Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"antimicrobial effect"”.
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The antimicrobial effect of orange, lemon and bergamot esential oils against Enterococcus sp
Citrus essential oils (EO) are potential antimicrobials, first described as such in 1949 by Piacentini. Due to their acceptability in terms of fragrance and flavour characteristics, they lend themselves to use both in food and in clinical practice. Lemon (Citrus limon) or sweet orange (Citrus …
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Antimicrobial effect of lime juice and java plum juice on foodborne pathogenic bacteria
… food, there has been an increasing interest in antimicrobials from natural sources. This study aimed to evaluate the antimicrobial effect of lime juice and java plum juice on aforementioned foodborne pathogenic bacteria in microbiological media and food models. First, agar well diffusion assay …
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Dose Determines if Soluble Copper is a Nutrient or an Antimicrobial for Legionella pneumophila in Premise Plumbing
The effect of copper on Legionella pneumophila in potable water plumbing systems is dependent on its dose and water chemistry. For instance, prior research demonstrated that the presence of aluminum hydroxide from anode rods in water heaters can bind copper and render high doses non-toxic. On this …
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Bioactive evaluations of novel peptide QUB-2552 from the skin secretion of the Chinese Large Odorous frog, Rana (Odorrana) livida
… drug candidates. Among these natural peptides, antimicrobial peptides have attracted great attention given that they might help to deal with the problem of antibiotic resistance. In this study, the precursor-encoding cDNA sequence of a novel bioactive peptide QUB-2552 was identified in the skin …
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The Use of Natural Products as Potential Anti-Pseudomonas Agents
… patients. In this study, we investigated the effects of different natural products on <em>Pseudomonas</em>. The products included a polysaccharide, two flavonoids tangeretin and nobiletin and their derivatives, 5’OH-tangeretin and 5’OH-nobiletin, black tea polyphenol – theaflavins (TFs), as …
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Experiment-Based Quantitative Modeling for the Antibacterial Activity of Silver Nanoparticles
<p>Silver (Ag) has been well known for its antimicrobial activity for a long time. Recent research showed the potential of Ag nanoparticles as emerging antimicrobial agents. However, little quantitative analysis has been performed so far to decipher the mechanism of interaction between …
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ANTIMICROBIAL PROPERTIES OF PLATELET-RICH PLASMA
… been recently pointed out. In this study, the antimicrobial effect of pure platelet-rich plasma (P-PRP) was evaluated against microorganisms isolated from oral cavity, such as Candida albicans, Enterococcus faecalis, Pseudomonas aeruginosa, Streptococcus agalactiae and Streptococcus oralis. …
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Identification and functional study of a bioactive peptide QUB-1962 from the skin secretion of the yellow-bellied toad (Bombina variegata)
… more antibiotics have lost their due role. The antimicrobial peptide has become the most promising substance in the next class of antimicrobial agents. QUB-1962 is a cationic antimicrobial peptide isolated from the skin secretions of Bombina variegata. Using the "shotgun" cloning technique, a …
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Liposome-loaded biosynthetic bacterial cellulose hydrogels for wound management applications
… novel wound dressing materials to facilitate effective wound healing. The invasion of pathogenic microorganisms at the site of the wound bed, can further stall the wound healing process. Infected, chronic wounds are responsible for significant morbidity and mortality rates across the globe, …
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Discovery and bioactivity assessment of a novel peptide from the skin secretion of the Senegal running frog Kassina senegalens
… with an abundance of biologically active antimicrobial peptides (AMPs) with a broad-spectrum effect against a variety of microorganisms. The contribution of their complex and diverse structures, physicochemical properties and mechanisms of biological activity, have been discovered and …
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Comparison of an Ultrasonic and a Non-Ultrasonic Endodontic Irrigation Protocol: A Clinical Study
… as NaOCl and Chlorhexidine can increase the sum antimicrobial effect. The purpose of this randomized, double blinded, prospective in-vivo clinical study was to compare the results of a non-activated irrigation protocol (NAI) using only NaOCl 1.5% to a passive ultrasonic irrigation protocol (PUI) …
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Molecular cloning, peptide synthesis and bioactive assessment of a skin defensive peptide, QUB-3055 from the skin secretion of Hylarana latouchii
… strains, more and more antibiotics lose their effect. Antimicrobial peptides (AMPs) which are the most promising substances to be the next antimicrobial reagents are being continuously studied. In this research, we obtained QUB-3055 precursor-encoding cDNAs from skin secretions of Hylarana …
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Evaluation of Peanut Skin Extract, Grape Seed Extract, and Grape Seed Extract Fractions to Reduce Populations of Select Foodborne Pathogens
… of polyphenols, known to possess antioxidant and antimicrobial properties. A subcategory of polyphenol is procyanidin, which can be divided into two types, type A and type B. Type A (PSE), contains two single bonds connecting the phenolic groups while type B (GSE), contains one single bond …
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A novel bioactive peptide from the skin secretion of the Chinese brown frog, Rana chensinensis
… therapeutic potential.In this thesis, a novel antimicrobial peptide, named QUB-1463, was isolated and identified in the secretions of the Chinese brown frog, Rana chensinensis. Via "shotgun" molecular cloning, the biosynthetic precursor sequence of QUB-1463 was obtained. Afterwards, RP-HPLC and …
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Investigation into the surface modification of Ti-6Al-4V to facilitate antimicrobial ionic silver integration for use in implantable orthopaedic devices
… on reducing bio-inertness and improving the antimicrobial properties of titanium via the incorporation of silver. In general, the studies conducted on antibacterial surfaces are limited to testing the final sample directly in contact with bacteria, with no attempt to measure silver release …
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Calorimetric studies of microbiological systems
… a variability of 2 to 4% were used to test the antimicrobial efficacy of Aquacel-Ag compared with silver nitrate on P. aeruginosa, S. aureus, and a 50:50 mixed culture in both nutrient broth and simulated wound fluid (SWF). Results show that a small amount (1 cm2) of wound dressing containing …
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Silver Doped Hydroxyapatite Coating on Titanium Surfaces and its Effect on Early Bone Response and Osseointegration
… (Ti) implants have been widely used due to its effect on bone response. However, microbial infection is common. One material known to have anti-microbial properties is silver (Ag). However, the effects Ag has on osteoblastic activity as well as decrease bacterial load has yet to be …
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Efficacy of Selected Powdered Floor Treatments and Turmeric Rhizome Powder Against Salmonella, E. coli, and L. monocytogenes on Polyurethane-Concrete Flooring Material Carriers
… Environmental Protection Agency (EPA) registered antimicrobials while others were not but contain chemicals that might provide an antimicrobial effect despite their actual labeled purpose. These substances were evaluated to determine their relative effectiveness against cocktails of Salmonella, …
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Novel antimicrobial combinations for treatment against pathogens associated with infected diabetic foot ulcers
Many promising conventional antimicrobial agents have low permeability and restricted biodistribution, their encapsulation into efficient drug delivery carriers is crucial to increasing their bioavailability and retention time. Lipodisq® (LQ) nanoparticles consist of a circular phospholipid bilayer …
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