Abstract: Disclosed herein is a method for producing biodiesel in the form of fatty acid alkyl ester by esterifying oils-and-fats, including animal or vegetable oils-and-fats or waste thereof, with supercritical alcohol. According to the disclosed method, it is possible to produce high-purity fatty acid alkyl ester at low cost and high productivity.

Abstract: Methods for isolating taxol and derivatives thereof with high purity are described. The methods include a supercritical fluid and a cosolvent extraction step, a liquid—liquid separation step, and a column chromatography step. An apparatus for isolating Taxol and derivatives thereof that allows the method steps to be performed online also is described.

Abstract: 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.

Abstract: Methods for isolating taxol and derivatives thereof with high purity are described. The methods include a supercritical fluid and a cosolvent extraction step, a liquid-liquid separation step, and a column chromatography step. An apparatus for isolating Taxol and derivatives thereof that allows the method steps to be performed online also is described.