline solution of the irradiated target (which contains numerous fission products and a large quantity of aluminate ions) using silver-based materials or anion-exchange resins. To be practically applicable, the utilized iodine adsorbent should exhibit a decontamination factor of at least 200...
November 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28914834/-plasma-management-in-complex-treatment-of-late-inflammatory-complications-after-injection-contour-plasty-with-polyacrylamide-gel
#20
A M Shulutko, E G Osmanov, I V Novikova, S L Chochiya, V P Seredin, A D Macharadze
AIM: To improve the results of treatment of late inflammatory complications after injection contour plasty with polyacrylamide gel. MATERIAL AND METHODS: The authors analyze treatment of 21 patients with late septic complications of body contour plasty with polyacrylamide gel (PAGE) for the period 2010-2015. Mean age of women was 47.4 years. Time after primary intervention was 10-22 years. The depth of soft tissue lesion corresponded to II-III grade by D. Ahrenholz classification (1991), length - from 67 to 180 cm2...
2017: Khirurgiia
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