Method for solving creaming down of green-tea concentrated solution by utilizing compound-enzyme preparation
The technology of green tea concentrate and compound enzyme preparation is applied in the field of tea processing, which can solve the problems of poor solubility of tea concentrate, decrease of soluble solid content and quality, etc., so as to achieve good retention of tea aroma and color and reduce Bitter and astringent taste, the effect of improving the extraction rate
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Embodiment 1
[0022] A kind of method utilizing compound enzyme preparation to solve the method for green tea concentrated liquid after cooling muddiness, comprises the following steps:
[0023] 1) Extraction: Weigh green tea free of impurities and mildew, add 1.6% of green tea weight sodium isovitamin C into the green tea and place it in the extraction tank, then add water at 78°C in the extraction tank, mix well, and the The weight ratio of green tea to water is 1:18, the extraction temperature is 75°C, and the extraction time is 40 minutes;
[0024] 2) Primary filtration: filter the extracted green tea extract through a 180-mesh filter into an enzymolysis tank;
[0025] 3) Enzymolysis: Cool the green tea extract obtained by primary filtration to 40°C, adjust the pH of the green tea extract to 5.0; °C, the weight ratio of the enzyme preparation and its addition amount to the soluble solids content of the green tea extract is: 0.1% tannase, 4.0% acid protease, 1.7% pectinase, 0.4% beta gl...
Embodiment 2
[0039] A kind of method utilizing compound enzyme preparation to solve the method for green tea concentrated liquid after cooling muddiness, comprises the following steps:
[0040] 1) Extraction: Weigh green tea without impurities and mildew, add 1.8% of green tea weight sodium isovitamin C into the green tea and place it in the extraction tank, then add water at 75°C in the extraction tank, mix well, and the The weight ratio of green tea to water is 1:20, the extraction temperature is 70°C, and the extraction time is 25 minutes;
[0041] 2) Primary filtration: filter the extracted green tea extract through a 200-mesh filter into an enzymolysis tank;
[0042] 3) Enzymolysis: Cool the green tea extract obtained by primary filtration to 42°C, adjust the pH of the green tea extract to 4.5; ℃, the weight ratio of the enzyme preparation and its addition amount to the soluble solids content of the green tea extract is: tannase 0.25%, acid protease 0.8%, pectinase 3.0%, β-glucanase ...
Embodiment 3
[0056] A kind of method utilizing compound enzyme preparation to solve the method for green tea concentrated liquid after cooling muddiness, comprises the following steps:
[0057] 1) Extraction: Weigh green tea without impurities and mildew, add 2.0% of green tea weight sodium isovitamin C into the green tea and place it in the extraction tank, then add water at 80°C in the extraction tank, mix well, and the The weight ratio of green tea to water is 1:15, the extraction temperature is 78°C, and the extraction time is 32 minutes;
[0058] 2) Primary filtration: filter the extracted green tea extract through a 220-mesh filter into an enzymolysis tank;
[0059] 3) Enzymolysis: Cool the green tea extract obtained by primary filtration to 45°C, adjust the pH of the green tea extract to 4.8; then add a compound enzyme preparation to the above green tea extract, enzymatically hydrolyze for 50 minutes, and cool the enzymatic solution to 13 ℃, the weight ratio of the enzyme preparati...
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