オゾン殺菌処理による養液成分の変性

概要

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When ozone was used to the sterilization of the solution of soilless culture, the increase or decrease of the nutrient ion elements in the solution and the variation of chemical characteristics were examined in a laboratory. In the case of cucumber Fusarium baccili, the treatment conditions which indicated strong lethal effects were the dissolved ozone concentration of over 0.25 mg/l and treated period of 10 min for microconidia, while the concentration of over 0.4 mg/l and the period of 5 min for chlamydospore, respectively. Therefore, the ion elements in each solution after exposed to two ozone concentrations of 0.25 and 0.5 mg/l and chemical characteristics as an electric conductivity (EC) and pH were measured, and each percentage of variations to control of 0 mg/l were calculated. As the results, in the case of the ozone concentration of 0.5 mg/l, the maximum percentage in every ion variation was below 18%, whereas each value of EC and pH together unchanged by the ozone treatment.
日本生物環境工学会の論文