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Antimicrobial Activity of Five Yemeni Medicinal Plants against Selected Human Pathogenic Bacteria and Fungi

American Journal of Plant Sciences 2019年第10期10卷 1699-1707页

作者： nagi al-haj alariqi Reem Hassan al-Shamahy Khaled al-Moyed Saleh S. Bahaj Ammar Jaber Dept. of Medical Microbiology Faculty of Medicine and Health Sciences Sana’a University Sana’a Yemen

Background: The emergence and spread of antibiotic resistance, as well as the evolution of new strains of disease causing agents, are of great concern to the global health community. Nowadays, reports have indicated that many of healthcare-associated, antimicrobial-resistant bacteria are not only multidrug resistant pathogens but also broadly drug-resistant and pandrug-resistant bacteria. Objective: This study is focused on exploring the antimicrobial properties of five different plants that are commonly being used as traditional medicines in Yemen against Gram positive, Gram negative bacteria and fungi. Methods: The antimicrobial potential of five different plant extracts was screened against selected human pathogenic bacteria and fungi. Methanolic extracts of Dodonaea viscose, Plantago lanceolata, Withania samnifera, Pulicaria crispa, and Rumex nervosus were subjected to a test of their antimicrobial properties by Modified Agar Diffusion and Minimum Inhibitory Concentration. Results: The results indicated that all the five plants extract showed antibacterial activity against a selected microorganism at a concentration of 60 mg/ml. The highest potential was observed in the extract of W. somnifera against S. taphyloccocus aureus, Pseudomonas aeruginosa, Proteus miarbilis and Candida albicans with zone of inhibition of 23 mm, 20.7 mm, 20 mm and 25.3 mm, respectively. R. nervosus also showed the highest MIC against test organisms. Only two medicinal plant Pulicaria crispa, and Rumex nervosus extracts showed non antifungal activity. Conclusion: The experiment confirmed the efficacy of some selected plant extracts as natural antimicrobial and can be potential sources for the synthesis of antibacterial drugs.

关键词： Antimicrobial Activity Plant Extract Multidrug Resistant Yemen

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