الفهرس 
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Abstract
Objective: Study stability of blend of soybean oil and sunflower oil and chemical properties through the use of by-products and waste fruit plants and grains such as mango peels and apple pomace and wheat bran as sources of phenolic compounds that act as natural antioxidants. Methods & Results:Were prepared extracts alcoholic from the mango peels and apple pomace and wheat bran were estimating their content of total phenolic compounds, as well as the efficiency of antioxidant activity and the separation and estimation of phenolic compounds using HPLC system and then a blend of action of the extract apple pomace and wheat bran was then study their effectiveness as antioxidants stability of the blend of soybean oil and sunflower oil, which has a heating Primary process by conducting chemical tests required during thermal treatment (heating process and the process of frying), in addition to measuring their impact on the stability of both two blends using the ransimat method as one of the ways to measure the stability of oils. The most important results obtained indicate the impact of heating on the chemical properties of the samples of oil blends, which showed that the best samples were treated with all of the mango peels focus extract 600 ppm, as well as treatment blend of extract dregs apples and wheat bran at the same concentration and also operations describes the frying process effect on the chemical and physical properties of selected samples from samples of oil blends as well as the results of the test method ransimat where pointed out that the best samples and the most stable samples treated extract peel mangoes at a concentration of 600 ppm, as well as treatment blend extract apple pomace and wheat bran at the same concentration.Conclusion:from the previous results it should be conclude that it could improve the chemical and physical properties of soybean oil by blending it with sunflower oil for thermal treatment as well as take advantage of some fruits and grains such as mango peels, apple pomace and wheat bran as a natural sources of antioxidants, which may represent a burden on the environment.