Process for manufacture of mild coffee
Реферат: Caffeine is brought into an aq. soln., extd. with supercritical or liq. CO2 and recovered from CO2 soln. Crude coffee is first treated, at higher temp., with water contg. same concn. of soluble coffee constituents, with exception of caffeine. Caffeine is stripped from aq. exn. soln. by using liq. CO2, at >15 degrees, or super-critical CO2. Residual soln. is re-used s extractant. Caffeine is recovered from extract, pref. with water. Caffeine-free or caffeine-deficient coffee can be prepd. without loss in quality and with simultaneous recovery of caffeine. When using liquid CO2, aq. extn. soln. is pref. treated at 20-31 degrees C and 80-300 (250) bar. With super-critical CO2, temp. is esp. 31-95 (60-95) degrees C under 75-400 (120-300) bar.
Process for the continuous manufacture of a powdered extract from plant materials, device for carrying out the process and application of the process
Номер патента: FR1293324A. Автор: . Владелец: Afico SA. Дата публикации: 1962-05-11.