497 documents found, page 1 of 50
Optimization of heat and ultrasound-assisted extraction of Eucalyptus globulus ...
Lima, Laíres; Pereira, Ana I.; Vaz, Clara B.; Ferreira, Olga; Dias, Maria Inês; Heleno, Sandrina A.; Calhelha, Ricardo C.; Barros, LillianThe extraction of phenolic compounds from eucalyptus leaves was optimized using heat and ultrasound-assisted techniques, and the bioactive potential of the resulting extract was assessed. The independent variables, including time (t), solvent concentration (S), and temperature (T) or power (P), were incorporated into a fivelevel central composite design combined with Response Surface Methodology. Phenolic conte...
Nutrients, Phytochemicals, and In Vitro Biological Activities of Goldenberry (P...
Añibarro-Ortega, Mikel; Dias, Maria Inês; Petrović, Jovana; Mandim, Filipa; Núñez, Sonia; Soković, Marina; López, Víctor; Barros, Lillian; Pinela, JoséThis study provides a comprehensive characterization of Physalis peruviana L., covering the nutritional composition of the fruit and the phytochemical profiles and in vitro bioactive properties of berry and calyx extracts. The fresh fruit stood out as a source of dietary fiber (5.16 g/100 g) and is low in fat (0.49 g/100 g). A 100-g serving also contained notable amounts of ascorbic acid (32.0 mg), tocopherols ...
Chemical Characterization and Differential Lipid-Modulating Effects of Selected...
Amorim, Ricardo; Marques, Mário Pedro; Melim, Catarina; Varela, Carla; Sardão, Vilma A.; Teixeira, José; Dias, Maria Inês; Barros, LillianCôa Valley, located in the northeast of Portugal, harbors more than 500 medicinal plant species. Among them, four species stand out due to their traditional uses: Equisetum ramosissimum Desf. (hemorrhages, urethritis, hepatitis), Rumex scutatus L. subsp. induratus (Boiss. and Reut.) Malag. (inflammation, constipation), Geranium purpureum Vill., and Geranium lucidum L. (pain relief, gastric issues). Given their ...
Valorisation of pumpkin by-products: Chemical composition and bioactive propert...
Leichtweis, Maria G.; Molina, Adriana K.; Dias, Maria Inês; Calhelha, Ricardo C.; Pires, Tânia C.S.P.; Pavli, Ourania; Oliveira, BeatrizThis study evaluated the fruit by-products (peels, seeds, and fibrous strands) from 11 pumpkin genotypes cultivated in Greece aiming to valorize them as natural sources of bioactive compounds. Five compounds, including ( )-epicatechin and chicoric acid isomers, were identified in peels, while seeds and fibrous strands mainly contained ( )-epicatechin. Organic acids and tocopherols varied significantly among gen...
Application of encapsulated tomato by-product extract as a colorant in mascarpone
Molina, Adriana K.; Leichtweis, Maria G.; Machado, Manuela; Silva, Sara; Pintado, Manuela; Barreira, João C. M.; Dias, Maria Inês; Prieto, Miguel Á.Agricultural by-products, often underutilized, represent a significant opportunity to obtain sustainable value-added products to develop new functional foods. In this context, the (typically discarded) aerial parts of tomato plants (Solanum lycopersicum L. var. cerasiforme), were studied as new sources of natural bioactive compounds, focusing the extraction and encapsulation (using spray drying with maltodextri...
Valorization of Solanum melongena L. crop by-products: phenolic composition and...
Añibarro-Ortega, Mikel; Dias, Maria Inês; Petrović, Jovana; Núñez, Sonia; Calhelha, Ricardo C.; Costa, Eduardo M.; Machado, M.; Pintado, ManuelaThis study explored the valorization of post-harvest eggplant aerial parts as a sustainable source of value-added ingredients by investigating their phenolic composition and in vitro bioactive properties. HPLC-DAD-ESI/MSn analysis identified chlorogenic acid derivatives as the predominant phenolic compounds (53 % of the phenolic fraction), followed by O-glycosylated kaempferol and quercetin. The extract display...
A biorefinery approach for the simultaneous obtention of essential oils, organi...
Gómez-Mejía, Esther; Dias, Maria Inês; Pereira, Carla; Pires, Tânia C.S.P.; Palá-Paúl, Jesús; Rosales-Conrado, Noelia; León-González, María EugeniaThis investigation evaluates the valorization of citrus peels (lemon, tangerine, and orange) to recover both on-polar and polar fractions simultaneously. Citrus essential oils, abundant in limonene (74.4–33.7 %), exhibited great antioxidant activity (IC50 = 2.002 mg/mL) and Campylobacter jejuni halo inhibition (2.9 cm), particularly in tangerine and orange essential oils. The aqueous extracts were rich in quini...
Application of encapsulated tomato by-product extract as a colorant in mascarpone
Molina, Adriana K.; Leichtweis, Maria Gabriela; Machado, Manuela; Silva, Sara; Pintado, Manuela; Barreira, João C.M.; Dias, Maria InêsAgricultural by-products, often underutilized, represent a significant opportunity to obtain sustainable value-added products to develop new functional foods. In this context, the (typically discarded) aerial parts of tomato plants (Solanum lycopersicum L. var. cerasiforme), were studied as new sources of natural bioactive compounds, focusing the extraction and encapsulation (using spray drying with maltodextri...
Nutritional profile, phytonutrient composition and biocidal properties of Portu...
Paschoalinotto, Beatriz H.; Chrysargyris, Antonios; Añibarro-Ortega, Mikel; Pires, Tânia C.S.P.; Mandim, Filipa; Dias, Maria Inês; Tzortzakis, NikolaosThe contribution of the ammonium: total nitrogen ratio (Nr0.01-0.15) in the nutrient solution on chemical profile and bioactive characteristics of Portulaca oleracea, investigated. Increased Nr levels resulted in increased proteins, total fats, carbohydrates and oxalic acid in leaves and stems, but decreased yield. The only detected tocopherol isoforms were alpha- and beta-tocopherol, with the former to reveal ...
Chromatographic and Chemometric Characterization of the Two Wild Edible Mushroo...
Saldanha, Ana Luísa; Añibarro-Ortega, Mikel; Molina, Adriana K.; Pinela, José; Dias, Maria Inês; Pereira, CarlaFistulina hepatica (Schaeff.) With. and Clitocybe nuda (Bull.) H.E. Bigelow & A.H. Sm. are wild edible mushrooms with nutritional and functional potential that remain insufficiently characterized. This study provides the first comparative assessment of their nutritional profiles, phenolic composition, and antioxidant activity, using specimens collected from Montesinho Natural Park (Portugal). Proximate composit...