Application of -Radiolysed Natural Silica on the Fractionation of Virgin Olive Oil


The study of -radiolysed natural Iraqi silica (Ninivite) as obtained from the main rocks indicated that as we increase the irradiation time, the ratio of amorphous silica to the crystalline one is increased. A significant effect is recognized when irradiation time approximately two hours. The radiation causes cleavage of the polymeric structure of the silica and produce monomeric silica of amorphous type. The application of the irradiated silica to the separation of virgin olive oil indicates a large difference between one fraction and another as shown by the amount of fractions and I.R. measurements. I.R. measurements indicate that olive oil contains fatty acids, fatty acid esters, phenols, alcohol and some other minor components.