The focus of this paper was to assess the phytochemical composition, the antioxidant and antibacterial activities of the crude extracts of the aerial parts of Ferula lutea. Four new compounds were isolated from this genus, and their structures were primarily established by extensive spectroscopic analysis including 1D and 2D spectroscopic techniques. Total phenolics and flavonoids containing in ethyl acetate (AcOEt) and n-butanol (n-BuOH) extracts were quantified [199.1-184.02 mg gallic acid equivalent / g of dry weight], flavonoids [70.24-65.95 mg quercetin / g dry weight]. DDPH scavenging and phosphomolybdenum methods were used to evaluate in vitro antioxidant activity. The obtained results showed a significant antioxidant activity of the two aerial parts. Correlation analysis between the DPPH values and those for TAC indicates the possibility of the two models for evaluating antioxidants power from medicinal plants. Dichloromethane (CH2Cl2), AcOEt and n-BuOH extracts were screened against two gram-negative [Escherichia coli (E.coli) and Pseudo aeruginosa (P.aer)] and two gram-positive [Staphylococcus aureus (S.aur) and Bacillus (Bacil.)] bacteria using disc diffusion method. The results indicate a good inhibition of CH2Cl2 and EtAct extracts on the growth of (Bacil. and E.coli). Furthermore n-but extract showed a significant inhibitory effect only against E.coli.

In this study, we focused on the isolation and identification of the main compounds, triterpene, sterol, phenolic and fatty acid from the aerial parts of Physospermum verticillatum, which has not been previously reported. Dichloromethane, ethyl acetate and n-butanol extracts led to the isolation of ß-amyrin (1), 3,11-dihydroxy-12-oleanene (2), pentadecanoic acid (3), spina-sterol (4), spinasterol-3-O-ß-D-glucopyranoside (5) and saikochromic acid (6). These compounds were determined by means of the combined systems with high resolution tandem mass spectrometry (HPLC-TOF/MS), 1D NMR ( 1 H NMR, 13 C NMR) and 2D NMR (COSY, HSQC and HMBC). Further, the extracts demonstrated significant antibacterial activity. Article Info