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  • Title: Antioxidant and antibacterial activities of bark extracts from Commiphora berryi and Commiphora caudata.
    Author: Kumari R, Meyyappan A, Nandi D, Agrawalla BK, Chowdhury AA, Selvamani P, Latha S, Giri VS, Mukherjee J, Bandyopadhyay S, Jaisankar P.
    Journal: Nat Prod Res; 2011 Sep; 25(15):1454-62. PubMed ID: 21416452.
    Abstract:
    This study investigates the in vitro antioxidant and antimicrobial activities of eight extracts obtained from the dried barks of Commiphora berryi and Commiphora caudata (Burseraceae). The radical scavenging activity was assessed by 1,1-diphenyl-2-picryl hydrazyl (DPPH) and nitric oxide assays. The methanolic extracts of C. berryi and C. caudata showed significant DPPH radical scavenging activity, with IC₅₀ values of 26.92 and 21.16 µg mL⁻¹, respectively, and low radical scavenging activity against the nitric oxide assay. The antimicrobial activity of the plants was tested against the Gram-positive and Gram-negative bacteria. The ethyl acetate, chloroform and petroleum ether extracts of C. berryi showed good antibacterial activity against Pseudomonas aeruginosa, with a minimum inhibitory concentration (MIC) of 0.26 mg mL⁻¹, whereas the ethyl acetate and methanol extracts of C. caudata showed moderate antimicrobial activity with an MIC of more than 2.0 mg mL⁻¹ against P. aeruginosa compared to the petroleum ether and chloroform extracts, which showed an MIC of 1.1 mg mL⁻¹. The methanolic extracts of C. berryi and C. caudata also showed moderate cytotoxic activity against a human mammary carcinoma cell line (MCF-7), with values IC₅₀ of 82.6 and 88.4 µg mL⁻¹, respectively.
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