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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 34 for “"Tannic acid"”.
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Engineering translational vaccine delivery systems with the polyphenol tannic acid
… due to their ease of formulation and modularity. Tannic acid (TA) is a naturally-occurring compound that has a demonstrated ability to engage in supramolecular interactions with biological cargo, including proteins, nucleic acids, and cell membranes. In this thesis, we harnessed the broad …
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Hydrogen-bonded layer-by-layer assembly of poly(vinyl alcohol) and tannic acid
Hydrogen-bonded multilayer thin films containing tannic acid (TA) and poly(vinyl alcohol) (PVA) were assembled under different pH conditions, and film growth and dissolution behavior was assessed through profilometry. Optimal film growth was achieved at pH 4.0, which contrasted with uncontrollable …
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Produção e qualidade do leite de vacas primiparas (alimentas) com diferentes níveis de ácido tânico
… cows with the addition of increasing levels of tannic acid in the diet. The experiment was carried out in the cattle breeding sector, at the Agrarian Sciences Center of the Federal University of Paraíba, from February to May 2015, with a duration of three months. The experiment was divided into …
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Effects of tannins on protein digestibility and detoxification activity in gray squirrels (Sciurus carolinensis)
… fed rat chow containing no tannins, 4% or 8% tannic acid (hydrolyzable tannin), or 3% or 6% quebracho (condensed tannin). Apparent protein and energy digestibilities of tannic acid-containing diets were lower than the control. These reductions were likely due to the formation of strong …
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Synthesis and characterization of Carbon Quantum Dots, ZnO and Magnetic Nanoparticles. New Analytical Applications
… Molecules of clinical (5-hydroxyindole acetic acid, 5-HIAA), environmental (4-nitrophenol) and food (tannic acid) concern have been used as model analytes. Also, the functionalization of ZnO nanoparticles was addressed with the aim to use them as lubricant additives and as nanosensors. Firstly, …
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Koloidinių tirpalų sudarytų iš polimerinių ir metalinių nanodalelių tyrimai /
… of AgNPs from colloidal solution containing tannic acid on mica covered by the poly(allylamine hydrochloride) has been investigated. Physicochemical properties and stability of tannic acid solution and silver nanoparticles colloidal solution have been determined. Investigations of …
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Re-strengthening demineralized bone via tannin-iron crosslinking
… tris-complexes that are able to form between tannic acid and ferrous iron ion in solution, the strengthening ability of the film increases dramatically. Specifically, we show that tannin iron tris-complex coating results in a 1062% increase in the flexural modulus for fully hydrated and …
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Design, Development and Evaluation of Dual Drug Nanomedicine for Non-Small Cell Lung Cancer
… nucleoside antimetabolite and Gambogic acid (GA) (a highly hydrophobic chemo sensitizer agent)- were developed on human serum albumin-tannic acid nano-platform (HTA) for targeted treatment of NSCLC.Our in vitro results demonstrate that Gem and GA combination therapy has tremendous …
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Quantification of Total Phenolic Content and Antioxidant Activity of Oat Cultivars Grown in South Dakota
… 2 picrylhydrazyl (DPPH) assay. Pure standards (tannic acid, quercetin, 5- hydroxyanthranillic acid, caffeic acid, ferulic acid, p-coumaric acid, and sinapic acid) were tested to allow for data interpretation and method validation. Total phenolic content ranged from 78.6 mg Tannic Acid …
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Inhibiting platelet scramblase activity
… were pursued. The polyphenolic compounds tannic acid and epigallocatechin gallate (EGCG’) inhibit TMEM16F activity when over-expressed in cell lines. Both tannic acid and EGCG’ are shown to inhibit platelet scramblase activity. An empirical screen of polyphenolic compounds defined an …
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Investigating coordinate network based films through mechanical and optical properties
… the mechanical and optical properties of tannic acid and 4 arm catechol polyethylene glycol based coordinate network films. It shows that these films can contribute to energy dissipation and undergo pH-induced optical shifts when used as coatings on soft hydrogels. It also provides …
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Multifunctional Hybrid Theranostic Nanoplatforms for Cancer Imaging and Therapy
… tool for precision medicine. We first designed tannic acid-based bimetallic nanoplatforms. Gadolinium and titanium were incorporated via coordination bonds with tannic acid to generate contrast for magnetic resonance imaging (MRI) and reactive oxygen species (ROS) for radionuclide-stimulated …
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Development of a toolbox for the reduction of hordeins in barley malt beers
… two different concentrations of silica gel and tannic acid. Silica gel was very effective in reducing beer hordeins, 90% of beer hordeins were removed compared to the control beer. Beer hordeins could be reduced to below 10 mg/kg and the beer qualities such as foam, colour and flavour were not …
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Poly(vinyl alcohol) based hydrogen-bonded multilayers : from pH-controlled multi-stage dissolution to zwitter-wettable surfaces
… molecular weight and the type of weak polyacids. Subtle variations due to the prevalence of PVA acetate moieties, characterized by the degree of hydrolysis, were shown to cause drastic differences both in self-assembly with its hydrogen-bonding partners as well as its overall pH-stability. …
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Removal of complexed iron by chemical oxidation and/or alum coagulation
… variety of sources and included humic and fulvic acids, tannic acid and oxalic acid. Oxidants evaluated were potassium permanganate, free chlorine, and chlorine dioxide. Both laboratory-scale and field monitoring studies were performed. The relative molecular weight distribution (MWD) of the DOC …
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The Role of Plant Chemical Defenses in The Nutritional Ecology of Voles
… showed that plant phenolics (quercetin, tannic acid, and quebracho) can reduce survival and growth of voles. The effects of phenolics were related to molecular structure, and included toxicity, feeding deterrence, and reduction of protein digestibility. Mammalian herbivores detoxicate …
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Bioinspired mineralization in hydrogels for sustainable materials processing
… properties to the material. Finally, we used tannic acid to modify the growth of calcium carbonate particles, which we employed as green additives for reducing the friction and wear of lubricants.
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Effects of tooth quality, tooth structure, and cement mixing ratios on dental adhesion
… samples that retained the enamel wall. Sulfuric acid and tannic acid etching of dentin were performed for both ground and unground teeth. Unground dentin specimens were also exposed to thermal aging at 65° C. The torsional bond strength of the dental tissues under these modified processing …
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Novel Paclitaxel Nanoparticles for Enhanced Therapeutic Effects in Breast Cancer
… with built-in chemosensitization motifs (tannic acid: TA) and polyvinyl/pyrrolidone (PVP), given their innate potential to prevent drug efflux and capability to form the structured nanoparticle core due to extensive hydrogen bonding. The optimized formulation of TA and PVP nanoparticles …
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