1, temperature: linseed oil is rich in linolenic acid. When the cooking temperature exceeds 45 degrees Celsius, the structure of linseed oil will be destroyed.

2. Storage away from light: When linolenic acid is exposed to light, its structure will also be destroyed, resulting in the loss or deterioration of its nutrients.

3. Linseed oil should be stored in a cool and dry place, avoiding direct sunlight and high temperature, and preventing oil from oxidation and deterioration. Open flaxseed oil should be eaten as soon as possible to ensure its freshness and nutritional value. When buying linseed oil, we should pay attention to the production date, shelf life and certification mark of the product, and give priority to the cold-pressed virgin linseed oil to ensure the integrity and safety of its nutritional components.