Publications by authors named "Mustapha Taleb"

Currently, industrial water pollution represents a significant global challenge, with the potential to adversely impact human health and the integrity of ecosystems. The continuous increase in global consumption has resulted in an exponential rise in the use of dyes, which have become one of the major water pollutants, causing significant environmental impacts. In order to address these concerns, a number of wastewater treatment methods have been developed, with a particular focus on physicochemical approaches, such as adsorption.

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  • The study examines the chemical properties and therapeutic potential of ylang-ylang essential oil, focusing on its benefits for skin diseases and safe formulation practices.
  • Essential oils were extracted from flowers, and analysis revealed compounds like linalool and geranyl acetate, demonstrating significant antioxidant and antibacterial activity, as well as varying hemolytic effects.
  • Molecular docking studies suggest the oil's components could effectively target proteins related to acne, eczema, and psoriasis, indicating ylang-ylang's potential as a natural treatment, while emphasizing the need for careful formulation to minimize side effects.
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The threat of emerging viral outbreaks has increased the need for fast and effective development of therapeutics against emerging pathogens. One approach is to modify the structure of existing therapeutic agents to achieve the desired antiviral properties. Here, we attempted to synthesize a new antiviral compound by modifying the structure of chloroquine using the of the primary amine (N1,N1-diethylpentane-1,4-diamine) that is used in chloroquine synthesis.

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As a corrosion inhibitor for mild steel in a molar hydrochloric acid medium, we investigated the potential of essential oil (). Through electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curves, and theoretical methods, including DFT/B3LYP 6-31G (d, p) and Monte Carlo simulations, the interactions between the components and the steel surface were analyzed. D-Allose, Betulinaldehyde, and Uvaol were identified as the major active compounds in the GC-MS analysis.

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The corrosion of metals poses a threat to the economy, the environment, and human health due to undesirable reactions and contaminated products. Corrosion inhibitors, including natural products, can play a key role in protecting metallic materials, especially under challenging conditions. In this study, the roots of the plant were examined for their ability to act as corrosion inhibitors in a 1 M hydrochloric acid (HCl) solution.

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The global scientific community is deeply concerned about the deterioration of water quality resulting from the release of industrial effluents. This issue is of utmost importance as it serves to safeguard the environment and combat water pollution. The objective of this work is to elaborate a biomaterial of vegetable origin, based on the twigs of Aleppo pine, and to use it as an abundant and less expensive material for the treatment of wastewater.

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This study investigated the effects of varying water stress levels on essential oils (EO). Three samples (S1, S2, and S3) were cultivated under different stress levels (40, 60, and 80%). Increased water stress led to changes in primary and secondary metabolites, EO contents, and physical properties.

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Morocco is known for its high plant biodiversity, but many plants are poorly valorized. For this reason, this study aims to valorize the methanolic and aqueous extracts of leaves by studying their antioxidant activity and toxicity. The extracts' antioxidant activity is assessed using the FRAP, DPPH, CAT, and ABTS methods.

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  • * HPLC analysis identified licoflavone C (30%) in (L.) and hesperidin (43%) in (L.), showing strong antioxidant activity with specific IC50 and EC50 values, and high total antioxidant capacities.
  • * The extracts exhibited significant analgesic effects (up to 97.83% writhes inhibition) and anti-inflammatory potential (up to 94% edema inhibition), with limited hemolytic activity, suggesting their promising role in pharmacological applications.
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  • * The antioxidant activity of these compounds was tested via in vitro assays; some showed significantly higher activity than reference compounds, particularly in removing radicals.
  • * Molecular docking and dynamics simulations were performed to explore how well the compounds bind to human Peroxiredoxin 5, alongside an ADMET study to assess their drug properties.
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A central position in Moroccan ethnobotany is held by the genus, serving as a vital reference for aromatic and medicinal plants within the Lamiaceae family. The profound importance of species in the daily lives of Moroccans is recognized, and the primary objective of this study is to assess the impact of rising temperatures and decreasing precipitation on the primary and secondary metabolites of under the following climatic conditions: sample 1, cultivated under standard temperature and precipitation conditions during the first year; sample 2, subjected to an 8 °C temperature increase and a 25% reduction in water supply; and sample 3, exposed to a 12 °C temperature rise and a 50% decrease in water availability. Phytochemical screening results reveal a progressive decline in primary metabolites from sample 1 to sample 3 due to the increase in temperature and decrease in precipitation.

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The study aimed at investigating the phytochemical composition, antioxidant and antibacterial activities of essential oils (EOs) of Origanum grossii and Thymus pallidus. The selection of these plants for the study was driven by a comprehensive survey conducted in the Ribat Elkheir region of Morocco, where these plants are widely utilized. The results reflect the valorization of these plants based on the findings of the regional survey.

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The synthesis of 5,6,7,8-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-9(4H)-one (THTQ), a potentially biologically active compound, was pursued, and its structure was determined through a sequence of spectral analysis, including H-NMR, C-NMR, IR, and HRMS. Four bacterial and four fungal strains were evaluated for their susceptibility to the antibacterial and antifungal properties of the THTQ compound using the well diffusion method. The impact of THTQ on the corrosion of mild steel in a 1 M HCl solution was evaluated using various methods such as weight loss, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) analysis.

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Canola, L., is a major oilseed crop that has various uses in the food, feed, and industrial sectors. It is one of the most widely produced and consumed oilseeds in the world because of its high oil content and favorable fatty acid composition.

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The triazole ring in the title mol-ecule, CHNO, is not quite coplanar with the six-membered ring to which it is fused, the dihedral angle between the two least-squares planes being 2.52 (6)°. In the crystal, a layered structure is formed by N-H⋯N and C-H⋯O hydrogen bonds plus slipped π-stacking inter-actions, with the fused cyclo-hexene rings projecting to either side.

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Contamination in water is due to various environmental pollutants from natural and anthropogen activities. To remove toxic metals from contaminated water, we developed a novel adsorbent in foam form based on an olive industry waste material. The foam synthesis involved oxidation of cellulose extracted from the waste to dialdehyde, functionalization of the cellulose dialdehyde with an amino acid group, reacting the functionalized cellulose with hexamethylene diisocyanate and p-phenylene diisocyanate to produce the target polyurethanes Cell-F-HMDIC and Cell-F-PDIC, respectively.

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A novel double-open-cubane (NNCO)CoCl cluster with a CoO core was made available under aqua-ultrasonic open atmosphere conditions for the first time. The ultrasonic clusterization of the (3,5-dimethyl-1-pyrazol-1-yl)methanol (NNCOH) ligand with CoCl·6HO salts in ethanol yielded a high-purity and high-yield cluster product. Energy-dispersive X-ray (EDX), Fourier transform infrared (FT-IR), and ultraviolet (UV)-visible techniques were used to elucidate the clusterization process.

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This work concerns the reuse of treated wastewater from Er-Rachidia wastewater treatment plant (WWTP) in the mixing of ordinary C20/25 concrete, to reduce the overexploitation of non-potable groundwater, avoid its discharge into watercourses and reduce the risk of environmental pollution due to its mineral and organic matter load. In this respect, three types of mixing water were used in this study: drinking water (DW), non-potable groundwater (GW), and treated wastewater (TW). The results recorded for each type of mixing water, in the fresh and hardened state of concretes, were compared with the requirements of the standards.

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An ethnobotanical survey was conducted among herbalists in the north-central region of Morocco using a questionnaire in order to highlight knowledge and know-how and to establish an inventory of herbal remedies used in the treatment of diseases common in the region and rarely cited in the bibliography: in this case, it is insomnia, asthenia, and oral-gum infections. The results showed that 120 herbalists were interviewed in different areas of the Fez-Meknes region, about 86 species were cited and grouped into 60 families (47 plants to treat asthenia, 25 to treat insomnia, and 21 to treat oral and gum infections). The reported plants have been identified and presented with the binomial name, family, part used, and method of preparation.

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Statistical modeling of the corrosion inhibition process by twenty-one pyridazine derivatives for mild steel in acidic medium was investigated by the quantitative structure property relationship (QSPR) approach. This modeling was established by the correlation between the corrosion inhibition efficiency () and a number of the electronic and structural properties of these inhibitors such as: the (highest occupied molecular orbital energy), the (lowest unoccupied molecular orbital energy), the energy gap ( ), the dipole moment (), the hardness (), the softness (), the absolute electronegativity (χ), the ionization potential (), the electron affinity (), the fraction of electrons transferred (), the electrophilicity index ω the molecular volume ( ), the logarithm of the partition coefficient (), and the molecular mass (), in addition to the inhibitor concentration ( ). The structure electronic properties was calculated by the use of the density functional theory method (DFT), at B3LYP/6-31G (d, p) level of theory and the analysis of dimensionality and redundancy as well as the test of collinearity between descriptors are carried out using principal component analysis (PCA).

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The extraction of essential oils is generally carried out by two main techniques: azeotropic distillation (hydrodistillation, hydrodiffusion, and steam distillation) and extraction with solvents. However, these traditional methods are a bit expensive, especially since they are extremely energy and solvent consuming. This work consists in studying two methods of extraction of the essential oils of L.

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In the title compound, C5H7N5S·H2O, the main mol-ecule is approximately planar, with a maximum deviation from the mean plane through the non-H atoms of 0.1478 (12) Å for the amine N atom. In the crystal, the components are connected via N-H⋯O, N-H⋯S and O-H⋯N hydrogen bonds, forming a three-dimensional network.

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