Percorrer por autor "Ghadraoui, Lahsen El"
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- Biological properties of latex, aqueous extracts and bee products of Euphorbia Officinarum L.: a short reviewPublication . 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 identified in the latex of Moroccan E. officinarum. More than sixty triterpenes were obtained by hemisynthesis from natural triterpenes. Some of these derivatives had insecticidal and antimicrobial activity (phytopathogenic bacteria). The total phenol content and the antioxidant and anti-α-glucosidase activities were dependent on the time and temperature of extractions and also on the plant solvent ratio. The antioxidant activity of monofloral honey of E. officinarum origin was attributed to the phenol fraction (this fraction, previously isolated from honey samples, had better activity than the entire honey).
- Euphorbia resinifera: chemical composition and biological properties (short review)Publication . boutoub, Oumaima; Ghadraoui, Lahsen El; Miguel, Maria da GraçaThis review updates the information on the chemical composition of E. resinifera (spurge resin) latex and its biological properties, as well as those from the aerial parts and bee products (honey and propolis), generally without latex. From such review and according to the studies developed so far, it was possible to confirm that the chemical composition of latex and non-latex compounds differs. In the latex, diterpenes, nor sesquiterpenes, triterpenes, and serine proteases (EuRP-61) with 61 kDa predominate despite other minor compounds. The identified protease had anticoagulant, antiplatelet, and peripheral blood cell aggregation inhibitory properties. Phenolics, including flavonoids and tannins, have antioxidant activity and are dominant in the aerial parts of E. resinifera. Phenolic acids and flavonoids, particularly flavanones, flavones, and flavonols and their glycosides, were identified in the spurge resin honey. Generally, honey samples were within the acceptable limit of international standards. Antioxidant activity was reported for this monofloral honey. Antimicrobial activity was also detected in hydroalcoholic extracts of propolis.