35 documents found, page 1 of 4
Potential protective role of amphibian skin bacteria against water mold saprole...
Costa, Sara; Proença, Diogo Neves; Alves, Artur; Morais, Paula V.; Lopes, IsabelAmphibian populations have experienced a severe decline over the past 40 years, driven primarily by environmental pollution, habitat destruction, climate change, and disease. This work reports, for the first time, saprolegniosis in Pelophylax perezi egg masses and saprolegniosis in amphibians in Portugal. After isolation and phylogenetic analysis, the pathogen was identified as Saprolegnia australis. Following ...
The effect of biopolymer stabilisation on biostimulated or bioaugmented mine re...
Caldeira, Joana B.; Correia, António A. S.; Branco, Rita; Morais, Paula V.Mine waste can be transformed into technosol as an ecological strategy. Despite its importance to soil functions, biological activity is often overlooked. Biopolymers can serve as innovative tools for bioremediation, facilitating chemical reactions and creating networks to encapsulate contaminants. This work aims to assess the use of bioleached and stabilised residues from a tungsten mine for technosol producti...
Assessment of antimicrobial resistance, biofilm formation, and surface modifica...
Lordelo, Roberta; Branco, Rita; Gama, Fernando; Morais, Paula V.The occurrence of healthcare-associated infections is a multifactorial phenomenon related to hospital space contamination by bacteria. The ESKAPE group, specifically Pseudomonas aeruginosa and Klebsiella pneumoniae, play a relevant role in the occurrence of these infections. Therefore, comprehensive research is needed to identify characteristics that justify the prevalence of these species in the healthcare env...
The Role of Bacterial Polyhydroalkanoate (PHA) in a Sustainable Future: A Revie...
Vicente, Diogo; Proença, Diogo Neves; Morais, Paula V.Environmental challenges related to the mismanagement of plastic waste became even more evident during the COVID-19 pandemic. The need for new solutions regarding the use of plastics came to the forefront again. Polyhydroxyalkanoates (PHA) have demonstrated their ability to replace conventional plastics, especially in packaging. Its biodegradability and biocompatibility makes this material a sustainable solutio...
Bioactive surfaces with well-defined amphiphilic copolymers containing a natura...
Pereira, Vanessa A.; Mendonça, Patrícia V.; Branco, Rita; Morais, Paula V.; Coelho, Jorge F. J.; Serra, ArménioNew amphiphilic cationic copolymers based on poly((methacryloyloxy) ethyl trimethylammonium chloride) (PMETAC) and bio-based poly(thymol methacrylate) (PTMA) were prepared by atom transfer radical polymerization (ATRP) methods, using low concentration of metal catalyst and a bio-based eutectic mixture (EM), composed of L-menthol and thymol. The antimicrobial activity of the polymers was evaluated against Gram-p...
An Opinion on the Removal of Disinfection Byproducts from Drinking Water
Roque, Maria Inês; Gomes, João; Reva, Igor; Valente, Artur J. M.; Simões, Nuno E.; Morais, Paula V.; Durães, Luisa; Martins, Rui C.Ensuring drinking water quality is a key factor for public health and it is especially important given the increase in industrialization. Its quality is ensured by a water treatment process that includes a disinfection stage, mainly involving chlorination. However, by applying this disinfection method, unwanted disinfection byproducts (DBPs) are formed. These compounds have, in general, a negative impact on hum...
Enhancing the Strength of Mine Residue Soil by Bioremediation Combined with Bio...
Correia, António A. S.; Caldeira, Joana B.; Branco, Rita; Morais, Paula V.Traditional soil stabilization methods are usually associated with high energy consumption, carbon emissions, and long-term environmental impact. Recent developments have shown the potential use of bio-based techniques as eco-friendly alternatives for soil stabilization. The present work studies the effects of the addition of the biopolymers xanthan gum (XG) or carboxymethyl cellulose (CMC) to a mine residue so...
Application of an Ultrasonic Nebulizer Closet in the Disinfection of Textiles a...
Henriques, Tiago M.; Rito, Beatriz; Proença, Diogo N.; Morais, Paula V.The emergence of the coronavirus disease 2019 (COVID-19) pandemic highlighted the importance of disinfection processes in health safety. Textiles and footwear have been identified as vectors for spreading infections. Therefore, their disinfection can be crucial to controlling pathogens' dissemination. The present work aimed to evaluate the effectiveness of a commercial disinfectant aerosolized by an ultrasonic ...
The Role of Serratomolide-like Amino Lipids Produced by Bacteria of Genus Serra...
Marques-Pereira, Catarina; Proença, Diogo Neves; Morais, Paula V.Bursaphelenchus xylophilus, also known as pinewood nematode (PWN), is the pathogenic agent of pine wilt disease (PWD), which affects pine trees around the world. Infection spread globally through international wood commerce and locally by vector beetles, threatening the wood world economy. As climate changes, more countries are becoming susceptible to PWD and, to prevent disease spread and limit economic and ec...
Relevance of FeoAB system in Rhodanobacter sp. B2A1Ga4 resistance to heavy meta...
Caldeira, Joana B.; Chung, Ana Paula; Morais, Paula V.; Branco, RitaAluminium (Al), gallium (Ga), and indium (In) are metals widely used in diverse applications in industry, which consequently result in a source of environmental contamination. In this study, strain Rhodanobacter sp. B2A1Ga4, highly resistant to Al, Ga, and In, was studied to reveal the main effects of these metals on the strain and the bacterial mechanisms linked to the ability to cope with them. An indium-sens...