Linseed oil can be divided into hot pressing and cold pressing due to different production processes. In order to distinguish between cold pressing and hot pressing, merchants call cold pressing linseed oil and hot pressing linseed oil. But both cold pressing and hot pressing can be called linseed oil or linseed oil.

According to the national standard of linseed oil in China (GB/T 8235-2008), the main linolenic acid content of linseed oil is 39.0%~62.0%.

Advantages of cold pressing technology: almost all nutrients in flaxseed are retained, the taste is refreshing and not greasy, and unsaturated fatty acids are rich. Disadvantages of cold pressing process: the oil yield is really low and the cost is high.

Advantages of hot pressing process: flaxseed oil is rich in taste and mellow. Disadvantages of hot pressing technology: high-temperature frying will reduce the effective components in oil.

This is why the average price of cold pressed linseed oil is higher, while the average price of hot pressed linseed oil is lower.

Extended data:

Nutritional value:

The main component of linseed oil is unsaturated fatty acid, accounting for 85% ~ 90%, and oleic acid and linoleic acid account for 50% respectively. It is characterized by strong stability and easy storage, because linseed oil contains a natural antioxidant-linolenic acid.

Linseed oil also contains minerals such as protein, sesamin, vitamin E, lecithin, sucrose, calcium, phosphorus and iron. It is an edible oil with extremely rich nutrition.

References:

Baidu encyclopedia-sesame oil

Baidu encyclopedia-linseed oil