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KMID : 0377619710200030275
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Korean Jungang Medical Journal
1971 Volume.20 No. 3 p.275 ~ p.284
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Antibacterial Activities of the Disinfectants Under Different Experimental Conditions
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Abstract
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Since the antimicrobial activities of disinfectants are known to be modified by the various factors, it was thought worthwhile to investigate the activities of some commercially available disinfectants under the varied conditions.
Thus, the activities of disinfectants A,B,C,D, and E, all of which may be purchased at the drug-stores, to the stock and freschly isolated strains of Staph. aureus, Es. coli and Ps. aeruginosa were investigated at the environmental temperatures of 5°C, 20°C, and 30°C.
The results of observation might be summarized as follows:
1) The antibacterial effects of disinfectants A were more powerful in lower temperature than in higher temperature tested. After 15 minutes of exposure at 5°C. to the 1 : 250 dilution, it appeared to have caused the loss of viability of all the strains.
2) The antibacterial effects of disinfectant B increased with the elevation of temperature. After 10 minutes of exposure at 30°C. to the 1 - 625 dilution, it appeared to have caused the loss of viability of all the strains.
3) Under the experimental conditions employed, disinfectant C did not show any antibacterial activity.
4) The antibacterial activity of disinfectant D was found stronger at 20°C, or 30°C,
than at 5°C. After 10 minutes of exposure at 20°C. to the 1 : 120 dilution of the
disinfectant, all the strains appeared to have lost the viability.
5) The antibacterial effects of disinfectant E (Phenol) increased with the elevation of
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