| 摘要 |
The invention relates to a method for extracting and preparing alkaloids from plants using supercritical fluid extracting technology and alkaloids prepared by said method. Specifically, the invention relates to a method of preparing alkaloids by mixing plants with carbon dioxide as a major solvent and 1 to 20 parts by weight of at least one alkaline cosolvent selected from a group consisting of methanol, ethanol, water or a mixture thereof wherein 2 to 18 (v/v) % of diethylamine or triethylamine is dissolved in the cosolvent based on 100 parts by weight of carbon dioxide at the temperature of 70 to 90° C. and under 4000 to 6000 PSI of pressure in a supercritical extracting apparatus to extract the alkaloid, and then separating, filtering and purifying the alkaloid using the chromatography, and to alkaloids prepared by said method.
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