Analysis of Phytochemical and Antibacterial Activity of Carissa spinarum Linn Crude Extracts

Journal Title: European Journal of Medicinal Plants - Year 2014, Vol 4, Issue 8

Abstract

Aims: To screen for the antibacterial activity of Carissa spinarum L. crude extracts against Escherichia coli and Staphylococcus aureus. The phytochemicals that are responsible for the bioactivity were also screened. Study Design: In vitro assay of antibacterial properties. Place and Duration of Study: Samples were collected from Samunge village at Loliondo in Ngorongoro district located in northern Tanzania. Extraction and phytochemical analyses were conducted at the Department of Traditional Medicine of the National Institute of Medical Research (NIMR) in Dar-es-Salaam, Tanzania. Antimicrobial bioassay was carried out at Department of Molecular Biology and Biotechnology at the University of Dar-es-Salaam between March 2013 and June 2013. Methodology: Disk diffusion test was used to determine antimicrobial activity of the plant extracts. Chemical tests were used to determine the group of phytochemicals present in the sample extracts. Results: Sensitivity testing results indicated that S. aureus was found to be more sensitive than E. coli. Carissa spinarum L. methanolic extracts were the most active constituents and demonstrated the zone of inhibition values of 11.66±0.42 mm and 13.33±1.53 mm in diameter against E. coli and S. aureus, respectively. The highest percentage values of relative inhibition zone diameter of 57.24% (E. coli) and 70.17% (S. aureus) were demonstrated by C. spinarum L. root methanolic extracts. In contrast, C. spinarum L. bark extracts did not show any antibacterial activity against the two bacterial species. Plant extracts demonstrated the minimum inhibitory concentrations ranging from 312 to 5000 μg/ml. Phytochemical screening of crude extracts revealed the presence of saponins, alkaloids, flavonoids, tannins and sterols. The presence of these phytochemicals in the extracts was linked with observed antibacterial activity. Conclusion: This study has revealed that the antibacterial activity of different extracts of C. spinarum L. was attributed to the presence of several phytochemicals. The study findings suggest likelihood of designing and developing potentially active antibacterial agents from C. spinarum L.

Authors and Affiliations

Clarence Rubaka, Patrick Ndakidemi, Hamisi Malebo, Francis Shahada

Keywords

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  • EP ID EP350032
  • DOI 10.9734/EJMP/2014/8236
  • Views 121
  • Downloads 0

How To Cite

Clarence Rubaka, Patrick Ndakidemi, Hamisi Malebo, Francis Shahada (2014). Analysis of Phytochemical and Antibacterial Activity of Carissa spinarum Linn Crude Extracts. European Journal of Medicinal Plants, 4(8), 937-945. https://www.europub.co.uk/articles/-A-350032