FCS - Artigos em Atas de Conferências Nacionais
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- Protective activity of coffee silverskin extracts: evaluation on erythrocyte oxidative-induced hemolysisPublication . Ferreira da Vinha, Ana; Costa, Elísio; Costa, Anabela S.G.; Alves, Rita C.; Santos-Silva, Alice; Oliveira, M. Beatriz P.P.Natural antioxidants from industry by-products have been receiving increasing attention, having in view the sustainability of the processes. Coffee silverskin, a pellicule that covers the raw coffee bean, is a by-product of coffee roasting since it is detached during this procedure. Human erythrocytes are particularly useful in the evaluation of the antioxidant properties of bioactive compounds, since they are susceptible to endogenous oxidative damage due to their specific role as oxygen carriers. The aim of this work was to evaluate the capacity of natural antioxidants of coffee silverskin to protect erythrocytes from oxidative injury induced by the water soluble radical initiator 2,2-azobis (2 amidinopropane)dihydrochloride (AAPH) and by H2O2. The results showed that coffee silverskin extracts protected erythrocytes in a significant way from oxidative-AAPH and oxidative-H2O2 induced hemolysis. As far as we know, there are no investigations, which evaluate the protective activity of coffee silverskin extracts on human erythrocytes hemolysis.
- Phytochemical analysis of three wild edible portuguese fruits that may provide potential health benefitsPublication . Albuquerque, Carina; Ferreira da Vinha, Ana; Costa, Anabela S.G.; Alves, Rita C.; Oliveira, M. Beatriz P.P.Portuguese flora is recognized for its high biodiversity. Many underutilized wild fruits have great nutritional and functional potentials, providing chemical compounds with biological properties. In this work, the phytochemical composition and antioxidant activity of three wild edible fruits (Arbutus unedo L., Crataegus monogyna Jacq., and Rosa canina L.), collected in the North of Portugal, were evaluated. Hydroalcoholic extracts were prepared from fresh fruits, and total phenolics, flavonoids and anthocyanins contents were determined. Moreover, two different assays were used to evaluate antioxidant activity: 2,2-diphenyl-1-picrylhydrazyl radical (DPPH• ) inhibition assay and ferric reducing antioxidant power (FRAP). As expected, a wide variability was found in the composition of these three wild Portuguese fruits. Phytochemical screening revealed considerable amounts of total phenolics (65-150 mg gallic acid eq./100 g), total flavonoids (126-180 mg epicatechin eq./100 g) and anthocyanins (1.66-29.6 mg cyanidin-3-glycoside eq./100 g). Extracts of Arbutus unedo L. fruits presented the highest antioxidant activity, followed by Crataegus monogyna Jacq., and Rosa canina L., by this order.
- Development of an in vitro test for the evaluation of the sweat-resistance efficacy of decorative cosmetics – an exploratory studyPublication . Costa, Silvana; Oliveira, Rita; Sousa-Lobo, José Manuel; Almeida, Isabel
- Topical probiotics: the future of dermatology to improve the health of the skin microbiomePublication . Schutz, Francine; Barata, Pedro; Oliveira, Rita
- Patient centric design of a topical vehicle for corticosteroids: a strategy to improve adherence to dermatological treatmentsPublication . Pedroso, Marta; Silva, Diva; Garrido, Jorge; Oliveira, Rita; Sousa-Lobo, José Manuel; Almeida, Isabel
- Aplicação de ciclodextrinas na promoção da adesão à terapêutica dermatológica com corticosteroidesPublication . Garrido, Manuela; Oliveira, Bárbara; Oliveira, Rita; Almeida, Isabel; Garrido, Jorge