Refined sunflower oil

Refined sunflower oil, sunflower oil by squeezing method or leaching the preparation of crude oil, which contains pectin, free fatty acids, moisture, mechanical impurities, pigments, odor substances, waxes, including sulfides, oxides grease and so on. The presence of these impurities is not conducive to the use of oils and fats or fat intolerance storage and processing, needs to be removed. Refined sunflower oil generally after degumming, deacidification, bleaching, deodorization, several processes. 
sunflower Oil refining purposes: First, to remove harmful impurities that are more nutritious oils; two are making a variety of foods to meet the needs of three is to increase economic efficiency. 
(1) removal of crude oil degumming that the phospholipids. Hydration Dephosphurization is added to the crude oil of 1% -3% of warm water, the hydrophilic phospholipid swelling and sinking, then crude oil is heated to 85 ℃ -90 ℃, still 8-12 hours, with a centrifugal separation or filtration, the precipitate is removed.

           
(2) deacidifying the crude oil that is removed in the free fatty acids. Alkali refining method of alkaline deacidification is the use of free fatty acids in the oil from the neutralization reaction to form a salt and water. This salt is not soluble in the neutral oil, and the oil adsorption of other impurities can be separated by centrifugation or shake removed through concentration of the sodium hydroxide solution used is between 10% -15%. 
(3) bleaching the oil to remove color method is to heat the adsorption material to be treated is mixed with the oil, 0.6% to 1.3% active carbon, and then the oil temperature rose to 95 ℃, stirring for 15-20 minutes, separated by centrifugation or activated carbon was removed by filtration. 
(4) Deodorized to remove oil unpleasant odor, take high vacuum, high temperature coupled with direct methods such as steam stripping the oil in the basic odor substance removal.

Oil refining equipment for the processing requirements: clear and transparent, colorless, odorless, good thermal stability.