湖北林业科技

Abtract: Many ways to extract caffeine from tea, but these ways mainly had low yield and time-consuming,where we discussed and explored the improvement of extraction of caffeine from tea. The five kinds of methods that water extraction, ethanol extraction, organic solvent extraction, soxhlet extraction method and microwave method were discussed. The authors Compared these different kinds of methods and their results, considered the yield of caffeine by microwave method was higher, the time-consuming was shorter, and this method was practicable.