The hazards mainly include the following:

Indigestion

There are many highly toxic substances in gutter oil, arsenic is one of them. If eaten After a certain amount, headache, dizziness, fatigue, etc. will usually occur. More seriously, it will seriously affect the digestive tract and lead to digestive system disorders

Diarrhea

Generally, gutter oil comes from sewers. It is extracted from waste oil, and can also be obtained by refining rotten animal meat and rotten animal offal. This means that gutter oil is not hygienic at all. There are even tens of thousands of toxic microorganisms in the oil. If you eat this It’s strange that oil can prevent diarrhea

Abdominal pain

Gutter oil contains various detergents and chemical cleaning substances, so the lead content in gutter oil is surprisingly high. Those black-hearted workshops don’t know how to purify gutter oil. Instead, they will add many other chemicals. When lead enters the body, it will cause abdominal cramps and anemia. In severe cases, lead poisoning will damage liver function

Cancer< /p>

Based on the source of gutter oil, it generally comes from the sewage channels of hotels and restaurants. It contains aflatoxin and benzopyrene. Aflatoxin is more than 100 times more toxic than arsenic. It can easily lead to cancer of organs, such as intestinal cancer, stomach cancer, kidney cancer, liver cancer, breast cancer, ovarian cancer, etc.

Once "gutter oil" enters the market, consumers must learn to identify it through their senses. According to experience, edible oil can generally be identified by looking, smelling, tasting, listening, and asking questions.

At first glance

Look at the transparency. Pure vegetable oil is transparent. During the production process, due to the mixing of alkali, wax, impurities and other substances, the transparency will decrease; look at the color. Pure oil is colorless. During the production process, the pigment in the oil is dissolved in the oil, so the oil becomes colored. Looking at the sediment, its main component is impurities.

Two smells

Each oil has its own unique smell. You can put one or two drops of oil on your palms, rub your hands together, and smell the scent carefully when it feels hot. Oil with a peculiar smell indicates that there is a problem with the quality. The smelly oil is probably gutter oil; if it smells like mineral oil, you should not buy it.

Three tastes

Use chopsticks to take a drop of oil and taste it carefully. Oil with a sour taste is an unqualified product, oil with a burnt and bitter taste has gone rancid, and oil with a peculiar smell may be "gutter oil".

Four cans

Take one or two drops of oil at the bottom of the oil layer, apply it on a piece of flammable paper, light it and listen to the sound. A product that burns normally and makes no sound is a qualified product; a product that burns abnormally and makes a "squeaking" sound indicates that the moisture content exceeds the standard, and is an unqualified product; a "cracking" explosion sound is heard when burning, indicating that the water content of the oil seriously exceeds the standard, and may It is an adulterated product and must not be purchased.

Five questions

Ask the merchant about the purchasing channels, and if necessary, ask for purchasing invoices or check the sampling test report of the local food hygiene supervision department.

In addition, using the relationship between metal ion concentration and conductivity, the amount of metal ions in the oil can be determined by detecting the conductivity of the oil. Many experiments have shown that the conductivity of Kushui oil is 5 to 7 times that of first-grade edible oil, so Kushui oil can be accurately identified.