Roast coffee extract is contacted with {HEAD ~ a water immiscible organic solvent} to form decaffeinated extract and {TAIL ~ caffeine} containing spent solvent 
Roast coffee extract is contacted with { HEAD ~ a water immiscible organic solvent } to form decaffeinated extract and { TAIL ~ caffeine } containing spent solvent
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH