High purification, foreign matter removal and sterilization process for tea leaves

Abstract

The invention provides a high purification, foreign matter removal and sterilization process for tea leaves. The high purification, foreign matter removal and sterilization process for the tea leavescomprises the steps of (1) picking, wherein fresh tea leaves are picked; (2) pretreatment, wherein after a TiO2 aqueous solution is sprayed on the picked fresh tea leaves, the picked fresh tea leavesare placed under a low-pressure mercury lamp for irradiation, and residual pesticides in the tea leaves are removed; (3) washing, the pretreated tea leaves are washed and drained; (4) tedding, whereinthe washed tea leaves are tedded; (5) water removing, wherein water removing is carried out on the tedded tea leaves; (6) rolling, wherein the tea leaves after water removing are rolled; (7) drying,wherein the rolled tea leaves are subjected to microwave vacuum drying until the moisture is below 5%; (8) wind screening, wherein the dried tea leaves are screened by adopting a wind screening mode;(9) packaging, wherein the screened tea leaves are weighed and packaged. The tea leaves produced through the process is clean and sanitary, contains very low foreign matter residues such as microorganisms, pesticide residues and heavy metal, and completely meets international standards, thereby greatly improving the drinking safety of the tea leaves.

Description

technical field [0001] The invention relates to the technical field of tea processing, in particular to a high-purification process for deodorizing and sterilizing tea. Background technique [0002] As the hometown of tea, China has a history of thousands of years of tea making and drinking. The traditional tea production process is roughly divided into multiple procedures such as picking greens, spreading greens, killing greens, kneading, and drying. At the same time, due to the influence of outdated processing equipment and poor sanitation conditions in the processing environment, harmful microorganisms and other foreign matter may also be introduced, which has caused great hidden dangers to the drinking safety of tea. Contents of the invention [0003] The purpose of the present invention is to provide a high-purification process for deodorization and sterilization of tea. The tea produced by this process is clean and hygienic, with extremely low residues of foreign mat...

AI Technical Summary

Problems solved by technology

[0002] As the hometown of tea, China has a history of thousands of years of tea making and drinking. The traditional tea production process is roughly divided into multiple procedures such as picking greens, spreading greens, killing greens, kneading, and drying. At the same time, due to the influence of outdated processing equipment and poor sanitation conditions in the processing environment, harmful microorganisms and other foreign matter may also be introduced, which has caused great hidden dangers to the drinking safety of tea.