Little knowledge about cooking oil

For ordinary families, the oil they squeeze is very small, and they are usually purchased in supermarkets. The oil in the supermarket is also certified according to national standards and meets the requirements. But for our human body, it is best to use different oils alternately. This will not only ensure a balanced nutritional intake, but also taste different flavors. It is simple and easy to operate to squeeze the oil of different ingredients through the oil press, and the squeezed oil is also very fragrant.

If edible oil is stored for too long under inappropriate conditions, it will cause sourness and deterioration. This is mainly because the unsaturated fatty acids in fats and oils are oxidized, and the oxides are decomposed into short chains of aldehydes, ketones and acids. The substance has a pungent smell, which is a sour smell from oils and fats. The smelly oil tastes bad and has very low nutritional value, and eating too much can cause poisoning. Rancidity of edible oil produces over-refined lipids, which can cause hemolysis, damage the blood circulatory system, and accelerate human aging.

Therefore, edible oil should not be stored for too long, usually not more than 5 months. But also pay attention to prevent the deterioration of grease when storing. Do not store in metal containers. Because the results show that: manganese, nickel, iron, aluminum, etc. all have the effect of accelerating oil oxidation and rancidity. But there are also plastic bottles made of some materials that are very suitable for edible oil, and they are durable and light. They are Coca-Cola and Pepsi.

For edible oil, some people may think that it is unnecessary to squeeze it by themselves. Why not buy it directly? What I want to say is that no matter what kind of food it is, you will feel very clean when you make it yourself, and you will feel at ease when you eat it. You can buy the ingredients yourself to extract, and you can eat any oil you want. Don't worry about the restriction of ingredients.