GREEN TEA PROCESSING METHOD Russian patent published in 2019 - IPC A23L3/01 A23F3/22 

FIELD: food industry.

SUBSTANCE: invention relates to food industry, in particular, to tea processing methods. Green tea treatment method includes inactivation of oxidation-reduction enzymes by thermal action on green tea leaves for several minutes with subsequent treatment of green tea leaves to residual moisture content of 60–75 %, tea sheet twisting, tea sheet drying in vacuum using electromagnetic microwave field and sorting tea leaf. Leaf of green tea leaves is dried in three stages with total duration of 85–157 minutes. At the first stage, a tea leaf formation is heated with moisture content of 60–75 % of an electromagnetic microwave field at constant pressure in a drying chamber. At the second drying stage, the pressure in the drying chamber and the heating temperature are increased. At the third drying stage, heating of the formation of tea leaves is stopped, and pressure in the drying chamber is reduced by the moment of temperature reaching in the drying chamber of room temperature (workshop temperature).

EFFECT: invention usage will allow to simplify the technology of green tea drying, reduce energy consumption, as well as extend the green tea storage life.

3 cl, 2 tbl