How long is the shelf life of rapeseed oil and what are the precautions?
1. Oil has a certain shelf life, so don't eat oil that has been left for too long.
2, because there are some "green flavors", it is not suitable for direct use in cold dishes.
3. The oil heated at high temperature should be avoided to be reused.
4. The shelf life is 18 months in a dry and cool place below 25℃. Eating expired vegetable oil will cause serious harm to human body.
How to store rapeseed oil?
One is low temperature. At high temperature, the chemical reaction and enzymatic reaction of oil are obviously intensified, and the oxidation reaction is also accelerated, which is easy to lead to rancidity. So when you don't use oil, stay away from the stove and the sun and put it in a cool place.
The second is hypoxia. The thicker the oxygen, the larger the contact surface and the longer the contact time, which will accelerate the oxidation of oil and lead to rancidity. Therefore, the oil drum cover should be covered in time after each oil use.
The third is to avoid light. Under illumination, it can activate oxygen and photosensitive substances in oil and accelerate oxidative rancidity. Under the action of ultraviolet rays, ozone compounds will also be formed, resulting in unpleasant smells and tastes. So don't put oil in white transparent glass bottles. Plastic oil drums have certain transparency, so oil drums should also be protected from light. In addition, long-term oil containers should be cleaned and drained regularly before use, because the mixing of water will also accelerate hydrolysis and oxidative rancidity.
What is the nutritional value of rapeseed oil?
The oleic acid content of unsaturated fatty acids in high-quality rapeseed oil is second only to olive oil, and the average content is about 6 1. In addition, the contents of oleic acid and linoleic acid beneficial to human body in rapeseed oil rank first among all kinds of vegetable oils. Experts believe that there are many misunderstandings in edible oil consumption of urban and rural residents due to the strong recommendation of foreign grain merchants. Therefore, people should know more about the nutritional characteristics of rapeseed oil and actively advocate edible rapeseed oil.
The shelf life of rapeseed oil is 18 months, but in order to preserve rapeseed oil for a long time, it is necessary to ensure low temperature, lack of oxygen and avoid light, which is helpful for the storage of rapeseed oil. Of course, the rapeseed oil after opening should be eaten as soon as possible to avoid deterioration and waste.