Abstract: The yield rate of effective component and physical characteristic indexes to value the clarification levels of tea infused liquid, the clarification effects of tea infused liquid by centrifugation, paper pulp filtration, air pump filtration, 0.2μm micro- filtration, 0.05μm micro-filtration and 0.8μm micro-filtration were studied on pilot-scale experiment. The analogy analysis of different clarification methods was also studied in order to give data references for tea comprehensive processing industry. The results showed that there is significant difference between the micro-filtration and paper pulp filtration, air pump filtration, centrifugation. Among them, 0.2μm micro-filtration and 0.05μm micro-filtration, paper pulp filtration and air pump filtration have the similar clarification characteristics under the corresponding type. Micro-filtration clarification excels the methods of paper pulp filtration, air pump filtration and centrifugation. Under the same operating parameters of micro-filtration , 0.2μm micro- filtration clarification is the best method of clarification.

Key words: tea comprehensive processing, clarification, micro-filtration, centrifugation, paper pulp filtration, air pump filtration