METHOD FOR LIQUID FERMENTATION OF BLACK TEA JUICE BY USING AGED GREEN TEA
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United States of America Patent
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Issued Date -
Jul 27, 2023
app pub date -
Aug 16, 2022
filing date -
Jan 24, 2022
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Abstract
The present disclosure discloses a method for liquid fermentation of black tea juice by using aged green tea and belongs to the technical field of tea leaf processing. The method comprises the following process steps: mixing aged green tea with hot water for a water bath-assisted extraction; adding a tannase into a crude catechin extract for a water bath-assisted enzymolysis; freeze-withering fresh tea leaves; homogenizing the freeze-withered leaves; pouring a homogenate into a primarily enzymolyzed crude catechin extract, adding a β-glucosidase for secondary enzymolysis and performing fermentation; and treating a fermentation broth by microwave, and performing filtration and cooling to a room temperature.
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