Method for simultaneously preparing two kinds of instant tea powder with high yield

By combining alkali leaching and dynamic countercurrent extraction technology, the problems of low extraction rate and poor flavor quality in the existing tea extraction technology are solved, efficient extraction and quality improvement are achieved, and suitable for a variety of tea raw materials, significantly improving the value of the product.

CN119679023AInactive Publication Date: 2025-03-25中原食品实验室
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Patent Information

Application Number
CN202411988494.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Among the existing tea extraction technology, the extraction rate is low, about 30% of the contained ingredients cannot be effectively extracted, and it has an impact on the product's flavor quality, making it difficult to meet the dual needs of efficient extraction and quality requirements.

Method used

The combination of alkali leaching and dynamic countercurrent extraction is adopted, and the alkali-added countercurrent extraction technology is used to maximize the extraction of the contained ingredients in the tea, and the high-yield instant tea powder is prepared through the steps of centrifugation, concentration, conversion, preparation and high-temperature instant sterilization.

Benefits of technology

It significantly improves the total extraction rate of tea, maximizes the use of tea residue, reduces production energy consumption, and improves the flavor quality and value of the product. It is also suitable for a variety of tea raw materials, with wider application.

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Abstract

The invention provides a method for simultaneously preparing two instant tea powder with high yield. The method specifically comprises the following steps: S1, screening tea leaf raw materials; S2, carrying out pot-type extraction on the tea leaf raw materials under a high-temperature condition to obtain an extract liquid and tea residues; S3, carrying out countercurrent extraction on the tea residues under an alkali-adding high-temperature condition to obtain an extract liquid and tea residues; S4, centrifuging the obtained different extract liquids to obtain a purified liquid; s7, adjusting the pH value of the conversion solution to obtain a blended solution; S8, carrying out high-temperature instantaneous sterilization on the concentrated solution and the blended solution; and S9, drying by using a pressure type spray drying tower. The selected raw materials can be blended raw materials, various instant tea powder can be obtained at the same time, residual contained components in tea residues are dissolved out to the maximum extent in a mode of combining alkaline water and dynamic countercurrent extraction, the total extraction yield of tea leaves is remarkably increased, and the production cost is reduced. The invention provides a processing method for improving the extraction rate of tea leaves and simultaneously obtaining various instant tea powder.
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