7 documents found, page 1 of 1
Beta-carotene-loaded Oleogels: Morphological analysis, cytotoxicity assessment,...
Martins, Artur J.; Perdigão, Lara; Gonçalves, Catarina; Amado, Isabel R.; Abreu, Cristiano S.; Vicente, A. A.; Cunha, Rosiane L.; Pastrana, Lorenzo M.Composition and structure of oleogels significantly influence their digestive behaviour, impacting triacylglycerol breakdown and the bioavailability of incorporated compounds. Texture profile analysis showed that sterol-based oleogels (STOs) exhibited 20 times higher hardness than beeswax-based oleogels (BWOs), which showed stronger cohesion due to elasticity sustained by adhesive forces. Tribological assessmen...
Friction characteristics of doublewall carbon nanotube-based nanobearings: a co...
Abreu, Cristiano S.; Gomes, J. R.A convergence in scientific advancements associated with molecular biology and nanofabrication technologies now offers the potential of engineering functional hybrid organic/inorganic devices on a nanometer scale. As such, the creation of nanomechanical systems powered by biological motors is within reach. Doublewall carbon nanotubes (DWCNT) offer great potential as nanobearings due intrinsically atomically smo...
Incorporation of curcumin-loaded solid lipid nanoparticles into yogurt:Tribo-rh...
Gonçalves, Raquel Filipa Silva; Fernandes, Jean Michel; Martins, Joana T.; Vieira, Jorge Miguel Magalhães; Abreu, Cristiano S.; Gomes, José R.The incorporation of nanostructures loaded with bioactive compounds into food matrices is a promising approach to develop new functional foods with improved nutritional, health profiles and good sensorial properties. The rheological and tribological properties of yogurt enriched with curcumin-loaded solid lipid nanoparticles (SLN) were evaluated. Also, the TCA solubility index, the bioaccessibility of curcumin ...
Numerical model validation of the blood flow through a microchannel hyperbolic ...
Barbosa, Filipe; Dueñas-Pamplona, Jorge; Abreu, Cristiano S.; Oliveira, Mónica S. N.; Lima, Rui Alberto Madeira MacedoA computational fluid dynamics (CFD) model of blood flow through hyperbolic contraction with a discrete phase model (DPM) was experimentally validated. For this purpose, the positions and velocities of red blood cells (RBCs) flowing in a microchannel with hyperbolic contraction were experimentally assessed using image analysis techniques, and were subsequently compared with the numerical results. The numericall...
Numerical flows studies in a hyperbolic microchannel for biomedical applications
Barbosa, Filipe Manuel Sá; Abreu, Cristiano S.; Oliveira, Mónica S. N.; Lima, Rui Alberto Madeira Macedo; Minas, GraçaMesh-based numerical methods have several limitations to simulate biofluids at a micro scale level, as they do not represent the multiphase component of them. In contrast, atomistic methods have the ability to simulate fluids with more than one phase, where the mesh is replaced by interacting particles. The LAMMPS code is a classical method of the molecular dynamics simulation, frequently used to assess the flo...
Sensorial perception of astringency: oral mechanisms and current analysis methods
Pires, Mariana A.; Pastrana, Lorenzo M.; Fuciños, Pablo; Abreu, Cristiano S.; Oliveira, Sara M.Understanding consumers’ food choices and the psychological processes involved in their preferences is crucial to promote more mindful eating regulation and guide food design. Fortifying foods minimizing the oral dryness, rough, and puckering associated with many functional ingredients has been attracting interest in understanding oral astringency over the years. A variety of studies have explored the sensorial...
Electrically conductive polyetheretherketone nanocomposite filaments: from prod...
Gonçalves, Jordana Catarina Carvalho; Lima, Patrícia; Krause, Beate; Pötschke, Petra; Lafont, Ugo; Gomes, José R.; Abreu, Cristiano S.; Paiva, M. C.The present work reports the production and characterization of polyetheretherketone (PEEK) nanocomposite filaments incorporating carbon nanotubes (CNT) and graphite nanoplates (GnP), electrically conductive and suitable for fused deposition modeling (FDM) processing. The nanocomposites were manufactured by melt mixing and those presenting electrical conductivity near 10 S/m were selected for the production of ...