What is the easy way to distinguish gutter oil

You can distinguish it by tasting, listening, and asking. Take a look. Looking at the transparency, the pure vegetable oil is transparent, and the transparency will decrease due to the mixing of alkali lipids, waxes, impurities and other substances in the production process; Look at the color, the pure oil is colorless, in the production process because the pigment in the oil is dissolved in the oil, the oil will be colored; Looking at the precipitate, its main component is impurities.

Second sniff. Each oil has its own unique smell. You can put a drop or two of oil on the palm of your hand, rub your hands together, and smell it carefully when it is hot.

If there is a peculiar smell of oil, it means that there is a problem with the quality, and the smell is likely to be gutter oil; If there is a smell of mineral oil, you can't buy it. Three tastes. Take a drop of oil with chopsticks and taste it carefully.

Oil with a sour taste is an unqualified product, oil with a burnt bitter taste has become rancid, and oil with a peculiar smell may be "gutter oil". Four listening: Take a drop or two of oil from the bottom of the oil layer, apply it to a flammable piece of paper, light it and listen to its sound.

Qualified products are those that burn normally and silently; If the combustion is abnormal and makes a "squeak" sound, the moisture exceeds the standard, and it is an unqualified product; When burning, it makes a "crackling"** sound, indicating that the moisture content of the oil is seriously exceeded, and it may be an adulterated product, and it should never be purchased. Five questions: ask the merchant's purchase channel, and ask for the purchase invoice or check the sampling test report of the local food safety supervision department if necessary.

If it's unrefined gutter oil, it smells sour. You can burn it with paper dipped in oil, and you will hear a crackling sound, because there is water in the oil. You can put it in a pot and boil it.

Gutter oil burns out a lot of water. However, the gutter oil on the market is generally refined. It's not easy to tell.

Worried about buying gutter oil? Teach you the skills to quickly distinguish gutter oil, and learn it quickly if you need it.

Generally, by looking, smelling, tasting, listening, and asking, it is not gutter oil. Gutter oil is dark in color, turbid in oil, sediment, foul, odorous, choking, and odorous in taste. Gutter oil refers to all kinds of inferior oil in life, and the largest is the grease trap of the sewer of large hotels in the city.

If the oil burns normally and makes a "squeak" or "crackle" sound, it is Diliqiaogou oil and cannot be eaten.

Gutter oil is a kind of non-edible oil of very poor quality and unhygienic, which is strictly forbidden to be used in the field of edible oil, which will affect human health.

Gutter oil can be used to produce biodiesel (biofuel), prepare beneficiation agents, produce ethanol and biogas, turn into aviation oil, drilling lubricants.

Waste oil identification method:

1. Look at the color, the normal oil is colorless, transparent, and no precipitation, and the color is yellow and precipitated. Smell the smell, take a drop of oil and put it in the palm of your hand, rub your hands together, and the oil with a peculiar smell when you are hot is gutter oil.

2. Look at the crystals, put the oil in the refrigerated area of the refrigerator for 2 to 4 hours, and the solidification crystals that appear when taken out are gutter oil. Look at the flowability, pour some oil on the glass, if the flow is very slow, it is gutter oil.

3. Looking at the results of Tanlu after high fire, the oil color changes after high fire, and the color becomes thicker and darker, indicating that Rang Shen Belt is gutter oil.

"Gutter oil" is a non-edible oil of extremely poor quality and unhygienic. Once "gutter oil" is consumed, it can destroy people's white blood cells and the mucous membrane of the digestive tract, causing food poisoning and even serious consequences of cancer. Therefore, "gutter oil" is strictly forbidden to be used in the field of edible oil.

However, there are also some people who privately produce and process "gutter oil" and sell it as edible oil to some small restaurants at low prices, which brings great harm to people's body and mind. Therefore, the name "gutter oil" has become synonymous with all kinds of low-quality oils that bring physical harm to people's lives.

There is a trick to identifying gutter oil, and it would be a pity not to know.

Genetically modified foods seriously harm organs.

There is a trick to identifying gutter oil, and it would be a pity not to know.

Look at the color, look at the transparency. The color is gray and cloudy, drop a few drops of oil in your hands, and the pungent smell is gutter oil.

Just one garlic clove is all it takes to tell if the oil is good or bad right away! First, pour a little cooking oil into the bowl.

Then prepare a garlic clove. Distinguish whether the ditch oil is buried in the ground and rely on it.

Slice the garlic cloves with a knife. The thinner, the better, try to cut it as thin as possible. Slice into a bowl of oil and let stand for 2 hours.

If it's gutter oil, the garlic slices will turn red. Because gutter oil contains aflatoxin, garlic slices will turn red when they encounter aflatoxin. If it weren't for gutter oil, the garlic slices wouldn't turn color.

Look, the color of my oil has not changed after 2 hours, which means that my family's branch ant oil is a good oil, not imitation gutter oil.

1. It can usually be distinguished by looking, smelling or asking. When you look at it, you should look at its transparency, pure vegetable oil is usually transparent, if it is gutter oil, because the gutter oil is mixed with other substances with impurities in the production, its transparency will decrease, and there will be impurities.

2. When smelling, you can first drop one or two drops of oil in the palm of your hand, and then rub your hands until you are hot and smell the smell.

3. You can identify by asking the merchant. Once gutter oil enters the market, consumers should learn how to distinguish gutter oil when buying edible oil.

Because there are no "gutter oil" incidents abroad, there is currently no standard. Domestic experts are actively engaged in this project, because if it is done well, it will be the international leader, and other countries will take the lead without China. Think about dividing the gutter oil into grades and making a food-grade gutter oil, haha.