27 documents found, page 1 of 3
Sustainable extraction of polyphenols from vine shoots using deep eutectic solv...
Duarte, Hugo; Aliaño-González, María José; Cantos-Villar, Emma; Faleiro, Leonor; Romano, Anabela; Medronho, BrunoVine shoots are the main by-products of grapevine pruning with no added value. In the present study, deep eutectic solvents (DESs) were used as alternatives to traditional chemical solvents, for the extraction of phyto chemicals from grapevine shoots. Three levulinic acid-based DESs were tested for the first time, and their per formance was compared to methanol (a standard chemical solvent) regarding the extrac...
The Preyssler-Type Polyoxotungstate Exhibits Anti-Quorum Sensing, Antibiofilm, ...
Faleiro, Leonor; Marques, Ana; Martins, João; Jordão, Luísa; Nogueira, Isabel; Gumerova, Nadiia I.; Rompel, Annette; Aureliano, ManuelSimple Summary: Besides showing the antibacterial activity of the Preyssler-type polyoxotungstate (POT) P5W30 with the ability to affect MRSA cells, we demonstrated that P5W30 also displays other proprieties, such as anti-quorum sensing and antibiofilm. These are biological activities that are reported for a POT for the first time. Quorum sensing and biofilm facilitate the bacterial colonization, antibiotic res...
Aqueous extracts from tunisian diplotaxis: phenol content, antioxidant and anti...
Bahloul, Nada; Bellili, Sana; AAZZA, Smail; Cherif, Ameur; Faleiro, Leonor; Antunes, Maria Dulce; Miguel, Maria Graça; Mnif, WissemAntioxidants have been considered essential for preventing cell damage by scavenging deleterious free radicals. The consumption of antioxidant-rich plants is associated with a reduced risk of some chronic diseases. This study evaluates the antioxidant and acetylcholinesterase inhibition activities of aqueous extracts obtained from different parts of Diplotaxis simplex and Diplotaxis harra from Tunisia. The stud...
The intestinal proteome of diabetic and control children is enriched with diffe...
Pinto, Elsa; Anselmo, Marisol; Calha, Maria; Bottrill, Andrew; Duarte, Isabel; Andrew, Peter; Faleiro, LeonorIn this study the intestinal microbial proteome of children with established type 1 diabetes (T1D) was compared with the proteome of healthy children (Control) with the aim to identify differences in the activity of the intestinal microbiota that will not only contribute to a deeper knowledge of the functionality of the gut in these children but may also provide new approaches to improve the Control of the dise...
The effect of alginate-based edible coatings enriched with essential oils const...
Guerreiro, Adriana; Gago, Custódia; Faleiro, Leonor; Miguel, Maria Graça; Antunes, Maria DulceThe effect of coating Arbutus unedo fresh fruit with alginate-based edible coatings enriched with the essential oils compounds (EOC) eugenol (Eug) and citral (Cit) was studied. The minimum inhibitory concentrations (MIC) against the main postharvest pathogens were determined for Eug and Cit giving values of 0.10 and 0.15 (w/v), respectively. Twelve formulations of edible coatings were used: sodium alginate (AL)...
Ammoides pusilla (Apiaceae) and Thymus munbyanus (Lamiaceae) from Algeria essen...
Tefiani, C.; Riazi, A.; Youcefi, F.; S, Azza; Gago, Custódia; Faleiro, Leonor; Pedro, L. G.; Barroso, J. G; Figueiredo, A. C.; Megias, C.The chemical composition, and antioxidant, antimicrobial and anti-proliferative activities of the essential oils of Ammoides pusilla (Apiaceae) and Thymus munbyanus (Lamiaceae), collected in Algeria, were studied. Cumin alcohol (44%), p-cymene (18%), limonene (14%), thymol (11%) and gamma-terpinene (7%) predominated in A.pusilla essential oil, whereas carvacrol (71%) was dominant in T.munbyanus essential oil. T...
Volatile-Oils Composition, and Bioactivity of the Essential Oils of Plectranthu...
Mota, L.; Figueiredo, A. C.; Pedro, L. G.; Barroso, J. G.; Miguel, Maria Graça; Faleiro, Leonor; Ascensão, L.Volatile-oils chemical composition and bioactivity of the essentail oils from Plectranthus barbatus, P. neochilus, and P. ornatus (Lamiaceae) were assessed. Aerial parts from these three related Plectranthus species were collected from cultivated plants grown in Portugal, during vegetative and flowering phases. Volatiles, isolated by distillationextraction, were analyzed by GC and GC/MS. Monoterpene hydrocarbon...
Arbutus unedo L.: Chemical and Biological Properties
Miguel, Maria Graça; Faleiro, Leonor; Guerreiro, Adriana; Antunes, Maria DulceArbutus unedo L. (strawberry tree) has a circum-Mediterranean distribution, being found in western, central and southern Europe, north-eastern Africa (excluding Egypt and Libya) and the Canary Islands and western Asia. Fruits of the strawberry tree are generally used for preparing alcoholic drinks (wines, liqueurs and brandies), jams, jellies and marmalades, and less frequently eaten as fresh fruit, despite the...
Honey-based “Agua-mel” chemical haracterization and microbiological quality
Miguel, Maria Graça; Antunes, Maria Dulce; S, Azza; Duarte, J.; Faleiro, LeonorIn Mediterranean countries such as Italy and Portugal an ancient practice among beekepers is the production of a honey-based product that is called "agua-mel" (Portuguese designation) or "abbamele" (Italian designation) that have not only food applications but also medicinal purposes. However, the characterization of such foodstuff is completely absent in Portugal. In our study the main goal was to provide the ...
Antimicrobial, antiviral and antioxidant activities of ‘‘água-mel’’ from Portugal
Miguel, Maria Graça; Faleiro, Leonor; Antunes, Maria Dulce; S, Azza; Duarte, Joana; Silvério, Ana R.‘‘Água-mel’’ is a honey-based product produced in Portugal for ancient times. Several attributes have been reported to ‘‘água-mel’’ particularly in the alleviation of simple symptoms of upper respiratory tract. Samples of ‘‘água-mel’’ from diverse beekeepers from different regions of Portugal were studied in what concerns antimicrobial, antioxidant and antiviral properties. The amounts of phenol and brown pigme...