【摘要】 本文通过大量的实验，找出了提取茶叶咖啡因的较佳条件。在提取过程中主要采取了浸取、蒸馏、升华的方法，并对传统的升华工艺进行了改进。此法较浸取、浓缩、结晶法为优，效果好，得率可达２％．更多还原

【Abstract】 An effective agent has been found out by way of contrast of various experi-mental resuIts,for immersing and extracting caffeinum from the second一class tea. And aprocess containing immersion,distillation,sublimation of tea,with an improved sublimationmethod is offered in this paper.The effect of this method is better than immersion and crys-tallizing. The productive rate is 2%.更多还原