Process for the supercritical extraction and fractionation of sp

Food or edible material: processes – compositions – and products – Processes – Extraction utilizing liquid as extracting medium

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426478, 426655, A23L 100

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active

051205580

ABSTRACT:
A process for extracting spice to obtain oleoresin and fractionating the oleoresin into fixed and essential oil components is described. The extraction is performed on the ground spice using supercritical fluid carbon dioxide under a pressure of from about 400 bar to about 600 bar and at a temperature of from about 80.degree. C. to about 120.degree. C. A cascading continuous extraction method is preferred. Oleoresin fractions are precipitated from the supercritical fluid at reduced pressures in the ranges 280-380 bar and 100-200 bar at 80.degree.-100.degree. C., while a last fraction is obtained from the non-critical fluid at a pressure of 30-50 bar and a temperature of 0.degree.-30.degree. C.

REFERENCES:
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patent: 4985265 (1991-01-01), Duboc et al.
Stahl et al, Dense Gases for Extraction and Refining, Springer-Verlag, Berlin, 1988.
Lenhard et al, Second International Symposium on Separation Sciences and Technology, Canadian Chem. Eng. Soc. Conf., Hamilton, Ontario, 1989.

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