| 摘要 |
PURPOSE: A method for preventing color change of green tea is provided to prevent green tea from yellowing or browning during manufacturing processes of a green tea product including drying, pulverizing, or extracting. CONSTITUTION: A method for preventing color change of green tea comprises a step of mixing green tea paste with metal yeast containing one or more metals selected from copper, zinc, iron, magnesium, and aluminum. The metal yeast is prepared by crushing a fungus body of the metal yeast by sonication. The method further comprises a step of drying the mixture of the metal yeast and the green tea paste, or heating diluted liquid of the mixture.
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