METHOD FOR SEPARATING ACID OIL FROM ESSENTIAL PLANT OIL

摘要

PURPOSE:To readily separate an acid oil rapidly at a low cost by first making an acid oil contained in an essential oil from a cupresineous plant adsorbed on a specific amorphous silicate of a heavy metal and then performing extraction with a lower alcohol. CONSTITUTION:An essential oil from a cupressineous plant is optionally dissolved in a solvent to obtain a solution having a concentration of 0.01-15g/l. Added to the solution is an amorphous silicate of a heavy metal of the formula Mo(SiO2)xH2O (wherein M is a divalent metal ion and x is 2-5) in a concentration of 10-100wt.% relative to an acid oil present in the solution. The mixture is stirred at room temperature for 10-180min to have the acid oil contained in the essential plant oil selectively adsorbed on the amorphous silicate of a heave metal. Thereafter, any unadsorbed component is removed with a solvent, any drying is performed at room temperature to 120 deg.C to recover the amorphous silicate of a heavy metal having the acid oil adsorbed thereto. Next, the acid oil is extracted from the silicate with a lower alcohol.