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| Articles
by
M.H. Morshed |
Total Records (
1 ) for
M.H. Morshed |
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M.H. Morshed
,
M. Shamim Hossain
,
M. Ibrahim
,
M.Z. Shafique
,
M.O.H. Helali
,
A. Samad
,
M.S. Islam
and
M.A. Islam
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The aim of the present study was to evaluate the antibacterial
characteristic of the four synthetic plant hormones Indoleacetic acid (IAA),
2,4- dichlorophenoxyacetic acid (2,4-D), Naphthaleneacetic acid (NAA) and
Gibberellic acid (GA). Antibacterial potency was assessed by measuring the zone
of inhibitions on semi-solid nutrient agar bacterial inoculating petri dishes.
NAA and IAA gave potent antibacterial activity at concentration of 150 μg disc-1
giving zones at 26-35 mm. Bacteriostatic and bactericidal concentrations against
the pathogens were determined by serial dilution technique. Bacteriocidal
concentrations of the tested principles were found to be significantly higher
than their respective bacteriostatic concentrations. Minimum inhibitory
concentrations that are bacteriostatic concentrations of the tested compounds
were found at 32-128 μg mL-1 whereas, bactericidal concentrations
established at 256-512 μg mL-1 against eight pathogenic bacteria
Streptococcus -haemolyticus, Staphylococcus aureus, Pseudomonas
aeroginosa, Shigella dysenteriae, Shigella flexneri, E.
coli, Salmonella typhi and Klebsiella pneumoniae. |
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