Various methods for removing caffeine include column chromatography, distillation, solid phase extraction, and TLC chromatography. The discussion also humorously mentions using a civet, referencing the Kopi Luwak coffee process, but this is not a practical method for caffeine removal. Participants express uncertainty about the effectiveness of these methods and seek clarification on alternative techniques beyond methylene chloride. Additional resources and threads are shared for further exploration of caffeine isolation from tea leaves. Overall, the conversation highlights a mix of serious and lighthearted inquiries into caffeine extraction methods.
