Lavandula multifida a medicinal plant from the Lamiaceae family is commonly used in traditional medicine to address various ailments. The sustainable use and valorization of natural resources are becoming increasingly significant concerns in our country. This study aims to perform phytochemical screening and evaluate the antibacterial and antioxidant properties of Lavandula multifida. Hydro-ethanolic extract sourced from Boulhaf Eddir in the Tebessa region (southeastern Algeria). The extract was prepared through maceration using water and ethanol, yielding 38.57 %. Phytochemical analysis revealed the presence of flavonoids, catechic tannins, gallic tannins, saponins and steroids, while alkaloids, terpenes and quinones were absent. The quantitative antibacterial assessment showed variability in inhibition zone diameters against the tested bacterial strains, with the minimum inhibitory concentration (MIC) recorded at 12.25 mg/mL for S. aureus and B. subtilis and 25 mg/mL for K. pneumoniae and E. coli. The CMB/MIC ratios indicated a bactericidal effect of the extract on all tested strains. Additionally, the antioxidant activity assay demonstrated significant DPPH radical scavenging capability, with IC50 values of 117.0 ± 3.46µg/mL for leaf extract and 100.2 ± 7.56µg/mL for flower extract. These promising results suggest the potential application of Lavandula multifida extract in the agro-food and pharmaceutical industries for its antibacterial and antioxidant properties.
Fenghour et al. (Thu,) studied this question.