- 生活衛生 (ISSN:05824176)
- vol.43, no.3, pp.89-96, 1999-05-30 (Released:2010-03-11)
Fungal and yeasty contamination in bathrooms was studied using the swabbing method. The average number of fungi was larger on the ceiling and upper parts of the wall than that of the floor and lower parts of the wall. In the upper parts of the bathroom, Cladosporium was the predominant fungi in both summer and winter, followed by Exophiala, Aureobasidium, Phoma and Acremonium. In the lower parts of the bathroom, Exophiala was predominant, and represented around 80% of all fungi. Rhodotorula was the predominant yeast in all parts of the bathroom. Cladosporium, more than Exophiala, Rhodotorula and others, seemed to affect the dirtiness of bathrooms. Additionally, the growth rate of each type of fungus on the walls of the bathroom were compared after cleaning. It was observed that the number of fungi after 2 months was less than half that of pre-cleaning.Ventilation was effective in reducing fungal and yeasty contamination. The effects of moisture on fungal contamination was more remarkable in the upper parts of the bathroom than in the lower parts, including the floor. The effects of cleaning were distinctly recognized on the floor, because the frequency of cleaning the floor is much higher than that of the upper parts of the bathroom.