研究了浓度、温度、压力各因素对100kDa超滤膜澄清分离速溶茶副产品中茶多酚的影响，并采用正交试验设计优化了超滤膜澄清分离的工艺条件。结果表明，在样液质量分数0.40%、温度35℃、压力0.138MPa的条件下分离试样，膜透过液中茶多酚含量达48.73%，得率为40.75%。说明超滤技术是澄清分离速溶茶副产品中茶多酚的有效手段之一。

The operational conditions were studied and discussed. The best operational conditions of 100kDa were as follows: concentration 0.40%,temperature 35℃,pressure 0.138MPa. At the optimal conditions, the content of tea polyphenols was 48.73%, final yield of tea polyphenols was 40.75%. The results showed it was feasible to separate tea polyphenols from instant tea by-product by ultrafiltration

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