The bottom layer will be the organic layer during the aqueous tea dichloromethane extraction process.
The tea should be put in a 125 ml Erlenmeyer flask. Add 10 ml of 0.2 M NaOH and 20 ml of dichloromethane. Extraction: To extract the leaves, tightly seal the flask and gently swirl it for 5 to 10 minutes. While the majority of the other compounds in the leaves do not dissolve in the solvent, caffeine does.
Dichloromethane has a higher solubility for caffeine than water. As a result, when dichloromethane is added to a coffee solution that contains caffeine, the caffeine will move from the coffee solution to the dichloromethane solvent. A separatory funnel can be used to separate the caffeine-containing solvent from the coffee solution.
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