Preparation process and production line of low caffeine instant tea

Abstract

The invention relates to a preparation process and a production line of low caffeine instant tea. The preparation process comprises the steps of crushing, water extraction, filtration, decaffeination,ultrafiltration, concentration and spray drying. The process is simple and the decaffeination effect is remarkable, so that the caffeine content in the instant tea product is less than 1%, thus reducing the harm of excessive intake of caffeine to human body, expanding the application surface of the instant tea, and being suitable for men, women and children. In addition, through the improvement of the traditional decaffeination device, the cooling water can exchange heat with the liquid in the kettle more quickly, thus improving the heat release efficiency of the caffeine adsorbent, further improving the caffeine adsorption effect, and facilitating transportation and subsequent maintenance.

Description

technical field [0001] The invention relates to the technical field of instant tea preparation, in particular to a preparation process and production line of low-caffeine instant tea. Background technique [0002] Instant tea is a solid beverage tea that can be quickly dissolved in water. Using finished tea, semi-finished tea, tea by-products or fresh leaves as raw materials, through extraction, filtration, concentration, drying and other processes, it is processed into a new type of granular, powdery or small flakes that are easy to dissolve in water without tea dregs. The beverage has the advantages of being convenient for brewing and carrying, and does not contain pesticide residues. [0003] The applicant applied for a Chinese patent on a production process of instant tea powder and a spray dryer discharger applied to the process on April 30, 2019 (application number CN201910363003.4). The tea leaves are pulverized and extracted, and the obtained extract is centrifuged...

AI Technical Summary

Problems solved by technology

[0004] Although this patent can be used to prepare instant tea powder, because tea leaves contain caffeine, instant tea made by traditional preparation techniques also contains a lot of caffeine, and high doses of caffeine can stimulate the central nervous system and affect sleep , increase blood pressure, increase the prevalence of rheumatoid arthritis, cause mutations, and cause premature birth of babies, etc.

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