Antimicrobial Efficacy of Selected Disinfectants
[1]
Chioma C. Okore , Biology Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
[2]
Ogechukwu N. Mbanefo , Biology Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
[3]
Bright C. Onyekwere , Chemistry Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
[4]
Simon C. Onyewenjo , Biology Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
[5]
Agaptus U. Ozurumba , Biology Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
[6]
Chinyere A.M. Abba-Father , Biology Department, Federal Polytechnic Nekede Owerri, Imo-State, Nigeria.
The antimicrobial effectiveness of four selected disinfectants (Dettol, Izal, Z-Germicide and Jik) was determined using agar diffusion (paper disc) method. Phenol coefficient was used to compare the effectiveness of these disinfectants against phenol. The test organisms used include Escherichia coli, Staphylococcus aureus, Streptococcus spp and Mucor spp. The undiluted concentrations of the disinfectants showed varying zones of inhibition against the test organisms, on E.coli it ranged from 17mm (Izal) to 25mm (Jik), on Staph aureus, 9mm (Jik) to 28mm (Dettol), whereas on Streptococcus spp it ranged from 8mm (Jik) to 30mm (Dettol). The different dilutions 21 to 23 of the disinfectants on E. coli ranged from 0mm (Izal) to 17mm (Jik), 7mm (Z-Germicide) to 24mm (Dettol) on Staph aureus and it ranged from 7mm (Z-Germicide, Jik) to 25mm (Dettol) on Streptococcus spp. For the fungi the zones of inhibitions of the diluted disinfectants ranged from 43mm to 53mm (Z-Germicide), 65mm to 100mm (Dettol), from 35mm to 110mm (Jik). The undiluted concentrations of the disinfectants ranged from 70mm (Z-Germicide) to 140mm (Dettol). The result showed that Dettol was most effective against the test organisms than the other disinfectants. Izal recorded the least antimicrobial activity. The phenol coefficient values also showed that Dettol was better when compared with the other tested disinfectants. Disinfectant for external uses is necessary to avoid related infections or diseases caused by these test microorganisms.
Antimicrobial, Disinfectants, Dettol, Izal, Jik, Phenol-Coefficient, Z-germicide
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