What is the purpose of expired cooking oil and does cooking oil expire?

1. Use it as hand oil or body oil.

If the ** on the hands or feet is dry, you can put your hands or feet in cooking oil to soak for a period of time, or you can wipe the **dry place with cooking oil. Some girls who love beauty can also soak their fingers in oil often, so that the nails will grow well, that is, transparent and strong.

2. It is used to raise flowers.

Expired cooking oil can be used as fertilizer, each time a small cup is poured into the pot, the flower absorbs the nutrients in the cooking oil, and can grow very healthy, such as Junzi orchid. But be careful not to water too much at once, and not too often.

Extended Information: Dangers of Eating Expired Oil:

1. Induce cardiovascular and cerebrovascular diseases.

When edible oil is oxidized rancid, unsaturated fatty acids, which are essential fatty acids, will be destroyed.

Long-term consumption of oxidized vegetable oils and fats will cause the human body to lack essential fatty acids, and when the essential fatty acids are insufficient, the blood low-density lipoprotein and low-density cholesterol will increase, which will easily produce arteriosclerosis and cause cardiovascular and cerebrovascular diseases.

2. Lead to Alzheimer's disease.

Oxidative rancidity of oils and fats, -3 series of unsaturated fatty acids are destroyed, which are important nutrients for the brain and cranial nerves, and the intake will be insufficient, which will affect memory and thinking ability, and for the elderly, Alzheimer's disease will be more likely to occur.

3. Accelerate the formation of age spots.

Hydroperoxide, the intermediate product of food oil rancidity, can be partially converted into peroxide free radicals under the action of a variety of metal ions in the human body, which directly catalyzes the production of melanin by tyrosine, which accumulates on the surface of the first and will accelerate the formation of age spots.

4. Risk of fatty liver and cancer.

Although the absorption rate of oxidized rancid oils is low, because we ingest them every day, they accumulate in the body, which has serious consequences - inactivating mitochondrial enzymes in the liver, denaturing proteins and finally leading to fatty liver.

In addition, oil peroxidation products can also be induced in the body.

DNA is destroyed, leading to tumors and even carcinogenic results.

How to turn expired cooking oil into treasure.

Expired oil can be used as lubricants, body oils, and nutritional fertilizers. When the resistance of the door lock, bearing, or zipper is high, it can be solved by applying expired oil. When the hands and feet are dry, they can be soaked in edible oil, which has a moisturizing effect.

Alternatively, expired oil can be poured directly into the potting soil to improve soil fertility.

Cooking oil expires. Cooking oil usually has a shelf life of 18 months, but it does not necessarily go bad even after 18 months. If the cooking oil is spoiled, it can be smelled by smelling, the shelf life is also uncertain, the shelf life will be different due to the different temperatures, oils and containers, if you buy the oil that can last for a long time, it is recommended not to use the original plastic drum.

Pour it into a glass bottle and it will double the shelf life and it doesn't matter if it's two years.

Introduction: In fact, the shelf life indicated on the outer packaging is the theoretical shelf life, that is, the shelf life of airtight storage under specific storage conditions. After consumers buy edible oil, once opened, some nutrients in the edible oil will be in close contact with the air, and a slow chemical reaction will occur, which will produce harmful substances to the human body, resulting in the edible oil within the shelf life can not fully guarantee health and safety.

The shelf life of cooking oil is usually 18 months, especially when opening a large vat of cooking oil, it is usually difficult to "keep fresh" within a month. Therefore, a large amount of storage is clearly not suitable. Therefore, it is necessary to pay attention to the shelf life of edible oil, and should not consume expired fats or edible oils that are cloudy, precipitated or have a "hala smell", and when choosing "low-priced" edible oils, it is also necessary to pay attention to the exact production time of the product.

Yes, cooking oil.

The shelf life is generally 18 months, the barrel of edible oil is difficult to keep fresh for 1 month after opening, edible oil must pay attention to the shelf life, for expired oil or turbid, precipitation or "hala flavor" edible oil should not be edible. Flaxseed oil is especially chosen.

It is also important to pay attention to the exact production time and shelf life of the product.

What Factors Affect the Shelf Life of Edible Oil:

The key to the shelf life of edible oil is the oxidative stability of oil, that is, the degree of oxidative rancidity of oil. Because the oxidative rancidity process of oil will produce low molecular weight carbonyl compounds aldehyde, ketones, acids and other components, these compounds have a special odor, which will not only affect the flavor and color of oil, reduce the quality of oil, but also produce harmful substances and affect health.

Factors such as light, heat, oxygen, water, and metal ions will affect the oxidative rancidity process of oil, and oxidative rancidity oil has an adverse impact on human health. Peroxide value and acid value.

The higher the degree, the higher the degree of oxidative rancidity of the oil, and when the peroxide value and acid value exceed the limit, it is no longer suitable for consumption. Therefore, preventing oxidative rancidity is the key to ensuring the quality and safety of edible oil.

Tips for choosing a good oil:

In life, there is an intuitive way to choose oil, and that is to look at the refractive power of the oil. It is to see whether the oil is transparent or not, the better the light transmittance, the better the quality of the oil.

According to this article alone, the home-squeezed peanut oil that has passed the test before.

was left out.

There is an experiment, the oil pan test method. Through the oil pan test method, we found that the same hot pan cold oil, the freshly squeezed vegetable oil is heated after the oil smoke goes straight out, and because the impurity content of the freshly squeezed vegetable oil is different, the concentration of the oil smoke is also different, and some impurities are more, in addition to the large oil smoke, there is also a choking taste.

Whether it's freshly squeezed rapeseed oil.

Or use the household oil press to squeeze the edible oil yourself, because there are many impurities, in the cooking process, it is easy to produce more harmful substances, which will be harmful to people's health, so it is not recommended for everyone to eat.

1: Freshly pressed rapeseed oil is directly sealed in plastic barrels.

2: In order to avoid the smell of raw oil, put the oil in a pot and heat it before saving.

Three: Barreled oil is placed on the side of the stove, not protected from light, cold and heat treatment.

Four: When stir-frying, heat the oil at high temperature.

In addition, after the barrel of oil is opened, it is best to pour it into the oil pot before use. The rest of the oil should be sealed and placed in a cupboard or blackened with newspaper. What if you still have bulk canola oil at home?

Don't worry, you can make the remaining oil into oil chili, because the amount of each use is very small, so the harm to the human body will not be so great, of course, this is also an expedient measure. Again, since it is a food, of course, it must have a shelf life, and if it is not stored properly, no matter what kind of oil, it will spoil. Therefore, we must not be greedy when buying edible oil, it is best to buy it on demand, the average family of three, 5L is enough to eat for one or two months.

The shelf life of edible oil is generally 18 months, especially after the opening of the barrel of edible oil, it is often difficult to "keep fresh" for 1 month, so it is obviously inappropriate to hoard a large amount, so edible oil must pay attention to the shelf life, for expired oil or turbid, precipitated or "hala" edible oil should not be eaten When choosing "big drop" edible oil, you must also pay attention to the exact production time of the product. Experts remind that edible oil, like other foods, has a shelf life, and eating expired edible oil will cause harm to the human body. From the outside, the high-quality oil has a moderate color and a light and soft taste, which is made through careful selection of materials and reasonable processing.

On the contrary, the dark color of the oil does not mean that the oil is concentrated, but because of the low degree of refining and many impurities.

Hello friends, let's talk about does cooking oil expire? Because many people think that edible oil will not deteriorate, especially plants, because it itself exists as a liquid, so it will not be moldy like lard, in fact, if vegetable oil is opened for a long time and not used up, it will also be harmful to the body. Because most people's thinking is that the advantage will not expire, so when buying oil, most of them will not look at the shelf life of the oil, in fact, the oil also has a shelf life, if the oil beyond the shelf life is still used, then there is an invisible harm to the body.

The nutritional value of expired oil is reduced, and the oil will be oxidized after opening and not used up for a long time because it has been stored for a long time. And it will lead to the destruction of the nutrients of the oil itself, and the oil will be eaten. Expired oil has the potential to poison people, because there is an oil that may be rancid if it exceeds the expiration date and can cause some chronic poisoning reactions in the body, such as diarrhea, vomiting, abdominal pain, etc.

Long-term use of expired oil will accelerate the aging of the human body, leading to increased blood lipids, atherosclerosis, and increasing the risk of the occurrence of tumors and cardiovascular diseases. It is best to use up the oil within the shelf life, and the opened oil is best eaten within three months, and the opened oil should be stored in a cool and dry place with a backlight and sealed. And the oil should be kept away from the stove, because the temperature is too high will also speed up the deterioration of the oil, so for food is a shelf life, for the sake of health, it is best to use the oil within the shelf life.

This is just my personal opinion, if satisfied!

The shelf life of edible oil is generally within one year, if it is exceeded, the internal composition will change, and the toxic aflatoxin will be produced, which is toxic to humans, and the taste is not good, and there is a halazi taste.

Cooking oil can deteriorate if left out for a long time.

Under normal living conditions, edible oil without added antioxidants will generally reach the critical point of deterioration after 2 months of opening. After a few days, the characteristic "hala smell" of rancidity will appear.

Of course, edible oil has an expiration date, and anything has an expiration date, it's just a matter of time.

Everything has a shelf life, and cooking oil is no exception.

Expired cooking oil is not recommended for consumption. Even if unopened, the quality and nutrient content of cooking oils gradually deteriorate over time and gradually lose their natural aroma, taste and color. If the edible oil expires, it may have a bad sense of smell, poor taste, reduced nutritional value or increased harmful substances, which will have a certain impact on human health.

Therefore, it is advisable to consume fresh cooking oil within the shelf life. If it is not stored properly or exposed to high temperatures, it may cause the cooking oil to deteriorate prematurely, and it is recommended not to consume it.

In addition, different types of cooking oils have different shelf lives. Some oils rich in unsaturated fatty acids (such as flaxseed oil, sesame oil, grapeseed oil, etc.) usually have a shorter shelf life, and it is recommended to consume them sooner; Some oils rich in saturated fatty acids (such as olive oil, coconut oil, etc.) can be stored for a longer period of time. When using edible oil, it should be reasonably stored and used according to the characteristics and shelf life of each oil.

Special attention should be paid to the fact that edible oil should be kept in a cool, dry, ventilated and dark place, and the residue should be placed in direct sunlight or in a high temperature environment. If there is expired or spoiled cooking oil, you should throw it away in time and do not use it again to protect your health.

Expired cooking oil may cause the following hazards to the human body:

1.Increase of harmful substances: Edible oil stored for a long time may produce free radicals, peroxides and other harmful substances, which may cause potential harm to human health.

2.Decline in nutritional value: The fatty acids in edible oil are easy to oxidize and decompose, losing their original nutrients, which is not conducive to human health.

3.Bacterial growth: After the edible oil expires, it is easy to breed various harmful microorganisms and bacteria, such as mold, E. coli, etc., which will bring potential harm to human health.

4.Susceptibility to disease: The chemical composition of expired oil has changed or decomposed, which may lead to increased burden on the liver and the formation of gallstones, especially the dialdehydes in fried foods.

In short, expired cooking oil will not only affect human health, but also affect the quality and taste of food. Therefore, the consumption of expired cooking oil should be resolutely avoided.

Not limbs. Expired cooking oil is harmful and should not be consumed.

Edible oil expiration refers to the process of edible oil storage, due to the pollution of moisture, microorganisms, fats and some harmful substances in the air, resulting in rancidity and deterioration of oils, decomposition and oxidation reactions.

Oil. Spoiled oils and fats produce some toxic substances, such as aflatoxin. Aflatoxin is a carcinogen, and long-term intake of aflatoxin can cause liver cancer, stomach cancer, esophageal cancer and other diseases.

Experiments have shown that under the same conditions, people who consume edible oil that has passed its expiration date have a 35% higher risk of liver cancer than those who eat newly purchased cooking oil. Therefore, expired cooking oil should not be consumed.

Expired cooking oil will contain a lot of harmful substances such as cholesterol and trans fatty acids, and excessive intake of trans fatty acids will have adverse effects on human health. The US FDA has issued an announcement saying that a substance called "polyunsaturated fatty acids" has been found to have a potential carcinogenic risk.

Therefore, long-term consumption of edible oil that has passed the shelf life is harmful to human health, and it is better not to eat expired edible oil for the sake of health.

When buying edible oil, it is necessary to choose formal channels, quality is guaranteed by historical difficulties, the ruler is not clear and complete, the national food safety standards and health standards are complete, the production date and shelf life are clearly identifiable, and the packaging is complete and undamaged.

In addition, everyone should also pay attention to the storage conditions to avoid exposing the edible oil to high temperatures.

Oil.