Research Information System
Rivista Italiana delle Sostanze Grasse, vol.99, no.1, pp.37-48, 2022 (SCI-Expanded)
This study aims to experimentally evaluate the influence of agro-industrial based wastes on improving the quality of sunflower oil. A synthetic adsorbent and the ashes of barley husk, wheat bran, and oat husk were selected and utilised as filtration-aid adsorbents for the regeneration of used frying oil. The surface properties, crystal morphology, and framework structures of the ash-based adsorbents were characterized, and the mineral compositions of adsorbents were also determined. The results indicate that the crystal structure of adsorbent materials is responsible for its adsorption capacity and removal of impurities from the frying oil. Wheat bran ash was more effective in the adsorption of degradation products from oil, in reducing free fatty acid, p-anisidine values and also in preventing trans-fatty acid formation since it has the highest adsorption capacity and SiO2 level. Oat husk ash drew more attention due to its largest surface area and ability to reduce the peroxide value of oils. Treatment of frying oil with agro-industrial based ashes have been found to improve the oil quality and exhibit an effect like Magnesol XL.