Ortho-phenylphenol을 주성분을 하는 훈증소독제의 Pseudomonas aeruginosa와 Enterococcus hirae에 대한 살균효과

Abstract

This test was performed to evaluate the bactericidal efficacy of a fumigation disinfectant containing20% ortho-phenylphenol against Pseudomonas aeruginosa (P. aeruginosa) and Enterococcus hirae (E. hirae). Inpreliminary tests, P. aeruginosa and E. hirae working culture suspension number (N value) were 2.8 × 108 and4.0 × 108CFU/mL, respectively. And all the colony numbers on the carriers exposed to the fumigant (n1, n2, n3) werehigher than 0.5N1 (the number of bacterial test suspentions by pour plate method), 0.5N2 (the number of bacterial testsuspentions by filter membrane method) and 0.5N1, respectively. In addition, the mean number of P. aeruginosa andE. hirae recovered on the control-carriers (T value) was 2.8 × 108 and 3.4 × 106 CFU/mL, respectively. In the bactericidaleffect of the fumigant, the reduction number of 2.8 × 108 (d value) was 6.46 and 5.19 logCFU/mL, respectively. According to the French standard for the fumigant, the d value for the effective bactericidal fumigant should be overthan 5 logCFU/mL. With the results from this study, the fumigation disinfectant containing 20% ortho-phenylphenolhas an effective bactericidal activity, then the fumigant can be applied to disinfect food materials and kitchen appliancescontaminated with the pathogenic bacteria.