Is the fried oil still edible?

No, it's unhealthy. According to the inspectors of relevant departments, after cooking oil is heated repeatedly, it will accelerate the oxidation process and produce many harmful substances. In fact, this kind of repeatedly fried food or oil after adding new oil to the repeatedly used oil is also a kind of gutter oil in a broad sense, which is extremely harmful. After repeated use and high temperature heating, a series of chemical reactions will occur in frying oil, such as increasing viscosity, foaming, deepening color, worsening flavor and increasing oil smoke. This reduces the quality of the oil. Moreover, repeated use of oil at high temperature may cause cancer. It is believed that many human diseases, such as tumors and arteriosclerosis, are related to oil oxidation, especially "Guo Hui Oil" contains a lot of trans fatty acids, which can lead to obesity, diabetes, cardiovascular and cerebrovascular diseases and other diseases if eaten for a long time. Cooking oil fume produced by heating contains carcinogens such as benzopyrene, which will lead to lung cancer if inhaled for a long time. Experts say that oil will react chemically under the action of high temperature for a long time, producing toxic components. Among them, some deteriorated oils have carcinogenic effects, and their harmfulness is comparable to that of "gutter oil". Baoding, China, May 14 (Lv Zihao, Zhang Jihang) After graduation, a "fried dough sticks brother" in Baoding, Hebei Province opened a breakfast stall. He brought his own "oil test spoon" and sold "conscience fried dough sticks". His unique business philosophy of "not selling fried dough sticks, but living" has won the trust and concern of many citizens. At 7 o'clock on June 4, 65438, in front of the breakfast window of "Liu's Tofu Brain" in Yinxing Road, Baoding City, people who bought fried dough sticks had already queued up, and the eight fast-food tables on the side were also full of people. On the blue signboard in front of the booth, the slogans of "Don't do to others what you don't want them to do to you" and "Use oil safely and never bomb again" are very eye-catching. "Fried dough sticks brother" Liu Hong Ann and his family are busy in the operating room, wearing uniform sanitary caps, aprons and masks.