7 documents found, page 1 of 1
Enhancing Hydrophobicity of Nanocellulose-Based Films by Coating with NaturalWa...
Ramos, Ana; López Rodilla, Jesus Miguel; Ferreira, Rodrigo; Luís, Ângelo Filipe SantosThis study aimed to improve the hydrophobicity of cellulose nanofibril (CNF) films using a natural wax coating. For this purpose, firstly, the selection, extraction and characterization of a natural wax and fatty acids were carried out. These compounds were extracted from the aerial part of the Halimium viscosum plant. The chromatogram resulting from the chemical analysis of the extract revealed the presence of...
Characterization and evaluation of Achillea erba-rotta subsp. moschata (Wulfen)...
Marengo, Arianna; Cagliero, Cecilia; Sgorbini, Barbara; Menzio, Giulia; Fusani, Pietro; Duarte, Ana Paula; Luís, Ângelo Filipe SantosEthnopharmacological relevance: Despite their different geographical distribution Achillea millefolium L. and Achillea erba-rotta subsp. moschata (Wulfen) I. Richardson are characterized by a consolidated traditional knowledge. Although this is not their first traditional use, they have also long been used as ingredients for skin healing and skin care. Aim of the study: The aim of this work was to characterize ...
Insect-based chitin and chitosan from whole body sources and rearing by-product...
Navarro, Pedro; Ribeiro, José Carlos Reis; Luís, Ângelo Filipe Santos; Domingues, Fernanda; Anjos, Ofélia; Cunha, LuisFractionation of edible insects and their rearing by-products can lead to expanded industrial applications and extraction of value-added products. The main goal of this study was to extract chitin and synthesise chitosan from three different insect sources – Tenebrio molitor larvae, adult Acheta domesticus and A. domesticus rearing by-products (legs and wings). Furthermore, the physicochemical, structural, and ...
Quorum sensing inhibition evaluation method: An experiment-based microbiology l...
Luís, Ângelo Filipe Santos; Domingues, FernandaBacteria have developed a cell-to-cell communication system called quorum sensing (QS), allowing them to regulate group behavior and synchronize the expression of virulence factors, responsible for increasing their infection capacity and resistance to antimicrobials. Although the control of microbial infections through the inhibition of microbial growth has traditionally been the basis of antimicrobial chemothe...
The anti-obesity potential of Ilex paraguariensis: results from a meta-analysis
Luís, Ângelo Filipe Santos; Domingues, Fernanda da Conceição; Amaral, Luísa Maria Jota PereiraThe dried leaves of Ilex paraguariensis, also known as yerba mate or chimarrão, are used to produce infusions consumed by over 1 million people worldwide, being a traditional drink in several South American countries, particularly, Argentina, Brazil, Uruguay, and Paraguay. The positive effects of I. paraguariensis in obesity have been described and observed in some clinical trials both in animals and in humans....
Pesquisa e identificação de compostos bioativos em plantas florestais
Luís, Ângelo Filipe SantosA avaliação científica e experimental das propriedades das plantas, que os ancestrais utilizavam na medicina tradicional, conhece um grande desenvolvimento, nomeadamente na procura de novos compostos com propriedades antioxidantes e anti-microbianas. Os compostos com propriedades antioxidantes podem ser utilizados na medicina no tratamento de patologias, relacionadas com o stresse oxidativo, em alternativa à te...
Avaliação das actividades antioxidante e anti-microbiana de extractos de resídu...
Luís, Ângelo Filipe SantosOs polifenóis, particularmente os flavonóides, são amplamente reconhecidos pelos seus potenciais efeitos benéficos para a saúde, como agentes antioxidantes e anticancerígenos. O objectivo deste estudo foi determinar a actividade antioxidante de extractos de alguns arbustos que crescem espontaneamente em Portugal (Pterospartum tridentatum, Cytisus scoparius e Erica spp.) de seguida, correlacioná-la com os compos...