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Evaluation of some medicinal plants against Escherichia coli, Salmonella spp. and Staphylococcus aureus
| Content Provider | Semantic Scholar |
|---|---|
| Author | Meghla, Nigar Sultana Hossain, Maruf Alam, Badrul Paul, Lovely Rani Sultana, Nigarin |
| Copyright Year | 2016 |
| Abstract | Since the beginning of human civilization, medicinal plants have been used by mankind for its therapeutic value and even in modern times have formed the basis of many pharmaceuticals in use. The aim of the present study was to evaluate the antimicrobial activity of different extracts of Piper betle, Boerhavia diffusa, Oxalis corniculata, Centella asiatica, Camellia sinensis, Curcuma longa and Allium cepa traditionally used in Bangladesh. The antimicrobial activity of these different solvent extracts were tested against Gram-positive (Staphylococcus aureus) and Gramnegative bacterial species (Escherichia coli and Salmonella spp.) by observing the zone of inhibition by disc diffusion method. The tested bacterial species were isolated from hospital waste water sample and fresh poultry meat samples where Chloramphenicol was used as standard for antibacterial assay. The results of the study revealed that the ethanolic, methanolic, and aqueous extracts of almost all the seven herbal species successfully showed to be effective against the tested Gram-positive and Gram-negative bacteria with only negative result observed in case of Centella asiatica. The methanolic and water extract of Boerhavia diffusa was found to be slightly effective producing a shorter zone of inhibition. Among these medicinal plant products, Camellia sinensis and Piper betle was found to be more effective against the tested bacterial species where methanolic extracts showed maximum zone of inhibition against Gram-positive (S. aureus with zone of inhibition of 12 mm and 11 mm respectively) and Gram-negative bacteria (e.g. Salmonella spp. with zone of inhibition of 16 mm and 14 mm). The result confirmed the presence of antibacterial activity of Piper betle extract and other five medicinal plant extracts against various human pathogenic bacteria which should be further tested for other pathogenic multi drug resistant bacteria and could be used as an effective biocontrol agent in future. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ijnss.org/wp-content/uploads/2016/01/IJNSS-V3I1-05-pp25-31.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
