51 documents found, page 1 of 6
Biochemical characterization of Euphorbia resinifera floral cyathia
Boutoub, Oumaima; Jadhav, Sagar; Zheng, Xiongjie; El Ghadraoui, Lahsen; Al Babili, Salim; Fernie, Alisdair R.; Figueiredo, Ana Cristina; Miguel, MariaEuphorbia resinifera O. Berg is a plant endemic to the Northern and Central regions of Morocco known since the ancient Roman and Greek times for secreting a poisonous latex containing resiniferatoxin. However, E. resinifera pseudo -inflorescences called cyathia are devoid of laticifers and, therefore, do not secrete latex. Instead, they exudate nectar that local honey bees collect and craft into honey. Honey an...
Chemical characterization and biological properties assessment of Euphorbia res...
Boutoub, Oumaima; El-Guendouz, Soukaina; Matos, Isabel; El Ghadraoui, Lahsen; Costa, Maria Clara; Carlier, Jorge; Faleiro, Maria LeonorAlthough the plants of the genus Euphorbia are largely exploited by therapists in Morocco, the composition and antibacterial activities of propolis from these plants are still unknown. To address this gap, this study aimed to characterize the pollen type, the volatile compounds, and the phenolic and mineral profiles of three Euphorbia propolis samples collected in Morocco and evaluate their antimicrobial activi...
1-Metilciclopropene and lemongrass essential oil nanocoatings effects on the pr...
Gago, Custódia; Guerreiro, Adriana; Cruz, Sandra; Martins, Nuno; Cabrita, Maria João; Miguel, Maria; Faleiro, Maria; Antunes, MariaThe effects of coating ‘Rocha’ pear with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) was evaluated and compared to the usual 1-MCP treatment. Fruit were treated with 1-MCP (312 nL L−1) or coated with nanoemulsions: sodium alginate 2 % (w/w) + lemongrass essential oil 1.25 % (w/w) (LG 1.25 %) or lemongrass essential oil 2.5 % (w/w) (LG 2.5 %). Then, fruit were stored at 0 °C and 90–9...
Six Algerian plants: Phenolic profile, antioxidant, antimicrobial activities as...
Er Kemal, Mehtap; Bakchiche, Boulanouar; Kemal, Mehmet; Cheraif, Kadour; Kara, Yakup; Bardaweel, Sanaa K.; Miguel, Maria; Yildiz, OktayIntroduction: Mediterranean countries, including Algeria, have medicinal plants used in folk medicine, such as Artemisia campestris L., Artemisia herba-alba Asso, Juniperus phoenicea L., Juniperus oxycedrus L., Mentha pulegium L., and Lavandula angustifolia Mill. It is noteworthy that the bioaccessibility of their polyphenolic ingredients have not been critically evaluated before. Methods: The bioactive propert...
Volatile characterization of honey with dominance of Bupleurum spinosum pollen
Elamine, Youssef; Machado, Alexandra M.; Estevinho, Letícia M.; Lyoussi, Badiâa; Figueiredo, Ana Cristina; Miguel, MariaMoroccan honey with Bupleurum spinosum (Apiaceae/Umbelliferae) as the main pollen source is locally known as Zantaz honey. In the present work, the volatiles from 18 honeys of this type, were isolated by hydrodistillation and analysed by Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS), for volatiles quantification and identification. The percentage composition of the volatiles and polle...
Tea tree oil: properties and the therapeutic approach to acne—a review
Nascimento, Tânia; Gomes, Diana; Simões, Ricardo; Miguel, MariaAcne vulgaris is an inflammatory dermatological pathology that affects mostly young people. However, it can also appear in adulthood, mainly in women. It has a high psychosocial impact, not only at the time of active lesions but also due to the consequences of lesions such as scarring and hyperpigmentation. Several factors are involved in the physiopathology of acne and the constant search for active ingredient...
Screening for acetylcholinesterase inhibition, lipid peroxidation inhibition an...
Aazza, Smail; El-Guendouz, Soukaina; Miguel, MariaAcetylcholinesterase (AChE), hydrolyzes acetylcholine to choline and acetate, thereby terminating this neurotransmitter effect at cholinergic synapses. Therefore, AChE inhibition is used for counterbalance the cholinergic deficit in Alzheimer's disease (AD) patients. In the present work, in order to find new plant acetylcholinesterase inhibitors, the hydroalcoholic extracts from seventeen medicinal plant specie...
Chemical and biological properties of Three Poorly Studied Species of Lycium Ge...
Miguel, MariaThe genus Lycium belongs to the Solanaceae family and comprises more than 90 species distributed by diverse continents. Lycium barbarum is by far the most studied and has been advertised as a “superfood” with healthy properties. In contrast, there are some Lycium species which have been poorly studied, although used by native populations. L. europaeum, L. intricatum and L. schweinfurthii, found particularly in ...
1-Methylcyclopropene and lemongrass essential oil nanocoatings effect on the pr...
Gago, Custódia; Guerreiro, Adriana; Cruz, Sandra; Martins, Nuno; Cabrita, Maria João; Miguel, Maria; Faleiro, Maria Leonor; Antunes, Maria DulceThe effects of coating 'Rocha' pear with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) was evaluated and compared to the usual 1-MCP treatment. Fruit were treated with 1-MCP (312 nL L-1) or coated with nanoemulsions: sodium alginate 2 % (w/w) + lemongrass essential oil 1.25 % (w/w) (LG 1.25 %) or lemongrass essential oil 2.5 % (w/w) (LG 2.5 %). Then, fruit were stored at 0 degrees C a...
Unassisted and carbon dioxide-assisted hydro- and Steam-distillation: modelling...
Sara, EL KHARRAF; EL-GUENDOUZ, Soukaina; Abdellah, Farah; El Hadrami, El Mestafa; Machado, Alexandra M.; Tavares, Cláudia S.; Figueiredo, Ana CristinaThe demand for more suitable eco-friendly extraction processes has grown over the last few decades and driven research to develop efficient extraction processes with low energy consumption and low costs, but always assuring the quality of the volatile oils (VOs). The present study estimated the kinetic extraction and energy consumption of simultaneous hydro- and steam-distillation (SHSD), and SHSD assisted by c...