Research Note: Inactivation Efficiency of Ozonated Water for Fusarium oxysporum Conidia Under Hydroponic Greenhouse Conditions |
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Authors: | Noriyuki Igura Masatoshi Fujii Mitsuya Shimoda Isao Hayakawa |
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Affiliation: | Laboratory of Food Process Engineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , Fukuoka City, Fukuoka, Japan |
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Abstract: | Ozonated water was used for inactivation of Fusarium oxysporum conidia in sterilized water and inorganic soil-less nutrient medium at different treatment temperatures. F. oxysporum conidia were effectively inactivated in both water and nutrient media and the inactivation curves were almost same at 15°C, 25°C and 30°C. Approximate 4-log orders of F. oxysporum conidia were killed when the ozonated water with initial ozone concentration of 1.0 ppm had been used. The surviving curves, however, were characterized by a tailing-off effect, and the effect was related to the residual ozone concentration in the ozone treated suspensions. |
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Keywords: | Ozone Fusarium oxysporum Greenhouse Conditions Hydroponic Greenhouse Agricultural Applications |
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