The in vitro antifungal effects of chlorine dioxide on water molds
2010
Borisutpeth, P., Khon Kaen Univ. (Thailand) | Kanbutra, P. | Hanjavanit, C. | Horiuchi, E. | Wada, S. | Hatai, K.
Chlorine dioxide possesses antifungal activity against three species, Saprolegnia diclina, Achlya bisexualis and Aphanomyces sp. Chlorine dioxide was more effective against Aphanomyces sp. than S. diclina and A. bisexualis. Three days of immersion in chlorine dioxide 100 ppm inhibited hyphal growth of S. diclina and A. bisexualis, and concentrations 50 ppm inhibited growth of Aphanomyces sp. Immersion in 500 microg/ml chlorine dioxide for 1-4 h killed the hyphae and concentrations of 32 to 63 microg/ml inhibited germination and killed zoospores of all three strains. The result suggests that treatment of hatchery water with 63 microg/ml of chlorine dioxide for 10 min can control the zoospores but does not inhibit the growth of fungal hyphae of these strains. We conclude chlorine dioxide is an effective antifungal agent on both the hyphal and zoospore stages of S. diclina, A. bisexualis and Aphanomyces sp.
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