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Effects of Ozone and Storage Temperature on Giardia Cysts
Author(s) -
Wickramanayake G.B.,
Rubin Alan J.,
Sproul Otis J.
Publication year - 1985
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1985.tb05591.x
Subject(s) - giardia lamblia , giardia , ozone , parasite hosting , biology , microbiology and biotechnology , chemistry , organic chemistry , world wide web , computer science
The effects of ozone and storage temperature on the survival of Giardia lamblia cysts, the cause of human giardiasis, and Giardia muris , a parasite of mice, were compared. The viabilities of the cysts were similar over a period of 25 days of storage in the range of ‐6° to 37°C; the optimum temperature for their long‐term survival was determined to be about 5°C. Ozone was extremely effective for inactivating cysts of both Giardia species, with G. muris being consistently more resistant than G. lamblia at pH 7 and 5°C and 25°C.