16 documents found, page 1 of 2
Quick decline and stem pitting Citrus tristeza virus isolates induce a distinct...
Dandlen, Susana; Da Silva, José Paulo; Miguel, Maria Graca; Duarte, Amilcar; Power, Deborah; Marques, NatáliaSusceptibility to the severe Citrus tristeza virus (CTV), T36, is higher for Citrus macrophylla (CM) than for C. aurantium (CA). How host-virus interactions are reflected in host physiology is largely unknown. In this study, the profile of metabolites and the antioxidant activity in the phloem sap of healthy and infected CA and CM plants were evaluated. The phloem sap of quick decline (T36) and stem pitting (T3...
Impact of fifteen combinations of the main components of rosemary, lavender and...
Kharraf, Sara El; EL-GUENDOUZ, Soukaina; Farah, Abdellah; Mateus, Maria Da Conceição; Hadrami, El Mestafa El; Miguel, Maria GracaSince ancient times, essential oils or their volatiles have been used in food, health and aromatherapy. Essen-tial oils are complex mixtures constituted by dozens of compounds, which makes it difficult to attribute their biological properties to this or that compound or compound combinations. Moreover, the quantification of the volatiles is generally made through their relative percentage abundances. In the pre...
Quality assessment of Portuguese monofloral honeys. Physicochemical parameters ...
Machado, Alexandra M.; Tomás, Andreia; Russo-Almeida, Paulo; Duarte, Aida; Antunes, Marília; Vilas-Boas, Miguel; Miguel, Maria GracaThe quality evaluation and physicochemical parameters assessment of Portuguese monofloral honeys were performed. Fifty-one monofloral honeys were collected from several regions from mainland Portugal, and from the Azores islands, producer labelled as carob tree (n = 5), chestnut (n = 2), eucalyptus (n = 5), bell heather (n = 6), incense (n = 4), lavender (n = 8), orange (n = 9), rape (n = 2), raspberry (n = 2),...
Biological properties of latex, aqueous extracts and bee products of Euphorbia ...
Boutoub, Oumaima; Ghadraoui, Lahsen El; Miguel, Maria GracaEuphorbia officinarum L. is a Moroccan endemic plant known as “Tikiout” and “Daghmus” that can also be found in Mauritania, Western Sahara, and Algeria. In the present review, “Euphorbia officinarum”, “metabolites” “hemisynthesis” were the keywords used for the research in the Web search engine Google Scholar and in the database Web of Science. Triterpenes, phytosterols and ingol diterpenes were isolated and id...
Nutritional characterization and storage ability of Salicornia ramosissima and ...
Antunes, Maria Dulce; Gago, Custódia; Guerreiro, Adriana; Sousa, Ana Rita; Julião, Miriam; Miguel, Maria Graca; Faleiro, Maria LeonorThe aim of this work was to study the potential of two halophytes for fresh salads. <i>Sarcocornia perennis</i> (SAR) and <i>Salicornia ramosissima</i> (SAL) plant tips were harvested in May and July, and stored at 4 °C for 14 days. At harvest, mineral analyses (Na, K, Mg, Ca, P, N, Fe, Zn, Cu, Pb and Cd), chlorophyll content, protein, β-carotene and ascorbic acid were performed. Color (CIELab), phenolics, anti...
A review of plant metabolites with metal interaction capacity: a green approach...
Nobahar, Amir; Carlier, Jorge Dias; Miguel, Maria Graca; Costa, Maria ClaraRapid industrial development is responsible for severe problems related to environmental pollution. Many human and industrial activities require different metals and, as a result, great amounts of metals/heavy metals are discharged into the water and soil making them dangerous for both human and ecosystems and this is being aggravated by intensive demand and utilization. In addition, compounds with metal bindin...
Effect of essential oils on the release of TNF-α and CCL2 by LPS-stimulated THP...
Miguel, Maria Graca; da Silva, Carina Isabel; Farah, Luana; Castro Braga, Fernão; Figueiredo, Ana CristinaPlants and their constituents have been used to treat diverse ailments since time immemorial. Many plants are used in diverse external and internal formulations (infusions, alcoholic extracts, essential oils (EOs), etc.) in the treatment of inflammation-associated diseases, such as those affecting the respiratory tract or causing gastrointestinal or joint problems, among others. To support the traditional uses ...
Natural antioxidants in emulsions O/W
EL-GEUNDOUZ, Soukaina; Azza, S.; Dandlen, Susana Anahi; MAJDOUB, Nesrine; Lyoussi, Badiaa; Raposo, Sara; Gomes, Vera; Bankova, Vassya; Popova, MilenaThis study compared the capacity of propolis extract (PE) and thyme waste extract (TWE) to prevent the oxidation of oil in water (O/W) emulsion, as well as their impact on emulsion apparent viscosity (AV) in the presence of wheat germ and almond oils as lipid phase. For this, central composite design (CCD) and principal component analysis (PCA) were performed. Oxidation process was monitored by evaluating the f...
Effect of essential oils on the release of TNF-α and CCL2 by LPS-Stimulated THP...
Miguel, Maria Graca; Silva, Carina Isabel da; Farah, Luana; Castro Braga, Fernão; Figueiredo, Ana CristinaPlants and their constituents have been used to treat diverse ailments since time immemorial. Many plants are used in diverse external and internal formulations (infusions, alcoholic extracts, essential oils (EOs), etc.) in the treatment of inflammation-associated diseases, such as those affecting the respiratory tract or causing gastrointestinal or joint problems, among others. To support the traditional uses ...
Myrtus communis essential oils: insecticidal, antioxidant and antimicrobial act...
Hennia, Aicha; Nemmiche, Said; Dandlen, Susana; Miguel, Maria GracaMyrtle (Myrtus communis L.) is a wild aromatic plant that laboratorial works have demonstrated the insecticidal, antioxidant, anti-inflammatory and antimicrobial activities of myrtle essential oils (EOs). The chemical composition may change according to several factors; nevertheless, it was constant in practically all EOs the presence of 1,8-cineole and α-pinene, as main components (>5%). The biological activit...