As consumer trends shift towards more natural and ecological consumption patterns, industrialists are actively working towards substituting synthetic chemicals with natural and vegan products that contain bioactive properties. Thus, considering the shifts in customer demand and the growing concern around vegetable sourced productions, this work aims to contribute to the valorization of aromatic and medicinal Moroccan plants. By focusing on the Marrubium vulgare L. species, our objective is to carry out a physicochemical characterization to determine its chemical composition and biological activities. The volatile fraction collected by hydrodistillation (0.61%) and analyzed by GC-MS (gas chromatography coupled to mass spectrometry) contains five main compounds: 3-Thujanone, Eugenol, Topanol, Menthone and Piperitone. The antioxidant activity has been estimated by applying the DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging test and the ferric reducing antioxidant power (FRAP). The values of inhibitory concentration prove that our oil is a good antioxidant, with values of IC₅₀ = 1.136 mg/mL and IC₅₀ = 2.998 mg/mL, respectively, for the DPPH and FRAP tests. The results of the antifungal activity indicate a significant inhibition of mycelial growth for both tested molds, as well as a total inhibition of spore production at a concentration of 0.25 µL/mL.

Silybum marianum L., commonly known as milk thistle, is traditionally recognized for its hepatoprotective properties. This is primarily due to silymarin, a mixture of flavonolignans with strong antioxidant and anti-inflammatory activities. Although many studies have reported on its biological activities, critical syntheses that compare extraction technologies and highlight its protective roles beyond liver health remain limited. Despite the abundant literature, the protective effects of milk thistle against skin damage remain largely unexplored. To address this gap, we performed a comprehensive literature search across PubMed, Scopus, Web of Science, and Google Scholar. Our research covered publications up to February 2025 and used predefined keywords, including extraction methods for the release of silymarin, in vitro, in vivo, and clinical studies relevant to its protective effects against skin damage. The evidence indicates that silymarin exerts protective effects on the skin, including the prevention of photoaging, the management of acne, the promotion of wound healing, and the defense against UV-induced damage, through the activation of Nrf2 and the preservation of the extracellular matrix. These results highlight the promising dermatological benefits of silymarin, as well as the need for further clinical studies and the optimization of environmentally sustainable extraction techniques for large-scale production.

This study investigates the antioxidant and anticorrosive properties of Mentha pulegium L. essential oil (MP EO) as a sustainable and eco-friendly alternative to synthetic oxidation inhibitors. The antioxidant activity of MP EO was evaluated using the ferric reducing antioxidant power (FRAP) assay, which demonstrated a strong electron-donating capacity and effective reduction of ferric ions, indicating promising antioxidant potential. The anticorrosive performance was assessed on mild steel in 0.5 M H₂SO₄ using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results showed inhibition efficiencies of up to 75.8% at a concentration of 2 g/L. Molecular docking simulations revealed favorable binding interactions between the key oil components (pulegone and menthone) and the ROS-generating enzyme model (PDB ID: 2CDU), providing complementary mechanistic insight into their potential role in oxidative stress modulation. Additionally, quantum chemical calculations highlighted electronic properties favoring adsorption on metallic surfaces. Surface morphology analysis using SEM/EDX confirmed the formation of a protective film on steel in the presence of MP EO. These combined findings position Mentha pulegium essential oil as a potent, biodegradable candidate for both antioxidant applications and corrosion prevention in acidic environments.

The goal of this study was to determine the composition of olive oils from four North Moroccan provinces (Larache, Chefchaouen, Ouazzane and Tetouan), one of the main productive zones nationwide. For this purpose, we evaluate the quality parameters, phenolic compounds, oxidative stability, fatty acids, sterols, uvaol + erytrodiol, carotenoids and chlorophylls of three varieties (‘Picholine marocaine’, ‘Haouzia’ and ‘Menara’) in three campaigns (2019/2020 to 2021/2022) and in three harvesting periods. Another aim was to research the effect of natural microtalc (NMT) on the compounds of olive oils, and to evaluate whether the addition of microtalc to olive pastes during the malaxation stage influences in the quality of olive oils. From the results, it was observed that industrial yields increase when natural microtalcs were used during the oil production. Considering the quality parameters, the olive oils produced with NMT showed lower values when compared with those obtained without any addition. Also, oils produced with NMT showed a higher content in phenolic compounds as well as a greater oxidative stability. It is worth highlighting that the maximum content in phenolic compounds, adding NMT during the extraction process, was determined in oils obtained from the ‘Picholine marocaine’ variety from Chefchaouen, harvested in the 2019/2020 campaign, with 848.71 mg/kg oil, with a value of oxidative stability of 78.68 h.