Patent ID: 7837873

Claim:
A method for producing botanical oil with no by-produced trans fatty acids comprising the steps of: (1) introducing a raw oil obtained by squeezing plant seeds into a column having activated carbon filled therein from an upper part of the column; (2) allowing the oil to transfer in the column by the action of gravity toward a lower part of the column and allowing the oil to pass through a first filter cloth placed adjacent to a bottom part of the activated carbon layer, wherein the filter cloth has a pore size of 13 μm to 45 μm, and allowing the oil to discharge from the column through a second filter cloth having a pore size of 8 μm to 13 μm located downstream of the first filter cloth with a spacing in between that is not filled with activated carbon; and (3) introducing the oil discharged from the column into an activated carbon separation device comprising a filter having a pore size of 3 μm-7 μm, and discharging from said separation device an oil having no activated carbon microparticles by the action of a sucking force.