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  • Title: Antimicrobial activity of South African Podocarpus species.
    Author: Abdillahi HS, Stafford GI, Finnie JF, Van Staden J.
    Journal: J Ethnopharmacol; 2008 Sep 02; 119(1):191-4. PubMed ID: 18639622.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: Several species of Podocarpus (Podocarpaceae) are utilized in treating ailments across the world. In Africa, four species are used traditionally in both animal and human health. AIM OF THE STUDY: To investigate the antimicrobial activity of Podocarpus species against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Candida albicans. MATERIALS AND METHODS: Six solvents of varying polarity were used for extraction. Antibacterial activity was assessed using the microdilution bioassay and for antifungal activity, the microdilution bioassay and (M27-P) broth dilution were used. RESULTS: All species exhibited antimicrobial activity with MIC values of less than 1mg/ml. Inhibition against Gram-positive bacteria was stronger with an MIC value of 98 microg/ml while for Gram-negative bacteria, the highest inhibition was against Klebsiella pneumoniae with an MIC value of 0.33 mg/ml. All species exhibited strong antifungal activity with the best MIC being 30 microg/ml after 48 h. CONCLUSIONS: All four species exhibited strong inhibition against all tested microbials, based on Aligiannis et al. [Aligiannis, N., Kalpotzakis, E., Mitaku, S., Chinou, I.B., 2001. Composition and antimicrobial activity of the essential oils of two Origanum species. Journal of Agricultural and Food Chemistry 40, 4168-4170] classification they can be classified as strong inhibitors.
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