Why can't the crude oil squeezed out during oil pressing be eaten directly?

1. Why is self-extracting oil so popular? At present, self-extracting oil can be seen everywhere in China. The slogan of "no additives" and "pure natural" has attracted countless customers and the market is very large. There are many self-extracting oil merchants all over the country, especially in rural areas, and self-extracting oil is still very popular. There are also many shops and stores with the slogan of "self-extracting oil food, safer and more assured" to attract customers to eat in the store.

This series of hot air has also led many manufacturers to launch "home oil press" products, with a wide variety of products and high and low prices. The price is more than 400, and the price is close to 7000! Although the price is expensive, its monthly sales are actually considerable. The data shows that a store sells 860 yuan a month! The sales volume of a store is so amazing that you can imagine the purchase volume all over the country!

According to a shop where a seller uses an oil press, before the second season of China brand program "China on the Tip of the Tongue 2" was broadcast, the sales volume of the oil press was not so amazing, even the business was relatively deserted, but after the broadcast of this program, it attracted a large number of people to buy it. (In this episode of Heart Biography, an oil mill owner in Shexian County, Anhui Province uses traditional handicrafts to knock out rapeseed oil with a hammer of several hundred kilograms. )

Second, self-extracting oil has advantages and disadvantages. Many people think that self-squeezed oil is "pure natural" and "no added", which is safe to eat and full of flavor. The fried dishes are all delicious with the taste of raw materials, and the visible self-extracting oil is no longer afraid of "gutter oil".

Although self-extracting oil is so popular, people find that there are still many problems that are affecting human health. The acid value index, oxidation degree and other physical and chemical indexes of self-squeezed oil greatly exceed the national standards. Not only that, experts say that blended oil in supermarkets is nutritious, safe and qualified edible oil at present, but self-squeezed oil has the following four shortcomings.

1. No food safety inspection and quarantine. It is not safe to press oil with a domestic oil press. The problem of raw materials for oil pressing is invisible to the naked eye. Some raw materials are moldy and easy to breed aflatoxin. Aflatoxin B 1 is listed as one of the strongest carcinogens by WHO.

2. Crude oil is squeezed by household oil press. There are no "five-level" refining processes such as deacidification, deodorization and decoloration in this process, and there are many impurities, such as phospholipids, aflatoxins and pesticide residues. This also easily leads to too much oil smoke when cooking with self-squeezed oil, and the oil smoke also contains harmful substances.

3. Rapeseed oil has astringency and contains erucic acid; Cottonseed oil contains gossypol toxin, which is very harmful to human body.

4. Self-squeezed oil is not added with antioxidants, and it is easy to oxidize and deteriorate when it comes into contact with air. Although the self-squeezed oil is stored in the refrigerator, it is best not to store it for more than a week, otherwise it will easily deteriorate and produce harmful substances.

CCTV made a program "Self-extracting oil is unhealthy and inedible", and finally concluded that self-extracting oil is indeed prone to some health risks.

Third, how to eat self-squeezed oil to avoid injury? Strictly control the use of fresh raw materials in a dry and clean storage environment, and strictly select some moldy raw materials and soybeans with bean smell. Moldy raw materials contain aflatoxin, which is a carcinogen; The oil extracted from unprocessed beany soybeans is not delicious.

Don't squeeze too much at a time.

Self-squeezed oil contains more impurities. The more extrusion, the more impurities, and the faster deterioration. It is generally recommended to squeeze and eat now, and it is best not to squeeze oil for more than a week.

A storage place, a jar

Self-squeezed oil should be kept in the refrigerator, away from sunlight and high temperature, and it is best to use glass bottles and cans. Once the self-squeezed oil is spicy and discolored, it can't be eaten any more.

You can't use the same oil for a long time.

Eating the same oil for a long time will lead to nutritional imbalance. There are many brands of edible oil on the market, such as olive oil, rapeseed oil, peanut oil and corn.

After reading the whole article, I believe everyone has a new concept in their hearts. Although self-extracting oil is still hot in the market at present, we need to know its advantages and disadvantages. Although self-extracting oil is nutritious, it also has some hidden dangers. In order to be healthy, we should eat self-squeezed oil in moderation and pay attention to the method of eating. It is not recommended to eat it for a long time.