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Can the oil of fried food be eaten? It is not recommended to eat the oil with obvious deterioration

Can the oil of fried food be eaten? The experiment proves that the oil is obviously deteriorated. In real life, in fact, many people often eat this kind of oil. In fact, the oil of repeatedly fried food is not only not nutritious but also harmful to health, so try to avoid eating less. Is it a pity to pour out the oil every time you fry something?

Readers' doubts

Do you dare to eat the oil that is used repeatedly?

Mrs. Wang, the housewife, is usually very concerned about food safety. She called and said that she hopes the curiosity column can do a test of cooking oil.

'I saw a fried dough sticks stand near my home. They fry for a long time every day. I have observed that they usually fry for a period of time, and they will add some new oil to the oil pan, and continue to fry. It usually takes four or five hours to fry. Is this kind of oil safe? Sometimes I will buy some fried dough sticks for my family, but when I eat them, I feel very nervous. I always worry about eating such fried dough sticks, Damage to health. 'said Ms. Wang.

In addition, Ms. Wang also wants to know that sometimes she cooks at home and doesn't use up the oil after heating it. Can such oil continue to be eaten?

Life advice

It's better to eat different kinds of oil

So, how can we eat edible oil safely? What should we pay attention to in our daily life? Li Ming also gives some suggestions.

When choosing edible vegetable oil, you should master the following two points. First, color. All kinds of edible vegetable oil have their own color. After refining, the color will be lighter, but it is impossible and unnecessary to refine to a little color. Second, transparency, to choose clear, transparent vegetable oil.

The intake of cooking oil per person per day should not exceed 25-30g. Cooking can be controlled by oil control pot. It's better to eat different kinds of oil instead, because the difference of fatty acids between different kinds of oil may be large, and different fatty acids play different roles, so balanced intake is needed.

The best way to use more low-temperature cooking, and avoid the same pot of oil repeatedly heated. If the oil temperature is too high when cooking, not only the chemical structure of the oil itself will change, but also the digestion and absorption of the human body will be affected; the fat soluble vitamins A, e and D in the oil will also be destroyed, leading to the reduction of the nutritional value. It is suggested that the cooking method of family should be steaming, boiling, stewing or blanching to reduce frying as much as possible.

To store edible oil, it is necessary to keep away from oxygen, light, high temperature, metal ions, water and other factors that promote oil oxidation, so it is necessary to grasp four principles, namely, sealing, avoiding light, low temperature and water. If you buy a big barrel of oil, you can pour it into the oil control pot according to the consumption of a week, and then seal the big barrel of oil with tape, and put it in a cool and dark place. It is better to finish within 3 months after opening the seal; if you choose a small bottle for repacking, you should first choose a clean brown glass bottle, and pay attention to the bottle should be dry and waterless; when storing, you should avoid direct sunlight, and also keep away from hot areas such as the hearth. Do not mix the old and new oil, or it will accelerate the oxidation of the oil. The small oil bottle should be cleaned regularly. The oil bottle containing vegetable oil is put into the refrigerator directly after use, which is not only dark but also cold. It is a good method to store edible vegetable oil.

If the edible vegetable oil is placed for a long time, one or two drops of the oil can be placed in the palm of the hand before eating. After the hands are rubbed and heated, it can be eaten only if there is no peculiar smell (harrass or pungent smell) on the nose. If there is any peculiar smell, it can not be eaten.

Is the heated oil and the oil of repeatedly fried food safe to eat? The reporter of Huashang daily and Shaanxi zhongshi'an third party Supervision Co., Ltd. found through experiments that the repeatedly fried cooking oil was obviously deteriorated, and the repeatedly fried food oil was not only nutritious but also harmful to health. Expert: when choosing edible vegetable oil, you should master the following two points. One is color. All kinds of edible vegetable oil have their own color. Second, transparency, we should choose clear and transparent vegetable oil. The best way to use more low-temperature cooking, and avoid the same pot of oil repeatedly heated.