sunflower seed oil is better. Corn oil and sunflower seed oil are high linoleic acid vegetable oils. Soybean oil, corn oil and sunflower seed oil are all rich in vitamin E. In addition, soybean oil contains lecithin, corn oil contains antioxidant ferulic acid ester, and sunflower seed oil contains phytosterols and phospholipids, all of which have health care functions. In contrast, pressed sunflower seed oil is more recommended because it contains more antioxidant components than other oils. This kind of vegetable oil is afraid of heat, so it is suitable for stewing dishes and daily cooking, but it is very inappropriate to control the temperature and not let the oil pan smoke. It is necessary to heat the pan to cool the oil and use it for frying. Precautions for consumers to buy edible oil: 1. Look at the color. Generally, high-grade oil is light in color, and low-grade oil is dark in color (except sesame oil). The color depth of oil is slightly different because of its different varieties. High-grade oil has good transparency and no turbidity. In addition, high-grade oil has no precipitation and suspended matter, and its viscosity is small. 2. Look at transparency. High transparency, less moisture impurities, excellent texture. After standing for 24 hours, high-quality vegetable oil should be clear and transparent, without turbidity, precipitation and suspended matter. 3. Taste it. Normal edible oil has no pungent smell. If it has pungent smell, it may be that chemical oil is added or the oil is not refined cleanly, and the residual solvent is high. 4. Look at the time. Oil stored for a long time or in poor storage conditions is prone to rancidity, so consumers had better buy products produced recently.