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Huatai News

Do You Really Know How Long Does Cooking Oil Last Once Opened?

2019-02-21

Do you really know how long does cooking oil last once opened? There are many factors affecting the shelf life of edible oils, the most important of which are the type of oil and the storage environment. The more polyunsaturated fatty acids in edible oils, the more susceptible they are to oxidation. Commonly used five kinds of edible oils, the degree of difficulty in metamorphism, from easy to difficult: sunflower oil, soybean oil, corn oil, rapeseed oil, peanut oil. After the edible oil is opened, it is easy to accelerate the deterioration process under the action of light, heat, oxygen, water, microorganisms, metal ions and high temperature.

For convenience, many people put oil drums by the kitchen range after cooking, which is wrong. High temperature environment will greatly accelerate the speed of oil oxidation. It was found that under normal living conditions, edible oils without antioxidants generally reach the critical point of deterioration after 2 months of opening. In a few days, there will be a special "hala taste" of oily rancidity. Edible oils with antioxidants can be stored longer after opening the lid, but there is no research conclusion on how long it will last. Generally speaking, it is recommended that you finish the opened cooking oil within three months. It should be noted that most of the edible oils on the market are now supplemented with antioxidants, commonly used are "TBHQ" and "dibutyl hydroxytoluene" (BHT). If you find that the oil has gone bad, do not continue to eat. Oleic rancidity can produce peroxides and free radicals harmful to human body, accelerate human aging, and increase the risk of tumors, cardiovascular diseases and other diseases.

But for how long, there is no conclusion. Reducing the number of opening the cover, make the oil away from the high temperature environment, all of that are smart way to keep it longer. It's important to choose the healthy oil, Henan Huatai Cereals And Oils Machinery Co., Ltd knows what the customers want, developed projects including large scale oilseed pretreatment and pressing, oil extraction, oil refining and oil fractionation production line, etc. You will get more advantages in business competitions, if you choose us.