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https://www.readbyqxmd.com/read/28644383/use-of-ultrasonication-technology-for-the-increased-production-of-plant-secondary-metabolites
#1
REVIEW
Md Mohidul Hasan, Tufail Bashir, Hanhong Bae
Plant secondary metabolites (PSMs) provide taste, color, odor, and resistance to plants, and they are also used to treat cancer and cardiovascular diseases. Synthesis of PSMs in plants is stimulated in response to different forms of external stress. Use of ultrasonication (US) to clean or decontaminate fruits and vegetables leads to physical stress that finally results in the accumulation of PSMs. US can stimulate accumulation of taxol, ginsenoside saponins, shikonin, and resveratrol, e.g., up to 319-fold increase of resveratrol synthesis has been observed in grape due to US...
June 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28643515/structures-of-degradation-products-and-degradation-pathways-of-aflatoxin-b1-by-high-voltage-atmospheric-cold-plasma-hvacp-treatment
#2
Hu Shi, Bruce R Cooper, Richard L Stroshine, Klein E Ileleji, Kevin Keener
High voltage atmospheric cold plasma (HVACP) is a novel non-thermal decontamination technology that has potential for use in the food industry. In this study, HVACP was applied to treat pure aflatoxin B1 (AFB1) powder on a glass slide. AFB1 was degraded by 76% using a 5 min HVACP treatment in air having 40% relative humidity. The degradation products of AFB1 were separated and their molecular formulas were elucidated using liquid chromatography time of flight mass spectrometry (HPLC-TOF MS). Six main degradation products were observed...
June 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28642862/fabrication-of-cmc-g-pam-superporous-polymer-monoliths-via-eco-friendly-pickering-mipes-for-superior-adsorption-of-methyl-violet-and-methylene-blue
#3
Feng Wang, Yongfeng Zhu, Wenbo Wang, Li Zong, Taotao Lu, Aiqin Wang
A series of superporous carboxymethylcellulose-graft-poly(acrylamide)/palygorskite (CMC-g-PAM/Pal) polymer monoliths presenting interconnected pore structure and excellent adsorption properties were prepared by one-step free-radical grafting polymerization reaction of CMC and acrylamide (AM) in the oil-in-water (O/W) Pickering-medium internal phase emulsions (Pickering-MIPEs) composed of non-toxic edible oil as a dispersion phase and natural Pal nanorods as stabilizers. The effects of Pal dosage, AM dosage, and co-surfactant Tween-20 (T-20) on the pore structures of the monoliths were studied...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28642746/virucidal-activity-of-fogged-chlorine-dioxide-and-hydrogen-peroxide-based-disinfectants-against-human-norovirus-and-its-surrogate-feline-calicivirus-on-hard-to-reach-surfaces
#4
Naim Montazeri, Clyde Manuel, Eric Moorman, Janak R Khatiwada, Leonard L Williams, Lee-Ann Jaykus
Human norovirus (NoV) is the leading cause of foodborne illnesses in the United States. Norovirus is shed in high numbers in the feces and vomitous of infected individuals. Contact surfaces contaminated with bodily fluids harboring infectious virus particles serve as vehicles for pathogen transmission. Environmental stability of NoV and its resistance to many conventional disinfectants necessitate effective inactivation strategies to control the spread of virus. We investigated the efficacy of two commercial disinfectants, hydrogen peroxide (7...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28638595/use-of-90-ethanol-to-decontaminate-stethoscopes-in-resource-limited-settings
#5
Bijendra Raj Raghubanshi, Supriya Sapkota, Arjab Adhikari, Aman Dutta, Utsuk Bhattarai, Rastriyata Bhandari
BACKGROUND: In developing countries like Nepal, 90% ethanol is cheap and is available in most hospitals. The unavailability of isopropyl alcohol (IPA) in these settings led us to compare the efficacy between 90% ethanol and isopropyl alcohol pads in reducing the bacterial contamination of diaphragm of stethoscope. METHODS: A randomized blinded experimental study was carried out to determine the difference between cleaning stethoscopes with 90% ethanol and IPA. Cultures of diaphragm were taken before and after cleaning with one of the cleaning agent...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28636458/contamination-of-firefighter-personal-protective-equipment-and-skin-and-the-effectiveness-of-decontamination-procedures
#6
Kenneth W Fent, Barbara Alexander, Jennifer Roberts, Shirley Robertson, Christine Toennis, Deborah Sammons, Stephen Bertke, Steve Kerber, Denise Smith, Gavin Horn
Firefighters' skin may be exposed to chemicals via permeation/penetration of combustion byproducts through or around personal protective equipment (PPE) or from the cross-transfer of contaminants on PPE to the skin. Additionally, volatile contaminants can evaporate from PPE following a response and be inhaled by firefighters. Using polycyclic aromatic hydrocarbons (PAHs) and volatile organic compounds (VOCs) as respective markers for non-volatile and volatile substances, we investigated the contamination of firefighters' turnout gear and skin following controlled residential fire responses...
June 21, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28630685/effectiveness-of-surface-coatings-containing-silver-ions-in-bacterial-decontamination-in-a-recovery-unit
#7
Rafael Manuel Ortí-Lucas, Julio Muñoz-Miguel
BACKGROUND: HAIs remain a frequent complication for hospitalised patients and pose a challenge that must be tackled by our health systems. METHODS: Quasi-experimental study. In order to determine the antimicrobial effectiveness of surface coating agents containing silver ions (BactiBlock®) the degree of contamination of several surfaces in two ICU wards was compared. The association between application of Bactiblock® and surface contamination was analysed using a relative risk (RR)...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28622352/volunteer-trials-of-a-novel-improvised-dry-decontamination-protocol-for-use-during-mass-casualty-incidents-as-part-of-the-uk-s-initial-operational-response-ior
#8
Richard Amlôt, Holly Carter, Lorna Riddle, Joanne Larner, Robert P Chilcott
Previous studies have demonstrated that rapid evacuation, disrobing and emergency decontamination can enhance the ability of emergency services and acute hospitals to effectively manage chemically-contaminated casualties. The purpose of this human volunteer study was to further optimise such an "Initial Operational Response" by (1) identifying an appropriate method for performing improvised skin decontamination and (2) providing guidance for use by first responders and casualties. The study was performed using two readily available, absorbent materials (paper towels and incontinence pads)...
2017: PloS One
https://www.readbyqxmd.com/read/28619615/evaluation-of-antimicrobial-activity-of-association-of-chlorhexidine-to-photosensitizer-used-in-photodynamic-therapy-in-root-canals-infected-by-enterococcus-faecalis
#9
Matheus Albino Souza, Guilherme Lima, Bianca Pazinatto, Karolina Frick Bischoff, Huriel Scartazzini Palhano, Doglas Cecchin
INTRODUCTION: The aim of the present study was to evaluate, in vitro, the influence of the addition of chlorhexidine to photosensitiser in the antimicrobial activity of photodynamic therapy in root canals infected by Enterococcus faecalis. METHODS: the root canals of 50 single-rooted human extracted teeth were enlarged up to a file F3 of Pro-Taper system, autoclaved, inoculated with Enterococcus faecalis and incubated for 14 days. The samples were divided into five groups (n=10) according to the protocol of decontamination: G1 (control group) - no procedure was performed; G2-photosensitiser (0...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28618392/radiocesium-decontamination-of-a-riverside-in-fukushima-japan
#10
Tatsuhiro Nishikiori, Satoshi Suzuki
Extensive decontamination measures have been implemented in the area affected by the Fukushima Dai-ichi nuclear disaster. Typical decontamination measures, such as removing topsoil of several centimeters in depth, are not suitable for rivers where contaminated sediments have been deposited. A decontamination measure was tested that considered the spatial distribution of radiocesium at the lower part of a tributary of the Abukuma River in Fukushima. The radiocesium distribution in the flood channel was vertically and horizontally highly heterogeneous...
June 12, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28616203/reduced-rate-of-intensive-care-unit-acquired-gram-negative-bacilli-after-removal-of-sinks-and-introduction-of-water-free-patient-care
#11
Joost Hopman, Alma Tostmann, Heiman Wertheim, Maria Bos, Eva Kolwijck, Reinier Akkermans, Patrick Sturm, Andreas Voss, Peter Pickkers, Hans Vd Hoeven
BACKGROUND: Sinks in patient rooms are associated with hospital-acquired infections. The aim of this study was to evaluate the effect of removal of sinks from the Intensive Care Unit (ICU) patient rooms and the introduction of 'water-free' patient care on gram-negative bacilli colonization rates. METHODS: We conducted a 2-year pre/post quasi-experimental study that compared monthly gram-negative bacilli colonization rates pre- and post-intervention using segmented regression analysis of interrupted time series data...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28613818/efficient-removal-of-anionic-radioactive-pollutant-from-water-using-ordered-urea-functionalized-mesoporous-polymeric-nanoparticle
#12
Jian Shen, Wei Chai, Kaixuan Wang, Fang Zhang
A urea-functionalized ordered mesoporous polymeric nanoparticle for removing the perrhenate anion ReO4- as the surrogate of the particularly intractable anion radioactive pollutant TcO4- was demonstrated in the present study. This nanomaterial (denoted as urea-MPN) was produced for the first time by a surfactant-directed urea-phenol-formaldehyde resol oligomers self-assembly protocol under hydrothermal condition. The obtained urea-MPN possessed the uniform nanosized spherical morphology with 3D interconnected ordered cubic mesoporous structure...
June 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28610932/automatic-environmental-disinfection-with-hydrogen-peroxide-and-ion-silver-versus-manual-environmental-disinfection-with-sodium-hypochlorite-a-multicenter-randomized-before-and-after-trial
#13
D Mosci, G W Marmo, L Sciolino, C Zaccaro, R Antonellini, L Accogli, T Lazzarotto, M Mongardi, M P Landini
AIMS: 1. Compare the effectiveness of an automated disinfection system with hydrogen peroxide <8% and silver ion versus a manual method with 0.5% sodium hypochlorite solution to evaluate the reduction of microbial mesophilic contamination and Clostridium difficile (CD) presence; 2. Evaluate the organizational impact of these two technologies in terms of time required for the process. METHODS: A randomized multicenter trial performed in four public and private health facilities in the Emilia-Romagna Region, in different wards including medicine, orthopaedics, long-term care, recovery and functional rehabilitation, which were previously occupied by patients with Clostridium difficile Infection (CDI)...
June 10, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28607344/surviving-sepsis-campaign-guidelines-2016-omission-of-selective-decontamination-of-the-digestive-tract-deprives-patients-of-a-level-2b-therapy
#14
Luciano Silvestri, Hendrick K van Saene, Johannes H Rommes, Andy J Petros, Miguel A de la Cal, Julian F Bion
No abstract text is available yet for this article.
June 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28605844/combination-of-aquatic-species-and-safeners-improves-the-remediation-of-copper-polluted-water
#15
Ivan Panfili, Maria Luce Bartucca, Eleonora Ballerini, Daniele Del Buono
In the last decades, many anthropogenic activities have resulted in heavy metal contamination of freshwaters and surrounding environments. This poses serious threats to human health. Phytoremediation is a cost-effective technology which is useful for remediating polluted soils and water. Recently, the use of aquatic free-floating plants has been proposed to remediate polluted water. In this context, a study on the capacity of two aquatic plants, Lemna minor (duckweed) and Salvinia auriculata (salvinia), to remediate Cu(+2) (Cu) polluted water was carried out...
June 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28605496/validation-of-microbiological-testing-in-cardiovascular-tissue-banks-results-of-a-quality-round-trial
#16
Theo M M H de By, Carl McDonald, Susanne Süßner, Jill Davies, Wee Ling Heng, Ramadan Jashari, Ad J J C Bogers, Pieter Petit
OBJECTIVES: Surgeons needing human cardiovascular tissue for implantation in their patients are confronted with cardiovascular tissue banks that use different methods to identify and decontaminate micro-organisms. To elucidate these differences, we compared the quality of processing methods in 20 tissue banks and 1 reference laboratory. We did this to validate the results for accepting or rejecting tissue. We included the decontamination methods used and the influence of antibiotic cocktails and residues with results and controls...
June 12, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28601745/synthesis-of-poly-diallyldimethylammonium-capped-copper-hexacyanoferrate-cuhcf-nanoparticles-an-efficient-stabiliser-for-pickering-emulsions
#17
Martin Mayer, Dmytro Dedovets, Yannick Guari, Joulia Larionova, Jérôme Long, Jérémy Causse
Poly(diallyldimethylammonium chloride) (PDDA) capped copper hexacyanoferrate nanoparticles (CuHCF NPs) with the controlled size are prepared following a precipitation method. While PDDA and CuHCF are not active at the cyclohexane/water interface, PDDA capped CuHCF NPs present synergistic property permitting them to stabilise oil-in-water emulsions for weeks. These latter can be considered as promising precursors for the development of new porous materials considering the fact that the NPs present some interests in the field of nuclear decontamination...
June 3, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28601555/comparison-of-skin-decontamination-efficacy-of-commercial-decontamination-products-following-exposure-to-vx-on-human-skin
#18
L Thors, M Koch, E Wigenstam, B Koch, L Hägglund, A Bucht
The decontamination efficacy of four commercially available skin decontamination products following exposure to the nerve agent VX was evaluated in vitro utilizing a diffusion cell and dermatomed human skin. The products included were Reactive Skin Decontamination Lotion (RSDL), the Swedish decontamination powder 104 (PS104), the absorbent Fuller's Earth and the aqueous solution alldecontMED. In addition, various decontamination procedures were assessed to further investigate important mechanisms involved in the specific products, e...
June 7, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28600332/contaminated-fingers-a-potential-cause-of-chlamydia-trachomatis-positive-urine-specimens
#19
Philip M Giffard, Rachael A Lilliebridge, Judith Wilson, Gerald Murray, Samuel Phillips, Sepehr N Tabrizi, Suzanne M Garland, Louise Martin, Gurmeet Singh, Steven Y C Tong, Deborah C Holt, Patiyan Andersson
OBJECTIVES: The detection of an STI agent in a urogenital tract (UGT) specimen from a young child is regarded as being indicative of sexual abuse. However, the probabilities of contamination events that could conceivably lead to STI positive specimens in the absence of sexual contact are unclear. The objective was to estimate the potential for fingers that have come in contact with Chlamydia trachomatis-positive urine to detectably contaminate C. trachomatis-negative urine. METHODS: The study design was based on self-experimentation...
June 9, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28598215/enhanced-atrazine-removal-by-hydrophyte-bacterium-associations-and-in-vitro-screening-of-the-isolates-for-their-plant-growth-promoting-potential
#20
Anina James, D K Singh, P J Khankhane
Emergent hydrophytes Acorus calamus, Typha latifolia and Phragmites karka and epiphytic root bacteria isolated from their rhizoplanes were exposed to atrazine (5 mg l(-1) and 10 mg l(-1)) individually and in plant‒bacterium combination for 15 days hydroponically. It was observed that A. calamus‒Pseudomonas sp. strain ACB combination was best in decontamination, showing 91% and 87% removal of 5 mg l(-1) and 10 mg l(-1) atrazine. Plant‒bacterium association led to significant increase in atrazine decontamination as compared to decontamination by either plant or bacterium alone indicating synergistic action of the hydrophytes and isolates which led to enhanced atrazine removal...
June 9, 2017: International Journal of Phytoremediation
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