The present work was carried out to evaluate the phenolic compounds, the antibacterial, antifungal and antioxidant activities of essential oil (EO) and aqueous extract (AE) of Lavandula angustifolia L. The extracts were obtained by hydrodistillation, and by decoction method using water, then, total phenolics, flavonoids and condensed tannins were determined using Folin-Ciocalteu, Aluminium chloride, and Bate-Smith reaction methods, respectively. Afterward, the antibacterial activity was evaluated using the borth microdilution and, the antifungal activity was discussed using dilution technique in solid medium. To estimate the antioxidant effect of these extracts, the Total Antioxidant Capacity and DPPH scavenging methods were performed. Results of phytochemical analysis of AE showed that total phenolics, flavonoids and condensed tannins were 67.967 ± 0.139 mg GAE/g DW, 53.578 ± 0.418 mg QE/g DW and 9.194 ± 0.323 mg/g DW, respectively. In addition, spectral analysis by Gas Chromatography of EO showed the presence of four main components in oil lavender: Linalool (29.95%), Linalyl acetate (18.86%), ρ-cymene (14.68%), and α-Campholenal (10.26%). Furthermore, the antibacterial test showed that Staphylococcus aureus and Pseudomonas aeruginosa were the most resistant compared to the other tested strains. Also, it appears that EO had greater antifungal activity compared to AE, and the both showed significant antioxidant potential. These eminent results showed that the use of L. angustifolia L. as an anti-infective in traditional environments is justified and that it should be studied more widely in order to explore its potential.

To inquire about the possibility of durable valorization of saffron, this review highlights the different techniques of in vitro culture and varietal creation of this specie. Then, a reveal main component of saffron with some pharmacological activities that make this product a serious therapeutic hope. Saffron (Crocus sativus L.) is a sterile triploid geophyte that propagated by corms. To respond to the increasing global demand for saffron, it is necessary to expand the area under cultivation. Thus, in vitro techniques can produce a large quantity of propagating material in reduced time. It is well-known that saffron is traditionally used as a coloring or flavoring agent, but recent research showed its potential for health promotion. The interest components include crocin, crocetin, picrocrocin, and safranal have all demonstrated a wide range of use in medical field. Previous studies have reported that biological activities of saffron alleviates or prevents health problems such as stomach upset, cardiovascular disease, and depression. In addition, saffron is also promising in cancer prevention due to its antioxidant properties.

The present work was carried out to evaluate the phenolic compounds and the antioxidant activities of some solvent extract (methanol, hydroethanol and aqueous) of several Moroccan medicinal plants known for their high antioxidant properties. The extracts were obtained by sonication, then, the total phenolics and flavonoids compounds were determined using Folin-Ciocalteu and Aluminium chloride. Afterwards, the Total Antioxidant Capacity and DPPH scavenging methods were performed. Results of phytochemical analysis showed that the total phenolics content were the highest in the hydroethanolic extract of Arbutus unedo with 160.76 mg GAE g-1DM, and the flavonoids content were the highest for the hydroethanolic extracts of Inula viscosa with 489.77 mg QE g-1 DM. Also, it can be noted that Arbutus unedo, Argania spinosa, and Myrtus communis exhibited the most potent antioxidant activity respectively with 0.026; 0.043; 0.036 mg ml-1.