100 documents found, page 1 of 10
What goes around comes around: applying the food circularity index to chickpea ...
Silva, Beatriz; Guo, Xiaoai; Aganovic, Kemal; Vasconcelos, Marta; Smetana, SergiyThe global food system faces mounting challenges related to sustainability, resource efficiency, and waste management. While circular economy principles have been widely adopted in manufacturing and energy sectors, their implementation in food systems remains fragmented and underdeveloped. This study introduces the Food Circularity Index (FCI), a novel framework to quantify nutrient circularity within the food ...
Vesicoperineal Fistula: A Rare Rectal Cancer Treatment Complication
Moreira, Luísa; Margarida, André; Vasconcelos, Marta; Garção, Nunes; Luz, CarlosA vesicoperineal fistula is an uncommon entity, described as an aberrant tract between the bladder lumen and the cutaneous surface of the perineum. We present the case of a 78-year-old male who underwent abdominoperineal resection and chemoradiotherapy for the treatment of non-metastatic, locally advanced rectal cancer. Five years later, he developed a pelvic floor hernia and underwent perineal mesh repair. A f...
Lignin from grape stalks: nanoparticle production through sonication
Cassoni, Ana C.; Bourbon, Ana Isabel Juncá Sottomayor Lisboa; Vasconcelos, Marta; Pintado, ManuelaLignin nanoparticles represent an emerging class of sustainable nanomaterials that can improve the valorisation of this abundant biopolymer through new applications [1 ]. This study focused on optimizing the production of lignin nanoparticles through sonication, using minimal amount of chemicals possible, while achieving small particle size and maintaining colloidal stability.
Novel polymeric nanoparticles as nanofertilisers for alkaline iron‐deficient co...
Pinho, Simão; Santos, Carla; Moniz, Tânia; Granja, Andreia; Sarraguça, Mafalda; Reis, Salette; Rangel, Maria; Vasconcelos, MartaBackground and aims Iron deficiency chlorosis (IDC) is a nutritional disorder impacting plants and is prevalent in calcareous alkaline soils, correspond- ing to 30% of the world’s arable land. IDC compro- mises iron uptake in crops such as soybean (Glycine max). To improve the effect of iron fertilisers, we sought to develop a nanotechnology-based interven- tion using polymeric nanoparticles (NPs) loaded with F...
From grape stalks to lignin nanoparticles: a study on extraction scale-up, solu...
Cassoni, Ana C.; Bourbon, Ana I.; Pastrana, Lorenzo; Vasconcelos, Marta; Pintado, ManuelaTo effectively valorize lignin, some challenges must be addressed. First, emerging techniques based on green methods may experience difficulties during the scale-up process. Secondly, the low solubility of lignin can hinder further valorization. This study investigated the impact of lignin extraction scale-up on yield and purity and evaluated strategies to enhance lignin solubility. Lignin from grape stalks was...
Mass tourism, cultural heritage, and traditional values within citizen lifestyl...
Vieira, Eduarda; Pelaez, Ana; Rosa, Inês; Lemos, Teresa; Bordalo, Rui; Vasconcelos, Marta; Moreira, PatríciaPorto has a rich urban mesh and unique cultural identity, whose preservation has been the basis of its historic centre classification as a World Heritage Site by UNESCO (1996). The increase in demand of Porto as a tourism destination since 2015 was simultaneously favoured by the opening of Porto’s airport new terminal that greatly powered low-cost companies and the licensing for the rehabilitation of houses for...
Synergistic effect of nickel and melatonin on drought tolerance in pea (pisum s...
Spoloar, Bruna Oliveira Reinheimer; Silva, Marta Nunes da; Geraldo, Rafaela; Moro, Adriana Lima; Vasconcelos, MartaIntroduction: The intensification of drought events due to climate change threatens global food security. Pea (Pisum sativum) is a key legume for sustainable agriculture, as it fixes nitrogen, improves soil fertility, and has high nutritional value. However, it is highly sensitive to water stress. Nickel (Ni) is an essential micronutrient in nitrogen metabolism, while melatonin (MEL) regulates oxidative stress....
Integrating ecosystem services provided by legumes in agricultural life cycle a...
Cimarelli, Stefano; Goglio, Pietro; Serpa, Dalila; Quagliolo, Carlotta; Dorca-Preda, Teodora; Sadhu, Abbigel; Rai, Kamala; Roebeling, PeterAgricultural production is endangering agroecosystems health and functioning, compromising the delivery of many ecosystem services (ES) to prioritize provisioning. Legumes’ inclusion in cropping systems appears as a promising solution towards the ecological intensification of agriculture in Europe, providing a multiplicity of ES. Agricultural Life Cycle Assessment (LCA) does not explicitly assess ES; however, t...
Comparative assessment of solid and dissolved lignin from grape stalks for anti...
Cassoni, Ana C.; Cunha, Sara A.; Vasconcelos, Marta; Pintado, ManuelaIntroduction: The valorization of agricultural wastes through the extraction of bioactive compounds represents a promising approach in sustainable biotechnology. Among these compounds, lignin is abundant but underutilized, despite recent efforts aimed at its valorization. One of the promising characteristics of lignin is its antibacterial capacity. Therefore, this study investigated the antibacterial properties...
Lignin from grape stalks: nanoparticle production through sonication
Cassoni , Ana C.; Bourbon, Ana I.; Vasconcelos, Marta; Pintado, ManuelaLignin nanoparticles represent an emerging class of sustainable nanomaterials that can improve the valorisation of this abundant biopolymer through new applications [1]. This study focused on optimizing the production of lignin nanoparticles through sonication, using minimal amount of chemicals possible, while achieving small particle size and maintaining colloidal stability.