281 documents found, page 1 of 29
Exploring bio-based alternatives to cyclopentasiloxane: paving the way to promi...
Castro, Mariana; Roque, Catarina; Loureiro, Ana Isabel Sá; Guimarães, Diana Isabel Pereira; Silva, C.; Ribeiro, Artur; Cavaco-Paulo, ArturIn recent years, significant efforts have been made to identify suitable alternatives for silicones commonly used in daily cosmetic products. However, green alternatives have faced challenges in replicating the unique properties of silicone-based formulations, particularly cyclopentasiloxane, which continues to be widely used.This study explores the potential of six biosynthesized esters (heptyl heptanoate, hep...
NADES-in-Oil Emulsions Enriched with Essential Oils for Cosmetic Application
Freitas, David; Rocha, Diana; Santos, Joana; Noro, Jennifer Martins; Tavares, Tânia D.; Teixeira, Marta O.; Araújo, Daniela; Castro, Joana Isabel ReisThis research aims to explore the potential benefits of natural deep eutectic solvents (NADES) in formulating translucent NADES-in-oil emulsions (TEs) containing essential oils (EOs) for cosmetic applications. The TEs investigated in this study are based on previous formulations, consisting of 50 wt.% egg phosphatidylcholine (EPC), 20 wt.% ethanol, 20 wt.% olive oil (OlO), thyme oil (TO), or oregano oil (OrO), ...
Pioneering wound care solutions: triaxial wet-spun fibers with bioactive agents...
Miranda, Catarina Alexandra Fortuna Santos; Marinho, Elina Margarida Ribeiro; Rocha, Diana; Silva, C.; Silva, Maria Manuela; Schlapp-Hackl, IngeFiber-based constructs have been produced as an alternative to conventional dressings for the treatment of chronic wounds (CWs), showing good tenability, high surface area and regulable porosity. A commonly used technique for processing such dressings is wet-spinning, which involves precipitating a polymer solution into a coagulation bath containing a non-solvent of that polymer. This process produces fibers wi...
Lyocell/silver knitted fabrics for prospective diabetic foot ulcers treatment: ...
Tavares, Tânia Daniela Eugénio; Ribeiro, Artur; Bengoechea, Carlos; Rocha, Diana; Alcudia, Ana; Begines, Belén; Silva, C.; Antunes, Joana Isabel CostaDiabetic foot ulcers (DFUs) are a serious complication of diabetes, often resulting in infections and further health deterioration. Thus, the development of an approach combining different therapies in just one formulation to treat DFUs remains very challenging. Silver-plated polyamide fibers offer antimicrobial properties, while lyocell provides biodegradability, biocompatibility and moisture management abilit...
Biosynthesis of new amphiphilic esters with emulsifying properties for long-ter...
Roque, Catarina; Castro, Mariana; Castro, Tarsila Gabriel; Ribeiro, Artur; Silva, C.; Cavaco-Paulo, Artur; Noro, Jennifer MartinsIn this work, several amphiphilic compounds were successfully synthesized via lipase-catalysis: 2-(2-ethoxyethoxy)ethyloctanoate, 2-(2-ethoxyethoxy)ethyldecanoate, 2-(2-ethoxyethoxy)ethylpalmitate, (2-(2-ethoxyethoxy)ethyloleate) and (2-(2-ethoxyethoxy)ethyllinoleate). The reactions were carried out using octanoic acid, decanoic acid, palmitic acid, oleic acid, and linoleic acid, as the aliphatic compounds, and...
Novel textile dyeing process: The use of natural deep eutectic solvents (NADES)
Vieira, Bárbara Marques; Silva, Carla Manuela Costa; Silva, C.; Zille, Andrea[Excerpt] Textile dyeing is recognized for its substantial environmental impact [1, 2]. In response to this challenge, there is an increasing focus on eco-friendly alternatives, including the use of natural dyes derived from plants that not only provide coloration, but also impart unique functional properties to textiles[3]. However, these types of dyes typically exhibit poor color fastness when exposed to wash...
The Inclusion of Young People with Muscular Dystrophies and Other Rare Diseases...
Romo, M.; Alonso, C.; García, B.; Artur, A.; Silva, C.; Marmeleira, J.; Saragoça, J.; Casanova, R.This methodological guide aims to assist schools and teachers in including students with rare diseases into their classrooms, regardless of the stage of their condition. The objective of this guide is not only to provide information about the disease and the possible symptoms that these persons may experience, but also to provide methodological guidelines, curriculum adaptations, and evaluation mechanisms adapt...
We are on the road to somewhere: How deliberate practice can enhance the path o...
Barata, M.; Santos, J. M.; Sousa, D.; Silva, C.; Alface, C.; Coelho, P.The first study aimed to evaluate the impact of deliberate practice (DP) training during the 2 and 3 years of a bilingual clinical existential therapy program. The evaluation focused on its influence on facilitative interpersonal skills (FIS), as perceived by 14 participants and assessed by three independent raters. The second study explored the subjective experiences of 12 participants, with particular emphasi...
Mycotoxins in plant-based beverages: a study on occurrence in the Brazilian market
Kerstner, Francine; Oliveira, Crislei Ferreira de; Venâncio, Armando; Silva, C.; Buffon, Jaqueline GardaPlant-based beverages have become increasingly popular due to their health and sustainability appeal. However, raw plant-based ingredients are often associated with mycotoxin contamination. This study aimed to assess the presence of six mycotoxins aflatoxin B1, deoxynivalenol, 3-acetyldeoxynivalenol, 15-acetyldeoxynivalenol, ochratoxin A and zearalenone in plant-based beverages available on the Brazilian market...
Enzymatic degradation of ochratoxin A: the role of ultra-pure water
Santos, Joana; Oliveira, Constança; Teixeira, Filipe; Venâncio, Armando; Silva, C.Ochratoxin A (OTA) is a toxic mycotoxin, making its removal from food essential for public health. This study examines OTA degradation by porcine pancreatic lipase (PPL) in ultra-pure water versus buffer systems through in vitro assays and molecular modeling. The results show that PPL fully degrades OTA in ultra-pure water within 7 h at 44 °C, whereas only partial degradation occurs in phosphate buffer. After 4...