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https://www.readbyqxmd.com/read/27915269/effect-of-ph-on-the-interaction-of-volatile-compounds-with-the-myofibrillar-proteins-of-duck-meat
#1
Q L Yang, X W Lou, Y Wang, D D Pan, Y Y Sun, J X Cao
In order to clarify the influence of curing agents on the flavor of duck, the effect of pH on the surface hydrophobicity, secondary structures, and adsorption capacity of myofibrillar proteins to alcohols, aldehydes, ketones, and esters was assessed using Raman spectroscopy, gas chromatography-mass spectrometer, and other methodologies. The hydrophobicity decreased as pH increased from 5.0 to 8.0; β-turn turned into α-helix and random coil as pH increased from 5.0 to 7.0, while α-helix and random coil turned into β-sheet and β-turn as pH increased from 7...
December 3, 2016: Poultry Science
https://www.readbyqxmd.com/read/27912980/lack-of-sustained-efficacy-for-alcohol-based-surgical-hand-rubs-containing-residual-active-ingredients-according-to-en-12791
#2
REVIEW
G Kampf, A Kramer, M Suchomel
The World Health Organization recommends the use of hand rubs with 'sustained activity' for surgical hand preparation. This review aims to verify whether any of the alcohol-based hand rubs containing non-volatile 'active ingredients' such as chlorhexidine digluconate (CHG), mecetronium ethylsulphate (MES), or ortho-phenylphenol (OPP) provides such sustained efficacy for surgical hand disinfection. Literature was searched to find studies according to EN 12791. Published data sets were analysed to verify whether any of the formulations has a superior efficacy (P<0...
November 12, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27905512/plant-phenolic-volatiles-inhibit-quorum-sensing-in-pectobacteria-and-reduce-their-virulence-by-potential-binding-to-expi-and-expr-proteins
#3
Janak Raj Joshi, Netaly Khazanov, Hanoch Senderowitz, Saul Burdman, Alexander Lipsky, Iris Yedidia
Quorum sensing (QS) is a population density-dependent regulatory system in bacteria that couples gene expression to cell density through accumulation of diffusible signaling molecules. Pectobacteria are causal agents of soft rot disease in a range of economically important crops. They rely on QS to coordinate their main virulence factor, production of plant cell wall degrading enzymes (PCWDEs). Plants have evolved an array of antimicrobial compounds to anticipate and cope with pathogens, of which essential oils (EOs) are widely recognized...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27896927/a-retrospective-review-of-anesthesia-and-perioperative-care-in-children-with-medium-chain-acyl-coa-dehydrogenase-deficiency
#4
Claire Allen, Russell Perkins, Bernd Schwahn
BACKGROUND: Medium-chain acyl-CoA dehydrogenase deficiency is the most common genetically determined disorder of mitochondrial fatty acid oxidation. Decompensation can result in hypoglycemia, seizures, coma, and death but may be prevented by ensuring glycogen stores do not become depleted. Perioperative care is of interest as surgery, fasting, and infection may all trigger decompensation and the safety of anesthetic agents has been questioned. Current guidelines from the British Inherited Metabolic Disease Group advise on administering fluid containing 10% glucose during the perioperative period...
November 29, 2016: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/27896581/secondary-metabolites-of-endophytic-xylaria-species-with-potential-applications-in-medicine-and-agriculture
#5
REVIEW
Martha Lydia Macías-Rubalcava, Rosa Elvira Sánchez-Fernández
Fungal endophytes are important sources of bioactive secondary metabolites. The genus Xylaria Hill (ex Schrank, 1789, Xylariaceae) comprises various endophytic species associated to both vascular and non vascular plants. The secondary metabolites produced by Xylaria species include a variety of volatile and non-volatile compounds. Examples of the former are sesquiterpenoids, esters, and alcohols, among others; and of the latter we find terpenoids, cytochalasins, mellein, alkaloids, polyketides, and aromatic compounds...
January 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27895665/sugammadex-enhanced-neuronal-apoptosis-following-neonatal-sevoflurane-exposure-in-mice
#6
Maiko Satomoto, Zhongliang Sun, Yushi U Adachi, Koshi Makita
In rodents, neonatal sevoflurane exposure induces neonatal apoptosis in the brain and results in learning deficits. Sugammadex is a new selective neuromuscular blockade (NMB) binding agent that anesthesiologists can use to achieve immediate reversal of an NMB with few side effects. Given its molecular weight of 2178, sugammadex is thought to be unable to pass through the blood brain barrier (BBB). Volatile anesthetics can influence BBB opening and integrity. Therefore, we investigated whether the intraperitoneal administration of sugammadex could exacerbate neuronal damage following neonatal 2% sevoflurane exposure via changes in BBB integrity...
2016: Anesthesiology Research and Practice
https://www.readbyqxmd.com/read/27892815/monitoring-trihalomethanes-and-nitrogenous-disinfection-by-products-in-blending-desalinated-waters-using-solid%C3%A2-phase-microextraction-and-gas-chromatography
#7
Providencia González-Hernández, Manuel Hernández-Padrón, Verónica Pino, Ana M Afonso, Juan H Ayala
A simple and efficient method has been developed for the extraction and determination of sixteen common volatile halogenated disinfection by-products (DBPs) in blending desalinated waters, using headspace solid-phase microextraction and gas chromatography with flame-ionization detection (HS-SPME/GC-FID). The DBPs determined included 4 trihalomethanes, 6 haloacetonitriles and 6 halonitromethanes. After the optimization using factorial designs of the HS-SPME parameters (optimum: carboxen/polydimethylsiloxane (CAR/PDMS) fiber, extraction time of 60 min at 30 °C, pH 7, addition of 40% (w/v) of sodium chloride, and desorption time of 2 min at 250 °C), quantification limits ranged from 3...
November 28, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27872630/control-of-wilt-and-rot-pathogens-of-tomato-by-antagonistic-pink-pigmented-facultative-methylotrophic-delftia-lacustris-and-bacillus-spp
#8
Veeranan Janahiraman, Rangasamy Anandham, Soon W Kwon, Subbiah Sundaram, Veeranan Karthik Pandi, Ramasamy Krishnamoorthy, Kiyoon Kim, Sandipan Samaddar, Tongmin Sa
The studies on the biocontrol potential of pink pigmented facultative methylotrophic (PPFM) bacteria other than the genus Methylobacterium are scarce. In the present study, we report three facultative methylotrophic isolates; PPO-1, PPT-1, and PPB-1, respectively, identified as Delftia lacustris, Bacillus subtilis, and Bacillus cereus by 16S rRNA gene sequence analysis. Hemolytic activity was tested to investigate the potential pathogenicity of isolates to plants and humans, the results indicates that the isolates PPO-1, PPT-1, and PPB-1 are not pathogenic strains...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27871537/-1-8-million-and-counting-how-volatile-agent-education-has-decreased-our-spending-1000-per-day
#9
Scott A Miller, Carol A Aschenbrenner, Justin R Traunero, Loren A Bauman, Samuel S Lobell, Jeffrey S Kelly, John E Reynolds
STUDY OBJECTIVE: Volatile anesthetic agents comprise a substantial portion of every hospital's pharmacy budget. Challenged with an initiative to lower anesthetic drug expenditures, we developed an education-based intervention focused on reducing volatile anesthetic costs while preserving access to all available volatile anesthetics. When postintervention evaluation demonstrated a dramatic year-over-year reduction in volatile agent acquisition costs, we undertook a retrospective analysis of volatile anesthetic purchasing data using time series analysis to determine the impact of our educational initiative...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27869443/-post-mortem-investigation-of-alveolar-air-in-forensic-practice
#10
Miroslav Bauer, Jiřina Bauerová, Ján Šikuta, Jozef Šidlo
Exhaled air from biological materials is used for the purpose of toxicologico-chemical analysis particularly in detecting of alcohol influence in traffic or within a working process. Similarly, still a more and more actual requirement seems to be a necessity to analyse alveolar air from necroptic material. This necessity is emphasised not only by the fact, that inhalant intoxications in the form of poisoning represent their substantial part, but also a demand to evidence exactly a noxious agent both specifically and also in at least two materials...
2016: Soudní Lékarství
https://www.readbyqxmd.com/read/27852533/a-simple-cheap-and-reliable-method-for-control-of-4-ethylphenol-and-4-ethylguaiacol-in-red-wines-screening-of-fining-agents-for-reducing-volatile-phenols-levels-in-red-wines
#11
Juliana Milheiro, Luís Filipe-Ribeiro, Fernanda Cosme, Fernando M Nunes
Brettanomyces/Dekkera produces 4-ethylphenol (4-EP) and 4-ethylguaiacol (4-EG) from hydroxycinnamic acids that affect the wine aroma and overall quality. A simple, cheap, fast and reliable quantitation method is needed for routine quality control of wines. In this work a simple method based on one simple liquid-liquid extraction with pentane/diethyl ether (2:1) and analysis by GC-MS allow to obtain very good recoveries (98-102%) and low quantification limits (24 and 11μg/L for 4-EP and 4-EG, respectively), well below the sensory threshold for these volatile phenols and with an adequate measurement uncertainty: 70, 1...
October 27, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27851747/floral-scent-mimicry-and-vector-pathogen-associations-in-a-pseudoflower-inducing-plant-pathogen-system
#12
Scott H McArt, Timothy D Miles, Cesar Rodriguez-Saona, Annemiek Schilder, Lynn S Adler, Matthew J Grieshop
Several fungal plant pathogens induce 'pseudoflowers' on their hosts to facilitate insect-mediated transmission of gametes and spores. When spores must be transmitted to host flowers to complete the fungal life cycle, we predict that pseudoflowers should evolve traits that mimic flowers and attract the most effective vectors in the flower-visiting community. We quantified insect visitation to flowers, healthy leaves and leaves infected with Monilinia vaccinii-corymbosi (Mvc), the causative agent of mummy berry disease of blueberry...
2016: PloS One
https://www.readbyqxmd.com/read/27851525/1890-complications-with-the-administration-of-a-volatile-anesthetic-agent-for-asthma-in-the-picu
#13
Brittany Shutes, W Joshua Frazier, Todd Karsies, Joseph Tobias
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27844299/comparison-of-pneumotachography-and-anemometery-for-flow-measurement-during-mechanical-ventilation-with-volatile-anesthetics
#14
Jarred R Mondoñedo, Jacob Herrmann, John S McNeil, David W Kaczka
Volatile anesthetics alter the physical properties of inhaled gases, such as density and viscosity. We hypothesized that the use of these agents during mechanical ventilation would yield systematic biases in estimates of flow ([Formula: see text]) and tidal volume (V T) for two commonly used flowmeters: the pneumotachograph (PNT), which measures a differential pressure across a calibrated resistive element, and the hot-wire anemometer (HWA), which operates based on convective heat transfer from a current-carrying wire to a flowing gas...
November 14, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27834828/aroma-release-in-wine-using-co-immobilized-enzyme-aggregates
#15
Katherine Ahumada, Ana Martínez-Gil, Yerko Moreno-Simunovic, Andrés Illanes, Lorena Wilson
Aroma is a remarkable factor of quality and consumer preference in wine, representing a distinctive feature of the product. Most aromatic compounds in varietals are in the form of glycosidic precursors, which are constituted by a volatile aglycone moiety linked to a glucose residue by an O-glycosidic bond; glucose is often linked to another sugar (arabinose, rhamnose or apiose). The use of soluble β-glycosidases for aroma liberation implies the addition of a precipitating agent to remove it from the product and precludes its reuse after one batch...
November 8, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27828800/safety-and-efficacy-of-volatile-anesthetic-agents-compared-with-standard-intravenous-midazolam-propofol-sedation-in-ventilated-critical-care-patients-a-meta-analysis-and-systematic-review-of-prospective-trials
#16
Angela Jerath, Jonathan Panckhurst, Matteo Parotto, Nicholas Lightfoot, Marcin Wasowicz, Niall D Ferguson, Andrew Steel, W Scott Beattie
BACKGROUND: Inhalation agents are being used in place of intravenous agents to provide sedation in some intensive care units. We performed a systematic review and meta-analysis of prospective randomized controlled trials, which compared the use of volatile agents versus intravenous midazolam or propofol in critical care units. METHODS: A search was conducted using MEDLINE (1946-2015), EMBASE (1947-2015), Web of Science index (1900-2015), and Cochrane Central Register of Controlled Trials...
November 8, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27812619/exopolysaccharide-dispelled-by-calcium-hydroxide-with-volatile-vehicles-related-to-bactericidal-effect-for-root-canal-medication
#17
Lei Lei, Meiying Shao, Yan Yang, Mengying Mao, Yingming Yang, Tao Hu
Objective: Enterococcus faecalis is the dominant microbial species responsible for persistent apical periodontitis with ability to deeply penetrate into the dentin. Exopolysaccharides (EPS) contribute to the pathogenicity and antibiotic resistance of E. faecalis. Our aim was to investigate the antimicrobial activity of calcium hydroxide (CH), camphorated parachlorophenol (CMCP), and chlorhexidine (CHX) against E. faecalis in dentinal tubules. Material and Methods: Decoronated single-canal human teeth and semicylindrical dentin blocks were incubated with E...
September 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/27810409/a-novel-anti-pollution-filter-for-volatile-agents-during-cardiopulmonary-bypass-preliminary-tests
#18
Caetano Nigro Neto, Giovanni Landoni, Maria Angela Tardelli
OBJECTIVE: Concerns regarding pollution of the operating room by volatile anesthetics and effects on atmospheric ozone depletion exist. Volatile agents commonly are used during cardiopulmonary bypass to provide anesthesia independent of any supposed myocardial protective effects. The authors' aim was to create and to assess the performance of a prototype filter for volatile agents to be connected to the cardiopulmonary bypass circuit to avoid the emission of volatile agents to the operating room, and also to the environment without causing damage to the membrane oxygenator...
August 10, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27800510/sevoflurane-mitigates-shedding-of-hyaluronan-from-the-coronary-endothelium-also-during-ischemia-reperfusion-an-ex-vivo-animal-study
#19
Congcong Chen, Daniel Chappell, Thorsten Annecke, Peter Conzen, Matthias Jacob, Ulrich Welsch, Bernhard Zwissler, Bernhard F Becker
Glycosaminoglycan hyaluronan (HA), a major constituent of the endothelial glycocalyx, helps to maintain vascular integrity. Preconditioning the heart with volatile anesthetic agents protects against ischemia/reperfusion injury. We investigated a possible protective effect of sevoflurane on the glycocalyx, especially on HA. The effect of pre-ischemic treatment with sevoflurane (15 minutes at 2% vol/vol gas) on shedding of HA was evaluated in 28 isolated, beating guinea pig hearts, subjected to warm ischemia (20 minutes at 37°C) followed by reperfusion (40 minutes), half with and half without preconditioning by sevoflurane...
2016: Hypoxia
https://www.readbyqxmd.com/read/27790552/comparative-evaluation-of-volatile-anaesthetic-agents-for-attenuation-of-venous-cannulation-pain-a-prospective-randomized-controlled-study
#20
Vinit K Srivastava, Pravin K Das, Sujeet Ks Gautam, Parineeta Jaisawal, Venkat N Kadiyala, Sonal Rambhad
INTRODUCTION: Topical application of volatile anaesthetic agents has been found to attenuate the response to a mechanical stimulus; however, this effect of volatile anaesthetic on perception of pain during venous cannulation is not known. AIM: To compare the efficacy of topically administered volatile anaesthetic agents for attenuating venous cannulation pain. MATERIALS AND METHODS: This prospective, randomized, placebo controlled and double blind study was conducted on 120 patients, aged 20-60years...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
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