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Bioactive constituents and antibacterial screening of two Nigerian plant extracts against selected clinical bacteria

Background: The growing desires to combat antibiotic resistance among pathogenic bacteria necessitate the need to search for new antimicrobials agents from other sources such as plants. Objectives: The present study investigated the antibacterial activities and bioactive components of Nymphaea lotus...

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Published: 2016
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LEADER 00000njm a2000000a 4500
001 oai:repository.ui.edu.ng:123456789/11510
042 |a dc 
720 |a Odumosu, B. T.  |e author 
720 |a Salawu, O. T.  |e author 
720 |a Oyeyemi, I.  |e author 
720 |a Alabi, O. S.  |e author 
720 |a Rufai, T. R.  |e author 
720 |a Odunukan, O.  |e author 
260 |c 2016 
520 |a Background: The growing desires to combat antibiotic resistance among pathogenic bacteria necessitate the need to search for new antimicrobials agents from other sources such as plants. Objectives: The present study investigated the antibacterial activities and bioactive components of Nymphaea lotus and Spondias mombin against selected clinical bacteria Material and Methods: Extracts of N. lotus and S. mombin were prepared by 72 hours maceration in 70% methanol. The antimicrobial susceptibility testing (AST) of Escherichia coli, Klebsiella pneumoniae, Enterobacter aerogenes, Salmonella typhi, Staphylococcus aureus, Citrobacter freundi and, Klebsiella oxytoca against the two extracts was carried out by disk diffusion method while minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) was by agar-well dilution and broth dilution method, respectively. The bioactive compounds of the plants were identified by Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Results: Extracts of N. lotus showed better antimicrobial activities than S. mombin against all the clinical bacterial isolates with an MIC range of 3.13 – >12.5mg/mL compared to S. mombin with MIC range of 6.25 – >12.5mg/mL. The GC-MS results revealed the presence of 21 and 25 compounds for N. lotus and S. mombin respectively. Benzoic acid derivatives were in abundance in both plants with approximately 71.5% and 82.1% in N. lotus and S. mombin respectively. Conclusions: The findings from this study provided further evidence on their ethno-botanical claims and additional information on the potentials of the studied plants as effective medicinal plants with antimicrobial activity against clinical bacteria. This highlights the need for continuous exploration of medicinal plants for novel compounds with better antimicrobial property as option for the treatment of resistant bacterial infection 
024 8 |a 0189-8434 
024 8 |a ui_art_odumosu_bioactive_2016 
024 8 |a Nigerian Journal of Pharmaceutical Research 12(2), pp. 123-133 
024 8 |a https://repository.ui.edu.ng/handle/123456789/11510 
653 |a Nymphaea lotus 
653 |a Spondias mombin 
653 |a Bioactive components 
653 |a Antimicrobials 
245 0 0 |a Bioactive constituents and antibacterial screening of two Nigerian plant extracts against selected clinical bacteria