| 摘要 |
PURPOSE: A method for manufacturing the extraction water for green tea from deep sea water is provided to produce the extraction water which is hygienically safe and is suitable for green tea. CONSTITUTION: A method for manufacturing the extraction water for green tea from deep sea water comprises the steps of warming deep sea water at 20~30°C; pretreating it by at least one process of sand filtration, precision filtration, ultrafiltration and nanofiltration; desalting the pretreated one by at least one process of reverse osmosis filtration, electrodialysis, electrolytic extraction, freezing, evaporation, condensation or ion exchange process; treating it with alkali of pH 9-11; removing a boron compound by reverse osmosis filtration; adjusting pH to be 5.8~8.5; and producing the extraction water for green tea by reforming the water.
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