Spontaneous Precipitation of Caffeine from Supercritical Extracts of Roasted Coffee Beans

The spontaneous precipitation of caffeine from black coffee bean extracts obtained by extraction with supercritical carbon dioxide has been found. This effect is observed for various types of coffee when using pressure values of the supercritical extractant on the order of 40–50 MPa. Two valuable pr...

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Veröffentlicht in:	Theoretical foundations of chemical engineering 2021-09, Vol.55 (5), p.1010-1015
Hauptverfasser:	Prokopchuk, D. I., Kostenko, M. O., Pokrovskiy, O. I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Caffeine Carbon dioxide Chemistry Chemistry and Materials Science Coffee Engineering Engineering, Chemical Industrial Chemistry/Chemical Engineering Science & Technology Supercritical gas extraction Technology Technology of Organic Substances
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Zusammenfassung:	The spontaneous precipitation of caffeine from black coffee bean extracts obtained by extraction with supercritical carbon dioxide has been found. This effect is observed for various types of coffee when using pressure values of the supercritical extractant on the order of 40–50 MPa. Two valuable products, caffeine and decaffeinated coffee oil, can be obtained by the simple centrifugation of CO 2 extracts of coffee beans, which can be used in the food and cosmetic industries.
ISSN:	0040-5795 1608-3431
DOI:	10.1134/S0040579521050146