Abstract: A process is disclosed for the preparation of citrus oils which are essentially pesticide free. The essentially pesticide-free citrus oil is prepared by gently distilling raw citrus oil in a short-path distillation column whereby the essentially pesticide-free citrus peel oil is collected as the distillant. Suitable citrus oils include citrus peel oils and citrus stripper oils with citrus peel oils being preferred. The essentially pesticide-free citrus peel oil generally contains less than about 1.6 ppm total pesticides, preferably less than about 0.5 ppm total pesticides, more preferably less than 0.1 ppm total pesticides, and most preferably less than 0.05 ppm total pesticides. The distillation residue contains essentially all the pesticides contained in the raw citrus peel oil.

Abstract: This invention provides for the separation of higher melting glycerides from vegetable oils. After the vegetable oil is refined and bleached, it is rapidly cooled to provide a blend that contains the vegetable oil and wax particulate; the blend then is filtered through a nonmetallic inorganic filter to remove the wax particulate from the vegetable oil such that the permeate oil has less than about 10 ppm oil at about 65.degree. F.

Abstract: A method for processing a flowable nonaqueous, high viscosity dispersion which includes a product, where the product is a particulate material having a particle size between about 1.0 microns to about 200 microns, is disclosed. The flowable dispersion has a viscosity from about 10 cps to about 500 cps at 140.degree. F. The method comprises cross flow filtering the dispersion through a porous nonmetallic inorganic filter having a pore size from about 0.5 to about 10 microns. The cross flow rate is in the range of from about 3.0 to about 9.0 feet/second (1 to 3 ml/sec) at least about 120.degree. F. and preferably there is at least one backflush at a rate of about 2 to about 5 seconds for every 3 to about 5 minutes of cross flow filtration.