Summary: | 碩士 === 國立宜蘭大學 === 園藝學系碩士班 === 98 === The effect of electrolyzed oxidizing (EO) water on seed imbibitions of 9 crops, including radish, Chinese cabbage, pea, alfalfa, melon, pumpkin, wheat, rice and green onion, was investigated. The germination test showed that the available chlorine and imbibitions time would not affect the germination percentage. But EO water of 1000 mg.L-1 available chlorine would decrease the elongation of hypocotyles. The effect of 100, 200 and 1000 mg.L-1 EO water applied as a foliar spray three times per week on seedlings of radish, Chinese cabbage, melon, pumpkin, alfalfa, pea, and wheat under planting in soil conditions in two weeks is studied. The result showed the mass and height of seedlings didn’t decrease significantly, but 1000 mg.L-1 EO water spraying would decrease the content of chlorophyll dramatically, and the content of total soluble proteins changes depending on species. The effectiveness of total plate count (TPC) reduction of EO water washing on sprouting vegetables was also been studied. For freshly harvested alfalfa, pea, and wheat sprouts on which TPC were initially 8.03, 7.85, and 7.24 log CFU‧g-1, respectively. Disinfection with 25 mg.L-1 EO water reduced TPC on alfalfa sprouts by 1.59 log CFU‧g-1, and 50 mg‧L-1 EO water reduced TPC by 2.01 log CFU.g-1. On pea and wheat sprouts TPC reduced by 0.9 ~ 1.37 log CFU.g-1. Comparative to distilled water treated and non treated sample, EO-treated sample did not show significant increase of TPC during storage. 50 mg.L-1 EO water applied as a foliar spray three times per week on green onion under field conditions to the prevention and control of rust did not produce any visible phytoxicity. Therefore, using EO water for decontamination of seed and sprouting vegetables was recommended to be an effective method of controlling microflora.
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