PROBLEM TO BE SOLVED: To provide antioxidative functional hydro nano bubble liquor containing less acetaldehyde, which is produced by reductive fermentation technology of alcohol, and to provide a method and apparatus for oxidoreductive brewing based on facilitation of proliferation of microorganism under oxidative condition and reductive fermentation technology for a variety of liquors.SOLUTION: Oxidative degradation of generated pyruvic acid is suppressed, alcohol dehydrogenase is activated, generation of alcohol from acetaldehyde as an intermediate product is facilitated, and acetaldehyde remaining in a period for alcohol fermentation is also removed by gas exchange function of hydro nano bubble. This technology is a reductive fermentation technology of alcohol which facilitates fermentation and enhances alcohol yield, reduces acetaldehyde content, and enhances fresh smell of liquor, mellow taste and antioxidative function of liquor.SELECTED DRAWING: Figure 1
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