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ORIGINAL ARTICLE
Year : 2022  |  Volume : 6  |  Issue : 2  |  Page : 180-184

Screening the in-vitro Antibacterial Activity of Different Naturally Produced Coal and Coal Mediated Commercial Products on Clinically Isolated Pathogens


1 Department of Microbiology, Stamford University Bangladesh, Dhaka, Bangladesh
2 Department of Pharmacy, Stamford University Bangladesh, Dhaka, Bangladesh
3 Department of Pharmacy, Jagannath University, Dhaka, Bangladesh
4 Department of Microbiology, Stamford University Bangladesh, Dhaka, Bangladesh; Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan

Correspondence Address:
Mrityunjoy Acharjee
Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Oya 836, Suruga-ku, Shizuoka, 422-8529

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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/bbrj.bbrj_273_21

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Background: The rise of microbial illnesses caused by drug-resistant microflora is one of the most serious public health concerns, therefore identifying novel antimicrobial agents is crucial in combating multidrug-resistant bacterial strains. Methods: Present Investigation designated to assess the microbiological status of some naturally produced coal and coal mediated commercial products collected from Barapukuria Coal Mine Dinajpur and different retailer in Dhaka city, respectively through conventional cultural and biochemical tests. Moreover, the anti-bacterial potential of both categories of coal samples was also aimed to be checked by the agar well diffusion method and minimal inhibitory concentration (MIC) assay. Results: Out of 10 samples, total viable bacteria was estimated at high range in all the samples excluding the charcoal. In case of specific bacteria, only Staphylococcus spp. was found in both types of samples while Klebsiella spp. was found in coal mediated commercial products. Both categories of samples showed their anti-bacterial activity with satisfactory range of zone diameter (9 mm–26 mm). However, the naturally produced coal was unable to show their anti-bacterial activity against Bacillus spp., Shigella spp. and Vibrio spp. through agar well diffusion methods. Meanwhile, the minimal concentration of all the samples was successfully quantified as MIC value at which the bacterial growth was retarded. In case of naturally produced coal, the lowest concentration 4 mg/ml was recorded for wooden coal powder against Escherichia coli while the maximum concentration was estimated at 34 mg/ml. Conversely, the MIC value was varied between 4 mg/ml to 24 mg/ml in case of coal mediated commercial products. Conclusion: The results of this study suggest that the naturally produced coal and coal-mediated products have excellent antibacterial characteristics which indicating their economic potential for treating various infectious disorders.


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