RSS 1.0Departamento de Química
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Concomitant binding of two fluorescent probes at site-I of human serum albumin: The protein acting as a scaffold enabling fluorescence resonance energy transfer
Ximenes, Valdecir Farias
(Journal of Photochemistry and Photobiology B: Biology, 2022) [Artigo]
Human serum albumin (HSA) is the primary drug carrier in the blood plasma. Here, I aimed to show that two ligands can be accommodated simultaneously in the binding site-I of HSA. To do so, I studied the interaction inside ... -
Development of fluorescent azapentalenes to study the reactivity of hypochlorous acid and chloramines in micellar systems
Pavan, Nathália Mariana; Martins, Lucas Michelão ; Augusto, Laís Cristina ; da Silva-Filho, Luiz Carlos ; Ximenes, Valdecir Farias (Journal of Molecular Liquids, 2022) [Artigo]
Hypochlorous acid (HClO) is an endogenous reactive oxygen species generated by the oxidation of chloride catalyzed by myeloperoxidase (MPO). This enzyme is abundant in polymorphonuclear cells and involved in the human ... -
Antioxidant and antiglycation activities and inhibitory action of Passiflora cincinnata on collagenase, elastase and tyrosinase: in vitro and in silico study
da Costa Gomes, Amanda; Figueiredo, Célia Cristina Malaguti ; Granero, Filipe Oliveira ; Junior, João Luiz Bronzel ; Ximenes, Valdecir Farias ; ; ; da Silva, Regildo Márcio Gonçalves (Biocatalysis and Agricultural Biotechnology, 2022) [Artigo]
Passiflora species are widely used in folk medicine due to their sedative and anxiolytic activities; however, scientific studies also showed different biological activities (antioxidant, anti-inflammatory, antidiabetic and ... -
Antiglycation, antioxidant and cytotoxicity activities of crude extract of Turnera ulmifolia L. before and after microencapsulation process
Viel, Amanda Martins; Figueiredo, Célia Cristina Malaguti ; Granero, Filipe Oliveira ; ; Ximenes, Valdecir Farias ; ; ; Silva, Regildo Márcio Gonçalves da (Journal of Pharmaceutical and Biomedical Analysis, 2022) [Artigo]
Turnera ulmifolia L. is used in folk medicine and it is known to have anti-hyperglycemic effect on the organism in order to reduce complications in diabetic patients. Glycation process is directly related to oxidative ... -
Development of renewable thermosetting polymers based on grape seed oil derivatives
Gaglieri, Caroline; Alarcon, Rafael Turra ; Magri, Raquel ; ; Bannach, Gilbert (Journal of Applied Polymer Science, 2022) [Artigo]
The demand for polymeric materials increases year by year, and most of them are derived from nonrenewable sources, and their consume has been increasing year by year. Therefore, there is a demand for research on bioderived ... -
MICROLEARNING AS A TOOL FOR SCIENTIFIC DISSEMINATION: THERMAL ANALYSIS OF THE PORTUGUESE GOOD LUCK ROOSTER
Magri, Raquel; Gaglieri, Caroline ; Alarcon, Rafael Turra ; de Souza, Aguinaldo Robinson ; Bannach, Gilbert (Quimica Nova, 2022) [Artigo]
This work aims to produce and disseminate videos that follow the microlearning methodology, to explain the physicochemical properties of cobalt (II) chloride hexahydrate through thermal analysis, and to determine the ... -
Study of simultaneous adsorption efficiency of metals using modifiorganic and synthetic adsorbents
Leandro-Silva, Emerson; ; Magdalena, Aroldo Geraldo ; Piacenti-Silva, Marina (Revista Materia, 2022) [Artigo]
Water contamination by heavy metals represents a high risk of environmental pollution and a precursor of several human diseases. The presence of these metals at high levels in wastewater treatment plants and industrial ... -
Creative Learning, Computational Thinking, and Robotics in Elementary Education
; ; Barros, Daniela Melare Vieira; Souza, Aguinaldo Robinson de (Dialogia, 2022) [Editorial]
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Nicotine as a Catalyst for Chlorination Promoted by Hypochlorous Acid: Experimental and Theoretical Studies
Ximenes, Valdecir F.; Pavan, Nathalia M. ; Souza, Aguinaldo R. de ; ; (Journal Of The Brazilian Chemical Society, 2022) [Artigo]
There is robust evidence of the hypochlorous acid (HClO)-mediated damage in biomolecules, and nicotine boosts the chlorination potency of HClO. We present experimental and theoretical evidence of the mechanism by which ... -
The Influence of Thermomechanical Treatments on the Structure, Microstructure, and Mechanical Properties of Ti-5Mn-Mo Alloys
Lourenço, Mariana Luna; Pontes, Fenelon Martinho Lima ; Grandini, Carlos Roberto (Metals, 2022) [Artigo]
With the increase in the world’s population, the rising number of traffic accidents, and the increase in life expectancy, the need for implants, dental work, and orthopedics is growing ever larger. Researchers are working ... -
Thermal behavior of some cyclic anhydrides: an important characterization for synthesis in the polymer field
Gaglieri, Caroline; de Moura, Aniele ; Alarcon, Rafael T. ; Magri, Raquel ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2022) [Artigo]
Polyfunctional cyclic organic anhydrides are widely used in different fields, especially in monomer synthesis and therefore polymers applications. However, there is a lack in the literature about their thermal and spectroscopic ... -
Physical, functional and biochemical features of Nanoskin® bacterial cellulose scaffold as a potential carrier for cell transference
Viveiros, Magda Massae Hata; Rainho, Cláudia Aparecida ; Ramirez, Jofer Andree Zamame ; Kaneno, Ramon ; Silva, Márcia Guimarães ; Ximenes, Valdecir Farias ; ; ; ; Schellini, Silvana Artioli (Materials Letters, 2022) [Artigo]
We evaluated the feasibility of Nanoskin®, a bacterial cellulose (BC) nanofiber membrane, as a potential scaffold for cell transference therapy. Nanoskin® does not induce lymphocyte proliferation, but it does not kill ... -
Thermoanalytical study of purine derivatives compounds
; ; ; Bannach, G.; Ionashiro, M. (Ecletica Quimica, 2004) [Artigo]
Thermal methods of analysis are now used in a very large range of scientific investigations. In this work simultaneous thermogravimetry-differential thermal analysis (TG-DTA), X-Ray powder diffractometry and infrared ... -
A new acrylated monomer from macaw vegetable oil that polymerizes without external photoinitiators
Alarcon, Rafael T.; Gaglieri, Caroline ; ; ; ; Bannach, Gilbert (Journal of Polymer Research, 2021) [Artigo]
The photopolymerization process has been widely studied due to its use in painting/coating, dentistry, creating photoresist materials and more recently in 3D printing. Therefore, new monomers have been synthesized to be ... -
Thermal stability and thermal decomposition of sucralose
Bannach, Gilbert; ; ; ; Ionashiro, Massao (Ecletica Quimica, 2009) [Artigo]
Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and ... -
Effect of titanium addition on the structure, microstructure, and selected mechanical properties of as-cast Zr-25Ta-xTi alloys
; Pedroso, Barbara Letícia Tomaz; Pontes, Fenelon Martinho Lima ; Grandini, Carlos Roberto (Metals, 2021) [Artigo]
Ti alloys are the most used metallic materials in the biomedical field due to their excellent biocompatibility associated with good corrosion resistance in body fluids and relatively low elastic modulus. However, the alloys ... -
AIE Effect by Oxygen Clustering in Vegetable Oil-Based Polymers
Alarcon, Rafael T.; Gaglieri, Caroline ; dos Santos, Giovanny C. ; ; ; de Souza, Aguinaldo R. ; Bannach, Gilbert (ChemistrySelect, 2021) [Artigo]
Vegetable oil has been widely used to synthesize monomers and polymers in different fields. Some authors have found different polymers in maleinized vegetable oil; however, they have not described the luminescent properties ... -
Epoxidation reaction in promising Brazilian biomass: decreased time and catalyst loading to produce renewable monomers
Magri, Raquel; Gaglieri, Caroline ; Alarcon, Rafael T. ; Bannach, Gilbert (Journal of Polymer Research, 2021) [Artigo]
The syntheses of new materials using vegetable oils have increased due to technological interest and low environmental impact. Baru nut provides baru oil, rich in linoleic and oleic fatty acids that can be modified into ... -
Rare-earth complexes with anti-inflammatory drug sulindac: Synthesis, characterization, spectroscopic and in vitro biological studies
Barrach Guerra, Renan; ; Fernanda de Campos Fraga-Silva, Thais ; Aguiar, Julia ; Venturini, James ; Bannach, Gilbert (Inorganica Chimica Acta, 2021) [Artigo]
New rare-earth complexes with the general formula [LnIII(sul)3]∙nH2O, where sul− is the anti-inflammatory drug sulindac and Ln3+ = Ce3+, Pr3+, Gd3+, Tb3+, and Ho3+, were synthesized, characterized, and had their cytotoxic ... -
Experimental studies and computational modeling on cytochrome c reduction by quercetin: The role of oxidability and binding affinity
Zazeri, Gabriel; Povinelli, Ana Paula Ribeiro ; Pavan, Nathalia M. ; ; ; Ximenes, Valdecir Farias (Journal of Molecular Structure, 2021) [Artigo]
Quercetin is a potent reducing agent of cytochrome C (Cyt c). Cyt c plays a fundamental role in the intrinsic apoptotic pathway, and there is evidence of the quercetin's role in this cellular event, which is involved in ...