Studies on the Storage of Plucked Tea Leaves (Part 9)

Improvement of Storage Apparatus of Plucked Tea Leaves and Its Survey

Abstract

From the investigation of storing temperature at 15°C and 25°C, it was recognized that by using the thro ugh-flow storage equipment, shown in Fig. 1, the large volume of plucked tea leaves could be stored in small space of storing room.
In this report, storing conditions of two storage equipments, shown in Fig. 2 and 3, applied in green tea manufactory were investigated.
Plucked tea leaves were accumulated 65 cm. to 80 cm. on the height, and air was flowed through the charged tea leaves at the velocity of about 0.1-0.15 m./sec. By the throughflow, the temperature of the charged tea leaves was maintained at the room temperature. The accumulated tea leaves were ventilated discontinuously for one hour at an interval of 3 to 4 hours. Therefore, after about 15 hours of storage, the loss of weight of tea leaves was below 10%, and there was no significant deterioration in the qualities of green tea made from the stored leaves.