Why are oil pressed foods unhealthy? What s so bad about oil extraction

Fried foods contain carcinogens.

Carcinogens are produced during the frying process, and many vitamins and other nutrients are destroyed.

Because the oil pressed by itself has not been processed in the first place, there are many impurities in it, which contain substances that cause cancer, and the oil that has not been refined will also produce carcinogens after high temperature, and the oil extraction equipment has not been cleaned for many years, there are many residues in it, and the oil produced is not clean.

Because of the limited conditions of self-pressed oil, it is impossible to effectively control the content of aflatoxin B1, which is very toxic and only needs a little bit to induce lesions in human cancer cells.

Self-squeezed oil has more impurities, low oil yield, poor sanitary conditions, and no food safety inspection, often the aflatoxin B1 in the oil will exceed the standard, and many people do not realize that long-term consumption of this oil is dangerous.

I think that if the operation method is correct, there is no problem with self-squeezing oil, you can eat it yourself, our family often buys dozens of catties of fat pork and then squeezes the lard by yourself, and the lard made is fragrant and healthy.

Self-pressed oil may have problems with poor hygiene and excessive bacterial colonies, because the environment of self-pressed oil is not necessarily completely hygienic, so there are hygiene problems.

Hygiene issues. The self-pressed oil has not undergone food safety testing, and the oil is not guaranteed. Although I know what the situation is, and there will be no fishing in troubled waters, there is no testing, and there may still be other safety problems.

1. It is unsafe for farmers to eat their own oil.

2. Self-pressed oil is a primary oil that has not been refined and processed, also known as crude oil, which contains many impurities, is easy to oxidize and deteriorate, and is not suitable for long-term storage. Crude oil should be refined, impurities removed, decolorized, and deodorized before it can be sold, and the refined oil has better stability.

3. Although self-pressed oil is not safer than barreled oil, it still has merits in terms of nutritional value. During the processing of edible oil, vitamin E and phytosterols are easily removed with refining, and self-pressed oil will retain more because it has not been refined. But for food, nutrition should be considered under the premise of safety, and the nutrients lost in refining can be obtained from other foods.

Everyone knows that vegetable oil is more beneficial to health than animal oil, but nutrition experts have raised a problem that people often ignore: the key to determining the safety and quality of edible oil lies in one of them: whether it is genetically modified food; Second: what kind of production and processing technology is used.

Genetically modified foods are forbidden to be eaten in Europe, the United States and Japan, and their reproduction of human offspring has yet to be tested by time and is still in unknown territory.

There are two types of edible oil production and processing technology: physical pressing method and chemical leaching method.

Of course, in addition to olive oil and rapeseed oil, some edible oils such as peanut oil need to be treated at high temperature to improve the fluidity of the oil, and then improve the oil yield. But once the raw material is baked, toxic substances are produced. Therefore, low-temperature cold pressing is the first element to ensure food safety.

The chemical leaching method is due to the fact that there is always oil left in the oil cake by the physical pressing method, just like the juice pressed at home, and the juice yield is extremely low. A solvent that "dissolves" the vegetable oil is then used to separate the oil from the raw material. At present, the commonly used solvent is "No. 6 light gasoline".

First, different processing technologies determine different nutritional values and costs.

The physical pressing method can keep the original flavor of edible oil, rich in natural vitamin E, so it has a long shelf life, and does not contain any additives, does not contain any solvents, whether it is for human health or in the food safety coefficient has the highest guarantee, is a real green food. However, the disadvantage is that the oil yield is very low, only 30%-40%, which is bound to be high cost and expensive price.

The edible oil yield of the chemical leaching method is high and the cost is low, but in the production process, it must go through multiple chemical treatments such as high-temperature degumming, caustic soda (sodium hydroxide) deacidification, clay decolorization, deodorization and dewaxing before it can be eaten by humans. If the treatment is not complete, there will also be solvent residues. Jinhao tea oil carcinogens exceeding the standard by 6 times is a good case.

Second, the requirements for the raw materials for processing are different.

Because the physical pressing of edible oil retains the original flavor, the requirements for raw materials are very high, and the raw materials require absolute freshness, low acid value and peroxide value, so the food safety standards are high, and the first will be relatively high. Just like when cooking at home, the steamed fish must be the freshest; But the resulting high costs must also be borne by consumers.

At present, with the listing of household oil presses, brand peanut oil manufacturers have realized the pressure of survival, and they have spent huge sums of money on the first to talk nonsense, deceive consumers, and say that the oil they squeeze is "crude oil", "there are potential safety hazards", "Aspergillus flavus is cautious and exceeds the standard" and so on. How can the peanuts you choose yourself, those that are not moldy, those that have sprouts, and those that have not changed color be unsafe. I've never seen people who eat raw peanuts or raw melon seeds.

I have only heard of the addition of palm oil to the bottled oil of the virtual brand (such as "a certain flower", "a certain large", "a certain Arowana", etc.), and it is more than 80%. Or that the brand edible oil we bought added a little peanut oil, and there was a little bit of "5S pressing". Then there is the addition of a large number of preservatives, otherwise how can there be 18 months (and even some are more than 3 years) shelf life, it is worth affirming that preservatives are not good for people.

Besides, physical oil pressing is the same as that of the original juicer, and the machine itself will not produce toxic and harmful substances. Household oil presses are also easy to clean, and there are no bacteria or viruses. Conversely, how do you clean a large industrial oil press?

Dismantling and washing? No, no bacteria? No virus?

It's impossible. Consumers must have a scale in their hearts, and they must be able to distinguish right from wrong, otherwise they will be easily deceived.

Of course, freshly squeezed oil does not add any preservatives and any other ingredients, so the shelf life is very short, it is best to eat it within 30 days, and it is best to keep it in the refrigerator.

If you want to open a fresh oil mill, you only need a small oil press, one room, and one person is enough. Of course, doing business requires conscience to win the trust of consumers, and it is necessary to ensure that every peanut is carefully selected to ensure that the fried oil is free of toxins.

Finally, I wish you a prosperous business and a prosperous financial resource!

Of course, it is good, healthy and hygienic, the quality is clear, and there is a bleaching process after squeezing, and the oil is processed at high temperature, so it can be used with confidence.

Of course, it can be eaten directly. But it is not purified, so there is a heavy oil smoke when stir-frying, and there is no salad oil. That's it.

Of course, as long as the quality and hygiene of the equipment can be guaranteed, the absolute quality of the fried oil is fine.

At present, a lot of brand-name oil on the market is not safe, the market of freshly squeezed oil is very large, and now the oil squeezed out does not add any preservatives, oak or is very enviable, only a small oil extraction equipment, in addition to a filter screen, if you want to clear a little, it will precipitate for a period of time.

Gutter oil incidents are frequent, and self-extracted oil is gradually emerging. Merchants also took the opportunity to launch "household oil presses", claiming to squeeze and eat freshly to obtain healthy and delicious edible oil. Is it really healthier this way? No! Home-pressed oil is not suitable for consumption.

Self-pressed oil is "**".

The oil that is pressed out of this is called "crude oil", commonly known as "original chali oil". China's standards stipulate that unrefined plants cannot be eaten directly, and can only be used as raw materials for refined oil.

There may be a safety hazard.

Too many impurities and unhealthy.

**It contains a variety of impurities, and may also contain arsenic, mercury, pesticide residues, etc. caused by environmental pollution, which will affect human health.

Some** also contain some natural harmful substances, such as gossypol in cottonseed oil, which can damage the liver, kidney, heart and other important organs and central nervous system of the human body, affecting the reproductive system; The glucosinolates in rapeseed oil have certain toxicity after hydrolysis and affect thyroid function.

There are too many impurities, and it is not easy to store.

The more impurities there are in the oil, the harder it is to store and the easier it is to spoil. Unsaturated fatty acids, vitamins A, D, E, K, etc. Spoiled oil is also destroyed by oxidation. At the same time, the oxidation products of oil are also harmful to health.

How do you turn it into cooking oil?

Due to the potential safety hazards, the state stipulates that edible oil must be "refined". The refining process generally includes sedimentation, de-colorization, deacidification, dewaxing, de-shaping, deodorization and other steps. Refining is not about removing all impurities, but about removing harmful impurities and retaining beneficial "impurities" such as vitamin E, carotene, etc.