2006-07-20 10:23:40 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Supercritical CO2 extraction is the current "state of the art" method. The coffee tastes pretty much the same as before the process but the caffiene is extracted. See this link:
http://en.wikipedia.org/wiki/Supercritical_carbon_dioxide
Other option is solvent extraction, usually using chlorinate solvents (eg chloroform). Less favoured these days due to bad press regarding the solvents.
BTW, caffeine is not THAT toxic. LD50 (oral, rat) is about 350mg/kg.
2006-07-20 19:21:18 · answer #1 · answered by Bruce H 3 · 0⤊ 0⤋
Isolating caffeine from coffee is only a matter of extraction; however, depending on your experience, can be easy to almost impossible.
2006-07-20 15:26:03 · answer #2 · answered by rxn 1 · 0⤊ 0⤋
Pure caffeine is a poison. If you could make it, it would kill you in a very small quantity.
2006-07-20 10:35:29 · answer #3 · answered by Anonymous · 0⤊ 0⤋
here is an organic chemistry exercise:
2006-07-20 16:57:15 · answer #4 · answered by a simple man 6 · 0⤊ 0⤋
stick to no-doz man lol.
2006-07-20 10:30:49 · answer #5 · answered by punkass_sk8er2007 1 · 0⤊ 0⤋