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Effects of Extraction Tea Mass Concentration on Tea
Sediment Formation in Green Tea Infusion
TANG Ping1 ,摇 CHEN Gensheng2 ,摇 YIN Junfeng2 ,摇 JIANG Yongwen 2 ,摇 XU Yongquan 2,*
(1郾 Hangzhou Vocational and Technical College, Hangzhou 310018, China ; 2郾 Engineering Research
Center for Tea Processing / Key Laboratory of Tea Biology and Resources Utilization , Ministry of Agriculture,
Tea Research Institute of Chinese Academy of Agricultural Sciences , Hangzhou 310008, China )
Abstract: Effects of extraction tea mass concentration on the main chemical components content, reversi鄄
ble sediment amount and irreversible sediment amount of green tea infusion were investigated. The results
showed that the solid concentration, contents of main chemical components, and the amount of reversible
and irreversible tea sediment all increased with the increasing of tea mass concentration. With the in鄄
creasing of tea mass concentration, the extracted yield of solids decreased while the solids concentration
in green tea infusion and the amount of tea sediment in the same solids concentration increased. Lower
tea mass concentration was helpful to obtain the higher yield and less sediment. The tea mass concentra鄄
tion of 0郾 1 g / mL may be the critical point. The higher tea mass concentration inhibited the extraction of
solids and easily produced sediment in green tea infusion.
Key words: tea mass concentration; irreversible sediment; reversible sediment; green tea infusion
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