Introduction: The objective of this study was to evaluate the antibacterial activity of hydromethanolic extracts of Berberis vulgaris, Cassia angustifolia, Cinnamomum cassia, Cistus monspeliensis, Nigella sativa, Punica granatum, Rhus tripartata, Withania frutescens and Zingiber officinale against different Gram-positive and Gram-negative reference bacterial strains. Methods: The evaluation of antibacterial activity for different extracts of each plant was carried out using the disc diffusion method and determination of minimum inhibitory concentration (MIC). Results: The plant extracts showed zone of inhibition ranging from 06.0 to 23.0 mm against one or more tested bacteria, and their efficacy in terms of MICs where ranged from 0.1 to 12.8 mg/mL. The Refluxed and Macerated extracts of these plants have shown relatively similar results in terms of diameters of inhibition and MICs. The extracts of B. vulgaris, C. monspeliensis and P. granatum demonstrated relatively high activity as compared to the other plant extracts mainly against S. aureus, E. faecalis and E. cloacae. Conclusion: Findings of this study indicate that hydromethanolic extracts of these plants have antibacterial activity against the different tested bacterial strains. This activity supports their use in treatment of infections caused by such resistant bacteria.
Three fruit oil samples of Ammodaucus leucotrichus Cosson & Durieu from Algerian Sahara were obtained by hydrodistillation and analyzed by GC(RI), GC-MS and 13 C NMR spectroscopy. The main compounds were perillaldehyde (87.0-87.9%) and limonene (7.4-8.2%). The antimicrobial effect of the essential oil was evaluated against bacteria, yeasts and filamentous fungi. High antibacterial activity was observed against Escherichia coli, Staphylococcus aureus, Enterobacter cloaceae, Bacillus cereus and Salmonella typhimurium, with MIC values between 0.5-1.0 μL/mL. Fungal strains were also sensitive to the essential oil (MIC values: 0.25-0.75 μL/mL).The most potent activity was observed against the filamentous fungi, Fusarium oxysporum and Aspergillus flavus (0.25-0.50 µL/mL).
The objective was to investigate the yield and chemical composition of 50 essential oil samples isolated from leaves and flowers of Tetraclinis articulata harvested in eight locations (coastal township and highlands) of Tlemcen Province (North-Western Algeria). Essential oil yields varied drastically from sample to sample (0.03 to 0.86%, w/w). No direct correlation was observed between the yield and the altitude of the harvest areas. The oils consisted mainly of monoterpenes: α-pinene (9.2–56.5%), bornyl acetate (1.2–45.1%), camphor (0.5–40.3%), borneol (0.2–12.9%), limonene (3.6–12.5%), and myrcene (1.6–9.7%). Sesquiterpenes were represented by germacrene D (up to 14.2%) and (E)-β-caryophyllene (up to 13.3%). PCA analysis of the data allowed the distinction of two groups within the samples. The composition of group I (9 samples) was dominated by camphor, (Mean = 30.9%) followed by α-pinene (M = 19.1%) and bornyl acetate (M = 11.4%). Group II was divided into two sub-groups. Samples of sub-group IIA (8 samples) contained mainly α-pinene (M = 45.4%). Samples of the largest group IIB (33 samples) were characterized by similar contents of α-pinene (M = 28.2%) and bornyl acetate (M = 24.5%) and the occurrence of camphor to a lesser extent (M = 10.0%).
Root essential oil of Pulicaria mauritanica Coss. (Asteraceae) collected from western Algeria was analysed using a combination of chromatographic (CC, GC/FID, GC(RI)] and spectroscopic [GC-MS, 13 C-NMR] techniques. Thirty-eight compounds accounting for 90.4% of the whole composition were identified. The oil composition was dominated by thymyl derivatives (2,5-dimethoxy-p-cymene (37.2%), 6-methoxythymyl isobutyrate (14.2%), 10-isobutyryloxy-8,9-dehydrothymyl isobutyrate (4.8%) and thymyl isobutyrate (3.1%)), as well as by neryl isobutyrate (11.1%). A new natural compound was isolated and the structure was elucidated as 1S,2S,5S,8S-modhephan-3-one (relative stereochemistry).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.