What is the shelf life of cooking oil, and how long is the shelf life of cooking oil

The shelf life of cooking oil is 18 months. But this is premised on the fact that the packaging is not opened. Edible vegetable oils are stored for a long time, and the fatty acids will undergo chemical changes and their nutritional value will decrease.

Therefore, it is important to buy oil according to the production date, the fresher the better. Once the edible vegetable oil is opened, its shelf life is reduced accordingly. As for the shelf life, it is not necessarily, because the temperature is different, the raw materials used in the oil are different, and the container is different, so the shelf life is not the same, if the oil bought will eat for a long time, it is recommended not to use the original plastic barrel, and then use glass bottles after buying, which will extend the shelf life, and there is no problem for two years.

Cooking oil. The shelf life is generally 18 months, especially after the barrel of edible oil is opened, it is often difficult to "keep fresh" for 1 month, so a large amount of hoarding is obviously inappropriate, therefore, edible oil must pay attention to the shelf life, for expired oil or turbid, precipitated or "hala" 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.

The shelf life of edible oil is generally **18 months**, but the shelf life of edible oil after opening is usually **3 months**.

Cooking oil. The shelf life is generally 18 months.

First, there are many people who mistakenly think that edible oil has no shelf life, in fact, this is a wrong idea, edible oil has a shelf life, and the shelf life will be shortened after opening, edible oil shelf life: the usual shelf life is 18 months, which is based on the premise that the package is not opened. The shelf life of edible oil will be shortened accordingly after opening, and it is best to consume it within 3 months.

Second, edible oil must pay attention to the shelf life before use, for the expired or precipitated edible oil, can not be eaten again, mainly expired edible oil will be harmful to human health, the usual diet should also be light and easy to digest.

3. In fact, there is also a special way to preserve edible oil, because edible oil is most afraid of four things, namely light, air, high temperature and water. Therefore, when you usually save it, you must remember these key points. Edible oil should be protected from light, sealed, low temperature and waterproof.

Screw the lid tightly after each use to reduce the contact time with the air.

There are many types of edible oil, but they mainly include two categories: animal fat and vegetable fat, lard.

Soybean oil, olive oil, peanut oil.

Sunflower oil, etc., is an indispensable edible oil in the daily diet.

Most people have the impression that edible oil has no expiration date at all, but they don't know that if it is too long, it will deteriorate, and if you continue to eat it, it will be very harmful to your health.

The shelf life of unopened edible oil is generally around 18 months, while the shelf life of edible oil after opening is usually around 3 months.

The shelf life of edible vegetable oil in barrels is generally 18 months, and the shelf life of olive oil in small glass bottles is generally 24 months. The shelf life after opening is about three months.

The expiration date of edible oil will have different expiration dates according to the different processing technology of edible oil, some of the edible oil in the processing process is a physical pressing method, some is a chemical pressing method, and certain additives will be added in the pressing process, and the additives will affect the storage of edible oil and the validity period of edible oil.

Preservation of edible oils:

Edible vegetable oil has "four fears": one is afraid of direct light, two is afraid of air, three is afraid of high temperature, and four is afraid of water. Therefore, the preservation of edible oil should be protected from light, sealed, low temperature and waterproof.

Screw the lid tightly after each use to reduce the contact time with the air. The easiest way is to make an oil bottle cover with thick cardboard (opaque) according to the size of the oil bottle, and buckle it to the top to solve the problem of avoiding light.

Try to buy small packages of oil, shorten the storage time, the fresher the oil, the better, the longer the storage time, the greater the risk of oxidation rancidity. If you have a large family, you can buy a 5-liter package, and it is more suitable for a family of three to buy a liter or smaller. Buy it when you run out, don't be afraid of trouble.

Edible oil, also known as "edible oil", refers to animal or vegetable oils and fats used in the preparation of food. It is liquid at room temperature. Due to the raw materials, processing technology and quality, the common edible oil is mostly vegetable oil, which is usually obtained by pressing or extracting the seeds of oil crops.

Edible oil generally has a shelf life of 18 months, but even if it reaches 18 months, it does not necessarily spoil. If the cooking oil is spoiled, you can smell it by smelling it. The shelf life is not certain, because of the different temperatures, the different raw materials used for the oil, and the different containers, so the shelf life will not be the same, if the oil you buy will eat for a long time, it is recommended not to use the original Shuo material barrel, pour it into a glass bottle after buying, it will double the shelf life, and it doesn't matter if you have two years.

In fact, the shelf life indicated on the outer packaging is the shelf life in the theoretical sense, that is, the shelf life of closed storage under specific storage conditions. After consumers buy edible oil home, once opened, some nutrients in the oil will be in "close contact" with the air, and a slow chemical reaction will occur, and then produce substances harmful to the human body, resulting in the edible oil within the "shelf life" is not completely "guaranteed".

Edible oil has a shelf life, which is generally 18 months. Generally speaking, edible oil that has been unpacked and left for more than three months may be contaminated by certain microorganisms and bacteria, reducing its nutritional value and even spoiling. Therefore, if the usual cooking oil has been opened, it is best to use it up within three months.

The nutritional value of expired oils is reduced. After opening and not eating the oil for a long time, because the storage time is relatively long, the oil will be peroxided, and this will lead to the destruction of the nutrition of the oil itself, and then eat these oils, there will be no nutrition of the oil.

Expired oil has the potential to poison people. Because if the oil exceeds its expiration date, it may be rancid, and the rancid oil can cause some chronic toxic reactions in the body, such as diarrhea, vomiting, abdominal pain, etc.

The opened oil should be stored in a cool, dry place, backlit and sealed. If there are fewer stir-fried dishes, then try to buy small bottles to reduce the time of opening and storage. Keep the oil away from the cooktop, as too high a temperature will also speed up the deterioration of the oil.

The shelf life of edible oil is 18 months. The shelf life of the last opened cooking oil is 18 months when stored in a good environment. After opening, the edible oil will come into contact with the air, and the fatty acids in the oil will change, and the nutritional value will become lower, so the shelf life is shorter than that of unopened edible oil, and it is recommended to consume it within 3 months.

Try to store cooking oil in a cool place away from light to avoid deterioration.

Tips for picking oil:1. Understand the characteristics of oil, nutritionists say that no oil is the best. You should learn about the properties and physical condition of each oil and choose the right cooking oil for you.

The human body can obtain nutrients such as fatty acids or other vitamins from edible oils. Among them, there should be more unsaturated fatty acids than saturated fatty acids. If you want to eat foods with saturated fatty acids, such as red meat, cakes, etc., it is recommended to choose vegetable cooking oils.

2. Choose according to cooking habits, choose the right edible oil according to personal living habits and preferred cooking methods. Each cooking oil has a different smoke point, which is the lowest temperature at which the oil starts to produce flue gases. As long as its smoke point is exceeded, it will release free radicals that are harmful to the human body.

Therefore, different cooking oils should be used for different cooking methods. For high-temperature frying, in addition to stable animal cooking oils, you can also choose vegetable cooking oils with a pumping point above 200 degrees Celsius, such as peanut oil and tea oil.

In general, peanut oil has a shelf life of 18 months, and unopened peanut oil can be stored for 2 years. Peanut oil that has been opened oxidizes quickly, and it is best to consume it in 4-9 months.

Peanut oil is a fatty oil extracted from the seeds of the leguminous peanut, which is a relatively easy edible oil to digest. Peanut oil contains more than 8% unsaturated fatty acids. It also contains saturated fatty acids such as palmitic acid, stearic acid and eicosanic acid.

Usually the shelf life of edible oil is 18 months, but this is only if the package is unopened. The fatty acids in edible oil will undergo chemical changes with longer storage time, and the nutritional value will also decrease.

Therefore, it is very important to buy oil to see the production date, the fresher the better, if you find that it has exceeded the expiration date, do not continue to use it, so as not to harm your health.