112 documents found, page 1 of 12
Unlocking the Potential of Hydrosols: Transforming Essential Oil Byproducts int...
Almeida, Heloísa H.S.; Fernandes, Isabel P.; Amaral, Joana S.; Rodrigues, Alírio; Barreiro, M.F.The global demand for sustainable and non-toxic alternatives across various industries is driving the exploration of naturally derived solutions. Hydrosols, also known as hydrolates, represent a promising yet underutilised byproduct of the extraction process of essential oils (EOs). These aqueous solutions contain a complex mixture of EO traces and water-soluble compounds and exhibit significant biological acti...
Chemical and bioactive screening of green polyphenol-rich extracts from chestnu...
Rodrigues, Daniele Bobrowski; Verissimo, Lavinia; Finimundy, Tiane C.; Rodrigues, Joana P.B.; Oliveira, Izamara; Fernandes, Isabel P.; Barros, LillianOpportunities for the valorisation of agro-industrial residues of the chestnut (Castanea sativa Mill.) production chain have been fostered with the production of multifunctional polyphenol-rich extracts with the potential to be introduced as natural additives or active components in several products. Nonetheless, it is crucial to explore the feasibility of different extracts from the various by-products for the...
Polyphenol composition by HPLC-DAD-(ESI-)MS/MS and bioactivities of extracts fr...
Ueda, Jonata Massao; Griebler, Karoline Ribeiro; Finimundy, Tiane C.; Rodrigues, Daniele Bobrowski; Verissimo, Lavinia; Pires, Tânia C.S.P.Grape agri-food wastes, such as skin, seeds, and other discarded by-products, contain phytochemical compounds that offer potential health benefits. Methods: This study aimed to investigate the polyphenol composition and bioactivities of different extracts obtained from grape marc and seeds, with the goal of exploring their potential for application as natural food additives. Results: Regardless of the extractio...
Water-in-oil-in-water double emulsions as protective carriers for Sambucus nigr...
Teixeira, Liandra Gracher; Rezende, Stephany; Fernandes, Ângela; Fernandes, Isabel P.; Barros, Lillian; Barreira, João C.M.; Leimann, Fernanda VitóriaThe use of natural colorants is needed to overcome consumer concerns regarding synthetic food colorants0 safety. However, natural pigments have, in general, poor stability against environmental stresses such as temperature, ionic strength, moisture, light, and pH, among others. In this work, water-in-oil-in-water (W1/O/W2) emulsions were used as protective carriers to improve color stability of a hydrophilic Sa...
Advances in waterborne polyurethane and polyurethane-urea dispersions and their...
Santamaria-Echart, Arantzazu; Fernandes, Isabel P.; Barreiro, M.F.; Corcuera, Maria Angeles; Eceiza, ArantaxaPolyurethanes and polyurethane-ureas, particularly their water-based dispersions, have gained relevance as an extremely versatile area based on environmentally friendly approaches. The evolution of their synthesis methods, and the nature of the reactants (or compounds involved in the process) towards increasingly sustainable pathways, has positioned these dispersions as a relevant and essential product for dive...
Valorization of lignin side-streams into polyols and rigid polyurethane foams—a...
Pinto, João A.; Fernandes, Isabel P.; Pinto, Virgínia; Gomes, Elson; Oliveira, Cátia F.; Pinto, Paula C.R.; Mesquita, L.M.R.; Piloto, P.A.G.Valorization of industrial low-value side-streams are of great interest, contributing to boosts in the circular economy. In this context, lignin side-streams of the pulp and paper industry were oxypropylated to produce biobased polyols and tested in the synthesis of rigid polyurethane (RPU) foams. E. globulus lignins, namely a lignin isolated from an industrial Kraft black liquor and depolymerized lignins obtai...
β-Carotene colouring systems based on solid lipid particles produced by hot mel...
Carvalho, Amarilis Santos; Rezende, Stephany; Caleja, Cristina; Pereira, Eliana; Barros, Lillian; Fernandes, Isabel P.; Manrique, Yaidelin A.In this work, β-carotene was selected to develop a novel study, namely a food colorant system based on beeswax solid lipid particles obtained by hot melt dispersion. The obtained microparticles were characterized by optical microscopy, scanning electron microscopy, particle size analysis and Fourier Transform Infrared spectroscopy. It was observed that the obtained size can be modulated by using different amoun...
Development of chitosan microspheres through a green dual crosslinking strategy...
Correa, Rodolpho Fagundes; Colucci, Giovana; Halla, Noureddine; Pinto, João A.; Santamaria-Echart, Arantzazu; Blanco, Silvia PriscilaMicroencapsulation procedures have recently focused attention on designing novel mi-crospheres via green synthesis strategies. The use of chitosan (CS) as an encapsulating material has increased interest due to its unique bioactive properties and the various crosslinking possibilities offered by their functional groups. The consolidation of the microspheres by physical crosslinking using sodium tripolyphosphate...
Evaluation of saponin-rich extracts as natural alternative emulsifiers: A compa...
Schreiner, Tatiana B.; Colucci, Giovana; Santamaria-Echart, Arantzazu; Fernandes, Isabel P.; Dias, Madalena M.; Pinho, Simão; Barreiro, M.F.Due to synthetic surfactants' environmental impact, their replacement by natural alternatives has gained relevance, with saponins emerging as sustainable approaches. In this work, three saponin-rich extracts from different sources (Tribulus terrestris (TT), Trigonella foenum-graecum (FG), and Ruscus aculeatus (RA)) were tested as emulsifiers, and their performance compared with Quillaja Bark saponin (PS). Chara...
Lipid composition optimization in spray congealing technique and testing with c...
Sorita, Guilherme Dallarmi; Santamaria-Echart, Arantzazu; Gozzo, Ângela Maria; Gonçalves, Odinei Hess; Leimann, Fernanda Vitória; Bona, EvandroSpray-congealing, a technique based on the fast solidification of sprayed molten lipids, is considered a novel strategy to encapsulate natural products. Among others, it is a safe, low cost, fast and reproducible technique, with rising interest for several applications (e.g. food applications). One of the key parameters for the application of this technique is the lipid solidification temperature, which can be ...