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 28 for “"Ethylenediaminetetraacetic acid (EDTA)"”.
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The Effects of Irradiation and Antioxidants on Myoglobin Derived From Beef Hearts
… with one of four antioxidants (control, citric acid (CA), ethylenediaminetetraacetic acid (EDTA) or propyl gallate (PG)) and irradiated at 0.00, 1.25 or 2.50 kGy. Samples were then evaluated for thiobarbituric reactive substances (TBARS), pH, Hunter color, absorbance and reflectance over the …
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Polygalacturonate lyase activity in Bacteroides from the human colon
… have been found to degrade polygalacturonic acid and/or pectin. Four of these strains were examined for presence of polygalacturonate lyase (PGAL). The Bacteroides strains studied synthesized inducible, cell-associated PGALs when the bacteria were grown on media containing polygalacturonic …
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Effect of Iron on the Oxidative Capacity of Carbonaceous Nanoparticles
… complexed with the strongest ligand, namely ethylenediaminetetraacetic acid (EDTA). These results suggest that Fe complexed to strong ligands in the presence of graphene-rich CNP can be redox active and lead to the production of detrimental ROS, providing new information regarding the …
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Development and evaluation of novel antimicrobial solutions against biofilms and planktonic microbial growth
… Each solution is compiled of three reagents; Ethylenediaminetetraacetic acid (EDTA), hydrogen peroxide, and ethanol, were used against planktonic (free-floating) microorganisms and biofilms (aggregated microorganisms). The Planktonic assay implemented use of a Millipore Filtration system. The …
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pH Stability of Calcium Hydroxide Preparations in a Simulated Acidic Environment
… However, its efficacy is challenged by the acidic pH of purulent exudates in infected root canals. This study aimed to evaluate the pH stability of three calcium hydroxide preparations—BC Temp (bioceramic-based), UltraCal XSTM, and mixed Ca(OH)₂ powder with saline—in simulated acidic and …
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Response of corn to high levels of CuSO₄ and ZnSO₄ applications
… higher rate of extraction was attributed to the ethylenediaminetetraacetic acid (EDTA) in the Mehlich-3 solution.
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Reconstitution of a Multi-layered, Differentiated Cornea by HTERT-Immortalized Corneal Epithelial Cells Transduced with Thymidine Kinase Transplanted onto Denuded Mouse Corneas
… established in athymic nude mice (n=75) using ethylenediaminetetraacetic acid (EDTA) and mitomycin C treatment followed by mechanical debridement of corneal and limbal epithelium. Immunofluorescence (IF) using Anti-Laminin and Propidium iodide (PI) was used to assess presence of basement …
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Secondary Metabolite Production By An Endophytic Bacillus sp. from Platanus Occidentalis
… flour. This is a possible candidate to replace ethylenediaminetetraacetic acid (EDTA), a synthetic metal chelator used to prevent food spoilage. Further studies on possible endophytic production of nicotianamine could be of great importance to many food companies. The importance of studying …
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The creation of novel methodologies to examine the effects of phosphorus amendments on petroleum hydrocarbon bioremediation
… pretreatments to a sodium hydroxide - ethylenediaminetetraacetic acid (EDTA) extraction, sodium acetate recovered the largest concentration of P from Po-doped calcareous subsoils (5.6% Pt) compared to other tested schemes (3.5-4.8% Pt). However, EDTA hindered MS Po quantification. While …
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Microbial carbon within and above exotic copper deposits in northern Chile : implications for ore genesis and exploration
… to analyse weakly bound carbon dioxide; and (4) ethylenediaminetetraacetic acid (EDTA) extraction followed by IRMS. EDTA-partial extraction favours the dissolution of minerals with divalent cations, releasing as carbon dioxide the carbon trapped within the crystal structure. All four of these …
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Investigation of Membrane Fouling and Cleaning in Direct Contact Membrane Distillation of Municipal Wastewater
… investigated the chemical cleaning efficiency of ethylenediaminetetraacetic acid (EDTA) on membrane wastewater effluent fouling for direct contact membrane distillation (DCMD) to help assist wastewater reuse become a reality. A laboratory scale DCMD system was designed and constructed including a …
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An in-vitro SEM study comparing the debridement efficacy of the EndoVac® system versus the Canal CleanMax® following hand-rotary istrumentation
… 6.0-percent sodium hypochlorite and 17- percent ethylenediaminetetraacetic acid (EDTA). However, the irrigation/aspiration techniques differed among three groups of 20 randomly selected teeth. Group one (control) was irrigated with only a 12-ml Monoject syringe via 30-gauge side-vented, …
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Biopharmaceutical approaches for improved drug delivery across ocular barriers
… (chitosan, benzalkonium chloride (BAK) and ethylenediaminetetraacetic acid (EDTA)) and formulation approaches (cyclodextrins and solid lipid nanoparticles (SLNs)) were evaluated in terms of their ability to improve the ocular bioavailability of hydrophilic and lipophilic compounds, …
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Identifying the Relevance of C-Reactive Protein Conformers and the Advancement of a Membrane Curvature Binding Assay
… denaturants: guanidine hydrochloride, urea with ethylenediaminetetraacetic acid (EDTA), and heating with dilute sodium dodecyl sulfate (SDS). After comparing results from biochemical assays to determine structural and functional differences, mCRP treated with dilute SDS and heat was the form that …
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The effect of copper sulphate on froth stability
… was confirmed by the use of zeta potential and ethylenediaminetetraacetic acid (EDTA) extraction of surface products. The pulp phase effects were analysed through the floatability of pure minerals and analysis of surface products after copper sulphate activation and these were linked to the …
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Prospective retarders for alkali-activated slag: stability at high alkalinity, effects on setting behavior and strength of paste
… chloride) (PDADMAC), ethylenediaminetetraacetic acid (EDTA) and zinc oxide nanoparticles. Isothermal calorimetry was the primary test conducted to observe effects on the reaction rate. Stability in the high pH environment was assessed visually and also chemically …
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The use of simple analytical techniques to assess surface oxidation of sulphide ores
… both time and money. This study investigated the Ethylenediaminetetraacetic acid (EDTA) Extraction Technique and Reactivity Number (RN) Technique as possible techniques to quantitatively describe oxidation levels in different ore types with different mineral compositions and grade. The aim was to …
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Bio-renewable hydrogel sorbents for removal of heavy metals from water
… derivatives were covalently crosslinked with an ethylenediaminetetraacetic acid (EDTA)-based crosslinker modified with four hydrazide groups (4h-EDTA) to construct hydrazone crosslinked hydrogels. In Chapter 2, rheology, a method to quantify mechanical strength, was used to optimize the …
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The effect of phosphorus fertilizer and bradyrhizobium innoculation on grain yield and nutrients accumulation in two chickpea (Cicer aritienum L.) genotypes
… P, K, Ca, Mg were determined using the citric acid method. The total N concentration were determined by the micro-Kjeldahl method in both soil, shoots and grain. Zn was extracted using a di-ammonium ethylenediaminetetraacetic acid (EDTA) solution. The content of macronutrients (P, K, Ca, Mg, …
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Chemically Induced Phytoextraction of Lead (Pb) Contaminated Soil by Switchgrass (Panicum virgatum L.)
… propiconazole), the chelator nitrilotriacetic acid (NTA), and the phytohormones salicylic acid (SA) and benzylaminopurine (BAP) were tested on switchgrass grown in Pb contaminated soil from a former superfund site in Cedartown, GA. The soil chemical manipulation aimed at increasing the …
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