journal
MENU ▼
Read by QxMD icon Read
search

Biofouling

journal
https://www.readbyqxmd.com/read/28426246/biofilm-characteristics-and-evaluation-of-the-sanitation-procedures-of-thermophilic-aeribacillus-pallidus-e334-biofilms
#1
Tugba Kilic, Basar Karaca, Beste Piril Ozel, Birgul Ozcan, Cumhur Cokmus, Arzu Coleri Cihan
The ability of Aeribacillus pallidus E334 to produce pellicle and form a biofilm was studied. Optimal biofilm formation occurred at 60 °C, pH 7.5 and 1.5% NaCl. Extra polymeric substances (EPS) were composed of proteins and eDNA (21.4 kb). E334 formed biofilm on many surfaces, but mostly preferred polypropylene and glass. Using CLSM analysis, the network-like structure of the EPS was observed. The A. pallidus biofilm had a novel eDNA content. DNaseI susceptibility (86.8% removal) of eDNA revealed its importance in mature biofilms, but the purified eDNA was resistant to DNaseI, probably due to its extended folding outside the matrix...
April 20, 2017: Biofouling
https://www.readbyqxmd.com/read/28403635/one-domain-approach-for-studying-multiphase-transport-phenomena-in-biofilm-growing-systems
#2
Juan Manuel Oliveros-Muñoz, Martha Patricia Calderón-Alvarado, Gloria María Martínez-González, José Luis Navarrete-Bolaños, Hugo Jiménez-Islas
The one-domain approach (ODA) was used as an alternative to solve fluid-biofilm interfacial behavior in a 2-D model for diffusion-reaction-convection coupled with prediction of irregular growth of biofilms via a cellular automaton strategy. The simulations exhibited errors of <7% compared with the porosity of a previously reported capillary experimental system. Additionally, biofilm surface geometrical aspects were satisfactorily compared with reports of experimental and similar rigorously simulated benchmark systems...
April 13, 2017: Biofouling
https://www.readbyqxmd.com/read/28402176/identification-of-bacterial-contaminants-from-calcium-carbonate-filler-production-lines-and-an-evaluation-of-biocide-based-decontamination-procedures
#3
Duško Odić, Jana Prah, Gorazd Avguštin
The aim of this study was to analyze the bacterial community in the production line of a calcium carbonate filler production company and to investigate possible causes for bacterial presence. Throughout 2012, 24 carbonate slurry and six groundwater samples were analyzed. Pseudomonas and Microbacterium were the most frequent contaminants in the slurry, whereas Pseudomonas and Brevundimonas dominated the groundwater samples. Of the 43 different bacterial strains isolated, only five were found both in the slurry and the groundwater, indicating that the latter was not a major source of contamination...
April 12, 2017: Biofouling
https://www.readbyqxmd.com/read/28349700/fast-corroding-thin-magnesium-coating-displays-antibacterial-effects-and-low-cytotoxicity
#4
Sarah Zaatreh, David Haffner, Madlen Strauß, Katharina Wegner, Mareike Warkentin, Claudia Lurtz, Christiane Zamponi, Wolfram Mittelmeier, Bernd Kreikemeyer, Regine Willumeit-Römer, Eckhard Quandt, Rainer Bader
Bacterial colonisation and biofilm formation are characteristics of implant-associated infections. In search of candidates for improved prosthetic materials, fast corroding Mg-based coatings on titanium surfaces were examined for their cytotoxic and antimicrobial properties. Human osteoblasts and Staphylococcus epidermidis were each cultured on cylindrical Ti samples coated with a thin layer of Mg/Mg45Zn5Ca, applied via magnetron sputtering. Uncoated titanium samples served as controls. S. epidermidis was quantified by counting colony forming units...
March 28, 2017: Biofouling
https://www.readbyqxmd.com/read/28347177/new-mechanistic-insights-into-the-motile-to-sessile-switch-in-various-bacteria-with-particular-emphasis-on-bacillus-subtilis-and-pseudomonas-aeruginosa-a-review
#5
Faizan A Sadiq, Steve Flint, Yun Li, TongJie Liu, Yuan Lei, Hafiz Arbab Sakandar, GuoQing He
A biofilm is a complex assemblage of microbial communities adhered to a biotic or an abiotic surface which is embedded within a self-produced matrix of extracellular polymeric substances. Many transcriptional regulators play a role in triggering a motile-sessile switch and in consequently producing the biofilm matrix. This review is aimed at highlighting the role of two nucleotide signaling molecules (c-di-GMP and c-di-AMP), toxin antitoxin modules and a novel transcriptional regulator BolA in biofilm formation in various bacteria...
March 28, 2017: Biofouling
https://www.readbyqxmd.com/read/28317391/in-vitro-inhibitory-effects-of-farnesol-and-interactions-between-farnesol-and-antifungals-against-biofilms-of-candida-albicans-resistant-strains
#6
Jinping Xia, Fang Qian, Wenqian Xu, Zhenzhen Zhang, Xin Wei
Antifungal resistance is a serious problem in clinical infections. Farnesol, which is a potential antifungal agent against biofilms formed by Candida albicans resistant strains (a fluconazole-resistant isolate derived from SC5314 and two clinical Candida resistant isolates), was investigated in this study. The inhibitory effects of farnesol on biofilms were examined by XTT assay. The morphological changes and biofilm thicknesses were analyzed by scanning electron microscopy and confocal laser scanning microscopy, respectively...
March 20, 2017: Biofouling
https://www.readbyqxmd.com/read/28155334/inhibitory-effects-of-the-essential-oils-%C3%AE-longipinene-and-linalool-on-biofilm-formation-and-hyphal-growth-of-candida-albicans
#7
Ranjith Kumar Manoharan, Jin-Hyung Lee, Yong-Guy Kim, Soon-Il Kim, Jintae Lee
Candida albicans is one of the most common fungal pathogens, and causes systemic and invasive infections in humans. C. albicans biofilms are composed of yeast and hyphal and pseudohyphal elements, and the transition of yeast to the hyphal stage could be a virulence factor. In this study, diverse essential oils were initially investigated for anti-biofilm activity against C. albicans strains, and cascarilla bark oil and helichrysum oil and their components α-longipinene (a major constituent of both) and linalool were found to markedly inhibit biofilm formation without affecting planktonic cell growth...
February 3, 2017: Biofouling
https://www.readbyqxmd.com/read/28151007/antialgal-activity-of-poly-2-dimethylamino-ethyl-methacrylate-pdmaema-brushes-against-the-marine-alga-ulva
#8
Wetra Yandi, Sophie Mieszkin, Maureen E Callow, James A Callow, John A Finlay, Bo Liedberg, Thomas Ederth
Marine biofouling has detrimental effects on the environment and economy, and current antifouling coatings research is aimed at environmentally benign, non-toxic materials. The possibility of using contact-active coatings is explored, by considering the antialgal activity of cationic poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes. The antialgal activity was investigated via zoospore settlement and sporeling growth assays of the marine algae Ulva linza and U. lactuca. The assay results for PDMAEMA brushes were compared to those for anionic and neutral surfaces...
February 2, 2017: Biofouling
https://www.readbyqxmd.com/read/28140677/furvina-inhibits-the-3-oxo-c12-hsl-based-quorum-sensing-system-of-pseudomonas-aeruginosa-and-qs-dependent-phenotypes
#9
Anabela Borges, Pedro Sousa, Alexandra Gaspar, Santiago Vilar, Fernanda Borges, Manuel Simões
Disruption of cell-cell communication or quorum sensing (QS) is considered a stimulating approach for reducing bacterial pathogenicity and resistance. Although several QS inhibitors (QSIs) have been discovered so far their clinical use remains distant. This problem can be circumvented by searching for QSI among drugs already approved for the treatment of different diseases. In this context, antibiotics have earned special attention. Whereas at high concentrations antibiotics exert a killing effect, at lower concentrations they may act as signaling molecules and as such can modulate gene expression...
January 31, 2017: Biofouling
https://www.readbyqxmd.com/read/28270055/the-response-of-escherichia-coli-biofilm-to-salicylic-acid
#10
Cristina Cattò, Giovanni Grazioso, Silvia Dell'Orto, Arianna Gelain, Stefania Villa, Valeria Marzano, Alberto Vitali, Federica Villa, Francesca Cappitelli, Fabio Forlani
In this research, salicylic acid is proposed as an alternative biocide-free agent suitable for a preventive or integrative anti-biofilm approach. Salicylic acid has been proved to: (1) reduce bacterial adhesion up to 68.1 ± 5.6%; (2) affect biofilm structural development, reducing viable biomass by 97.0 ± 0.7% and extracellular proteins and polysaccharides by 83.9 ± 2.5% and 49.5 ± 5.5% respectively; and (3) promote biofilm detachment 3.4 ± 0.6-fold. Moreover, salicylic acid treated biofilm showed an increased amount of intracellular (2...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270054/marine-anti-biofouling-efficacy-of-amphiphilic-poly-coacrylate-grafted-pdmse-effect-of-graft-molecular-weight
#11
Cary A Kuliasha, John A Finlay, Sofia C Franco, Anthony S Clare, Shane J Stafslien, Anthony B Brennan
There is currently strong motivation due to ecological concerns to develop effective anti-biofouling coatings that are environmentally benign, durable, and stable for use by the maritime industry. The antifouling (AF) and fouling-release (FR) efficacy of amphiphilic, charged copolymers composed of ~52% acrylamide, ~34% acrylic acid, and ~14% methyl acrylate grafted to poly(dimethyl siloxane) (PDMSe) surfaces were tested against zoospores of the green alga Ulva linza and the diatom Navicula incerta. The biofouling response to molecular weight variation was analyzed for grafts ranging from ~100 to 1,400 kg mol(-1), The amphiphilic coatings showed a marked improvement in the FR response, with a 55% increase in the percentage removal of diatoms and increased AF efficacy, with 92% reduction in initial attachment density of zoospores, compared to PDMSe controls...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270053/corrigendum
#12
(no author information available yet)
No abstract text is available yet for this article.
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270052/experimental-and-statistical-methods-to-evaluate-antibacterial-activity-of-a-quaternary-pyridinium-salt-on-planktonic-biofilm-forming-and-biofilm-states
#13
Daneli López Pérez, Paula J Baker, Adam L Pintar, Jirun Sun, Nancy J Lin, Sheng Lin-Gibson
Robust evaluation and comparison of antimicrobial technologies are critical to improving biofilm prevention and treatment. Herein, a multi-pronged experimental framework and statistical models were applied to determine the effects of quaternary pyridinium salt, 4-acetyl-1-hexadecylpyridin-1-ium iodide (QPS-1), on Streptococcus mutans in the planktonic, biofilm-forming and biofilm cell states. Minimum inhibitory and bactericidal concentrations (MIC and MBC, respectively) were determined via common methods with novel application of statistical approaches combining random effects models and interval censored data to estimate uncertainties...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270051/towards-an-understanding-of-marine-fouling-effects-on-the-vortex-induced-vibrations-of-circular-cylinders-partial-coverage-issue
#14
M Zeinoddini, A Bakhtiari, F Schoefs, A P Zandi
The results of in-water vortex-induced vibration (VIV) experiments on circular cylinders artificially covered with barnacles are reported. The paper focusses on the effects of the partial coverage and the shape of the fouling elements. An artificial barnacle typical of marine fouling was synthesised using 3-D printing. Coverage ratios of 80, 50 and 30% were examined and the results compared with those from a smooth cylinder. The Reynolds number ranged from 5.8 × 10(3) to 6.6 × 10(4). The experimental results show that the fouling reduced the peak VIV amplitude, narrowed the synchronisation region and lowered the hydrodynamic force coefficients such as the coefficients of lift force RMS, the mean drag force and the fluctuating drag force RMS...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270050/water-quality-and-daily-temperature-cycle-affect-biofilm-formation-in-drip-irrigation-devices-revealed-by-optical-coherence-tomography
#15
Jueying Qian, Harald Horn, Jorge Tarchitzky, Yona Chen, Sagi Katz, Michael Wagner
Drip irrigation is a water-saving technology. To date, little is known about how biofilm forms in drippers of irrigation systems. In this study, the internal dripper geometry was recreated in 3-D printed microfluidic devices (MFDs). To mimic the temperature conditions in (semi-) arid areas, experiments were conducted in a temperature controlled box between 20 and 50°C. MFDs were either fed with two different treated wastewater (TWW) or synthetic wastewater. Biofilm formation was monitored non-invasively and in situ by optical coherence tomography (OCT)...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28198664/microbial-fouling-and-corrosion-of-carbon-steel-in-deep-anoxic-alkaline-groundwater
#16
Pauliina Rajala, Malin Bomberg, Mikko Vepsäläinen, Leena Carpén
Understanding the corrosion of carbon steel materials of low and intermediate level radioactive waste under repository conditions is crucial to ensure the safe storage of radioactive contaminated materials. The waste will be in contact with the concrete of repository silos and storage containers, and eventually with groundwater. In this study, the corrosion of carbon steel under repository conditions as well as the microbial community forming biofilm on the carbon steel samples, consisting of bacteria, archaea, and fungi, was studied over a period of three years in a groundwater environment with and without inserted concrete...
February 2017: Biofouling
https://www.readbyqxmd.com/read/28198663/unhindered-copper-uptake-by-glutaraldehyde-polyethyleneimine-coatings-in-an-artificial-seawater-model-system-with-adsorbed-swollen-polysaccharides-and-competing-ligand-edta
#17
Simarpreet Kaur, Ivan M Kempson, Johan B Lindén, Mikael Larsson, Magnus Nydén
Shortly after a surface is submerged in the sea, a conditioning film is generally formed by adsorption of organic molecules, such as polysaccharides. This could affect transport of molecules and ions between the seawater and the surface. An artificial seawater model system was developed to understand how adsorbed polysaccharides impact copper binding by glutaraldehyde-crosslinked polyethyleneimine coatings. Coating performance was also determined when competed against copper-chelating EDTA. Polysaccharide adsorption and copper binding and distribution were investigated using advanced analytical techniques, including depth-resolved time-of-flight secondary ion mass spectroscopy, grazing incidence X-ray absorption near-edge spectroscopy, quartz crystal microbalance with dissipation monitoring and X-ray photoelectron spectroscopy...
February 2017: Biofouling
https://www.readbyqxmd.com/read/28121162/quorum-sensing-inhibition-in-pseudomonas-aeruginosa-biofilms-new-insights-through-network-mining
#18
Martín Pérez-Pérez, Paula Jorge, Gael Pérez Rodríguez, Maria Olívia Pereira, Anália Lourenço
Quorum sensing plays a pivotal role in Pseudomonas aeruginosa's virulence. This paper reviews experimental results on antimicrobial strategies based on quorum sensing inhibition and discusses current targets in the regulatory network that determines P. aeruginosa biofilm formation and virulence. A bioinformatics framework combining literature mining with information from biomedical ontologies and curated databases was used to create a knowledge network of potential anti-quorum sensing agents for P. aeruginosa...
January 25, 2017: Biofouling
https://www.readbyqxmd.com/read/28054493/epilithic-and-endolithic-microorganisms-and-deterioration-on-stone-church-facades-subject-to-urban-pollution-in-a-sub-tropical-climate
#19
Christine Gaylarde, Jose Antônio Baptista-Neto, Akiko Ogawa, Matthew Kowalski, Sukriye Celikkol-Aydin, Iwona Beech
Weathering of two church facades in Rio de Janeiro was caused substantially by salts, mainly halite and gypsum, detected by SEM and chemical analyses, which cause physical stresses by deposition within the rock. Biofilm populations, determined by SEM and as operational taxonomic units (OTUs), degraded stone by penetration, solubilization and redeposition of minerals on their surfaces. Endolithic cyanobacteria were associated with gypsum deposits. Microbiomes were typical for high-stress environments, high salt, intense insolation, low water and low nutrients (eg halophilic Rubrobacter, Salinicola, Sterigmatomyces)...
January 5, 2017: Biofouling
https://www.readbyqxmd.com/read/28005415/proteome-analysis-of-human-serum-proteins-adsorbed-onto-different-titanium-surfaces-used-in-dental-implants
#20
Francisco Romero-Gavilán, N C Gomes, Joaquin Ródenas, Ana Sánchez, Mikel Azkargorta, Ibon Iloro, Felix Elortza, Iñaki García Arnáez, Mariló Gurruchaga, Isabel Goñi, Julio Suay
Titanium dental implants are commonly used due to their biocompatibility and biochemical properties; blasted acid-etched Ti is used more frequently than smooth Ti surfaces. In this study, physico-chemical characterisation revealed important differences in roughness, chemical composition and hydrophilicity, but no differences were found in cellular in vitro studies (proliferation and mineralization). However, the deposition of proteins onto the implant surface might affect in vivo osseointegration. To test that hypothesis, protein layers formed on discs of both surface type after incubation with human serum were analysed...
January 2017: Biofouling
journal
journal
30903
1
2
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"