ABSTRACT
This study the analyzed the cellular feasibility of Saccharomyces cerevisiae and Candida albicans in water suspension packed in glass flasks and in colorless (clear) and green bottles made of polyethylene terephthalate – PET – exposed to direct solar radiation, and with yeast cells added to the water obtained from the public supply system after neutralization of chlorine by sodium thiosulfate. The resulting cellular suspension was distributed in the different kinds of receptacles, which were placed on support trays covered with aluminum foil to increase the incidence of light. At the time intervals of 0; 8; 24; 28; 32; 48; 56; 72 and 76 hours (counting the night period) samples were taken and the cellular feasibility was calculated in a Neubauer chamber. Results showed that direct sun radiation was effective for the cellular elimination of S. cerevisiae and C. albicans present in the water suspension. Results also showed that exposure of water placed in flasks of glass and in colorless (clear) and green bottles made of polyethylene terephthalate for human consumption can be used to diminish water-transmitted disease risks.
KEY WORDS
Saccharomyces cerevisiae
;
Candida albicans
; solarization; water; disinfection
Thumbnail
Thumbnail
Thumbnail
Thumbnail
