Tom qab saponification ntawm cov roj, tseem muaj qee yam khoom xws li sterols, polymer alcohols, hydrocarbons, pigments thiab fat-soluble vitamins uas yog insoluble hauv dej tab sis soluble hauv organic solvents. Cov tshuaj no raug hu ua cov khoom tsis zoo. Cov ntsiab lus yuav tsum raug txwv nyob rau hauv ib qho chaw. Qhov siab dua cov ntsiab lus unsaponifiable, cov roj tsis zoo.
