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Lamiaceae is one of the largest families in the plant kingdom. Including the genus Scutellaria whose species are used in traditional medicine in various countries for prevention and also the treatment of several disorders. In vitro biological activities of the various extracts of the aerial parts from Scutellaria sibthorpii were investigated in the present study. Antioxidant activity of the extracts was measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH), ABTS assays and ferric reducing antioxidant power (FRAP) assays. Cytotoxic potential and anti-urease activities of the extracts were also determined. Spectrophotometric analysis was used to establish the total phenol content of the extracts. The antibacterial activities of extracts were assessed by minimal inhibitory concentration (MIC) against seven bacteria and Candida albicans. Regarding the results, infusion showed considerable antioxidant properties in three method (IC50 value 0.133 +/- 0.0005(DPPH), 26.54 +/- 0.05 mM trolox/mg extract(ABTS), 8.76 +/- 0.1 mM Fe+2/mg extract (FRAP)). Other extracts exhibited high-to-moderate antioxidant effects. Among the studied samples, the infusion had the highest total phenolic content (0.0295 +/- 0.0002 mg GAE/mg extract). According to cytotoxicity results, n-hexane extract had strong cytotoxic effects against PC-3 and NIH/3T3 cell line with IC50 values of 330.40 mu g/mL and 340.85 mu g/mL, respectively. In the antibacterial activity screening, the ethyl acetate extract showed higher activity against Enterecocus facecalis, Klebsiella pneumoniae, Proteus mirabilis with 625 mu g/mL MIC value. According to the research carried out, it would seem that this is the first study on screening biological activities of extracts from Scutellaria sibthorpii. These findings indicate that these endemic species from Cyprus could be used in phytopharmaceutical preparation. WOS:000838325200007

Additional file 2: Table S1. Isolated alkaloids from PG and PD extract.

Additional file 3: Table S2. Rf Values of Alkaloids Obtained from P. glaucum (PG) and P. decaisnei (PD) Extracts.

Purpose: To evaluate the antioxidant and cytotoxic effects, and casticin contents of Vitex agnus-castus (VAC) fruit extract from five geographical regions of Turkey.Methods: Casticin determination in VAC fruit extracts was performed using HPLC-DAD method. The method was validated for linearity, sensitivity, selectivity, accuracy and precision. The methanol extracts of the VAC fruits were analyzed for antioxidant effects using 2,2-diphenyl-1-picrylhydrazyl (DPPH•) radical scavenging capacity, metal-chelation capacity assay, radical cation scavenging capacity (ABTS•+), and total phenolic content. The cytotoxic potential of the extracts against NRK-52E and HeLa cells were determined using MTT and LDH assays.Results: The casticin content of the extracts ranged from 0.048 and 0.152 %. Total phenol content was in the range of 36.67 ± 0.7 to 74.20 ± 1.02 mg gallic acid equivalent (GAE)/100 mg of extracts. High-tomoderate antioxidant properties were observed in the extracts. Cytotoxicity data demonstrated that all extracts showed high cytotoxic effects on HeLa cell line when compared to the NRK-52E cell line (p < 0.05).Conclusion: These results suggest that VAC fruits (Monk’s pepper fruits) from Aegean sea coasts have a potential for use in the preparation of phytopharmaceutical products. Keywords: Vitex agnus-castus, Casticin, Antioxidant, Cytotoxic activity, Anticancer