|MadSci Network: Chemistry|
I can't here give you the whole procedure for several reasons, but hopefully I can give you some direction in finding it. The original procedure for extracting caffeine as a laboratory experiment was published in the Journal of Chemical Education, probably in the sixties. I am fairly sure that tea (bags) was used. Various modifications have been published there since. If you want to check this source, you can probably find it at the library of the nearest college which offers a bachelor's degree in chemistry. Many college level laboratory manuals have included this type of experiment. You might check with the organic chemist(s) at the nearest college. They probably can provide you with a reference or a procedure. I am not sure that I have seen a procedure that begins with the beans. Most begin with tea or ground coffee. As for the measurement of the content, I am not as familiar with this area although I seem to remember that such a procedure may have been published also in the Journal of Chemical Education. You might even be able to go to the Web site of the Journal of Chemical Education (at the American Chemical Society) and search there. You should be aware of the fatc that most of these extraction procedures will require the use of special solvents which are volatile and which should be used only in a good fume hood. I hope that this has been of some help. Jerry Franzen Thomas More College 333 Thomas More PArkway Crestview Hills, KY 41017] firstname.lastname@example.org 606-344-3377
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