7 documents found, page 1 of 1
Sustainable strategy and bio-based sorbents for pesticides removal
Utzeri, GianlucaTese de Doutoramento em Química apresentada à Faculdade de Ciências e Tecnologia; Ao longo da tese, a preocupação representada pela contaminação de pesticidas foi abordada de perspectivas diferentes. Para compreender profundamente as interações físicas ou químicas envolvidas nas interfaces líquido-líquido e sólido-líquido, foram aplicados diferentes métodos. De fato, a técnica de difusão de Taylor foi utilizada...
Straightforward purification method for the determination of the activity of gl...
González-Ceballos, Lara; Carlos Guirado-Moreno, Jose; Utzeri, Gianluca; Miguel García, José; Fernández-Muiño, Miguel A.; Osés, Sandra M.Glucose oxidase (GOX) and catalase (CAT) regulate the amount of H2O2 in honey, by generating or consuming it, so they are related to the antibacterial and antioxidant activity of honey. However, their activities are hardly analysed, since the process requires a previous dialysis that is non-selective, very time-consuming (>24 h), eco-unfriendly (>6L of buffer) and expensive. This research shows the design and p...
Transport properties of aqueous solutions of the oncologic drug 5-fluorouracil:...
Verissimo, Luis M. P.; Cabral, Inês; Cabral, Ana M. T. D. P. V.; Utzeri, Gianluca; Veiga, Francisco J. B.; Valente, Artur J. M.; Ribeiro, Ana C. F.Cancer pharmacology is often markedly toxic and must be precisely dosed in order to reach the therapeutic bioavailability under strict control. Transport properties are important tools in the process of interpretation and fine-tuning pharmaceutical applications, notably for drugs that have a long record of use and have met their limits of bioavailability. 5–Fluorouracil (5-FU) is one of the most used antineopla...
Effect of Cobalt and Chromium Ions on the Chlorhexidine Digluconate as Seen by ...
Fangaia, Sónia I. G.; Nicolau, Pedro M. G.; Guerra, Fernando A. D. R. A.; Rodrigo, M. Melia; Utzeri, Gianluca; Cabral, Ana M. T. D. P. V.Metal ions such as cobalt (II) and chromium (III) might be present in the oral cavity, as a consequence of the corrosion of Co-Cr dental alloys. The diffusion of such metal ions into the organism, carried by saliva, can cause health problems as a consequence of their toxicity, enhanced by a cumulative effect in the body. The effect of the chlorhexidine digluconate, which is commonly used in mouthwash formulatio...
Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides ...
Utzeri, Gianluca; Veríssimo, Luís; Murtinho, Dina; Pais, Alberto; Perrin, F. Xavier; Ziarelli, Fabio; Iordache, Tanta-Verona; Sarbu, AndreiPesticides are widely used in agriculture to increase and protect crop production. A substantial percentage of the active substances applied is retained in the soil or flows into water courses, constituting a very relevant environmental problem. There are several methods for the removal of pesticides from soils and water; however, their efficiency is still a challenge. An alternative to current methods relies o...
Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides ...
Utzeri, Gianluca; Veríssimo, Luís; Murtinho, Dina; Pais, Alberto; Perrin, F. Xavier; Ziarelli, Fabio; Iordache, Tanta-Verona; Sarbu, AndreiPesticides are widely used in agriculture to increase and protect crop production. A substantial percentage of the active substances applied is retained in the soil or flows into water courses, constituting a very relevant environmental problem. There are several methods for the removal of pesticides from soils and water; however, their efficiency is still a challenge. An alternative to current methods relies o...
Desenvolvimento de biogéis de pectina e quitosano para a sorção de Cymoxanil
Utzeri, GianlucaDissertação de Mestrado em Química apresentada à Faculdade de Ciências e Tecnologia; O termo pesticida compreende uma ampla gama de produtos para a proteção das plantas (PPPs) e biocidas que podem apresentar diferentes níveis de persistência e toxicidade, afetando o ambiente e os seres vivos, dependendo de muitos fatores e da forma de contato. Consequentemente, a sua remoção do ambiente e das águas superficiais...