[Conditions of extraction of caffeine by organic solvents depending on the medium pH].
D002110:Caffeine / Q000302:isolation & purification*; D003124:Colorimetry; D006863:Hydrogen-Ion Concentration; D008722:Methods; D010783:Photometry; D012997:Solvents
D012997:Solvents; D002110:Caffeine
Umovy skastraktsiï kofeinu orhanichnymy rozchynnykamy v zaleshnosti vid pH seredovyshcha.