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Abstract
The leaf, stem and root decoctions of Petiveria alliacea (referred to as Anamu or Apacin (Guatemala), Guinea–Hen weed (English), Awogba or Ojusaju (Yoruba), kanunfari (Hausa) and Akwa-ose (Igbo) have been used as a diuretic, antispasmodic, sedative, analgesic and anti-inflammatory agents in traditional medicine. Cold maceration and Soxhlet extraction techniques were used to obtain oils from the leaf, stem and root of P. alliacea. The oils were analysed for their antimicrobial properties using brothmicrodilution technique while their antioxidant properties were determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests. The antimicrobial tests on the following micro-organisms Salmonella typhi, Staphylococcus aureus, Bacillus subtilis, Escherichia coli,as well as the anti-fungi test on Rhizopus sp., and Aspergillus niger, showed that the hexane and ethanol cold leaf extracts were most effective in limiting the growth of Salmonella typhi with minimum inhibitory concentration (MIC)value of 3.125 µg/mL and minimum bactericidal concentration (MBC)value of 6.25 µg/mL. The ethanol leaf extracts using Soxhlet extraction technique were most effective at MIC value of 3.125 µg/mL on Staphylococcus aureus, Escherichia coli. Likewise, the hexane and ethanolcold leaf extracts were most effective in limiting the growth of Rhizopus sp. and Aspergillus niger with MIC value of 3.125 µg/mL and minimum fungicidal concentration (MFC) value of 6.25 µg/mL.
Highlights
Medicinal plants are of great importance to the health of individuals and communities [1].The use of plants as medicines involves the isolation of active compounds from plant components.Man has used plant-based medicines in the form of crude drugs, tinctures, teas, poultices, powders, and other herbal formulations for centuries[2].Indigenous knowledge of plant properties and activities are passed down from generation to generation in various parts of the world, and this knowledge has significantly contributed to the development of different traditional systems of medicine
The oils were analysed for their antimicrobial properties using brothmicrodilution technique while their antioxidant properties were determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests.The antimicrobial tests on the following micro-organisms Salmonella typhi, Staphylococcus aureus, Bacillus subtilis, Escherichia coli,as well as the anti-fungi test on Rhizopus sp., and Aspergillus niger, showed that the hexane and ethanol cold leaf extracts were most effective in limiting the growth of Salmonella typhi with minimum inhibitory concentration (MIC)value of 3.125 μg/mL and minimum bactericidal concentration (MBC)value of 6.25 μg/mL
The hexane and ethanolcold leaf extracts were most effective in limiting the growth of Rhizopus sp. and Aspergillus niger with MIC value of 3.125 μg/mL and minimum fungicidal concentration (MFC) value of 6.25 μg/mL
Summary
Man has used plant-based medicines in the form of crude drugs, tinctures, teas, poultices, powders, and other herbal formulations for centuries[2].Indigenous knowledge of plant properties and activities are passed down from generation to generation in various parts of the world, and this knowledge has significantly contributed to the development of different traditional systems of medicine. Petiveria alliacea is such a plant that has been used in different parts of the world, with numerous bio-active compounds [3]. The objective of the study was to extract and identify the components of the plant parts by GCMS analysis and in this paper we present the results of the antimicrobial and antioxidant properties of the extracts
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