月见草(Denothera Biennis L·)为柳叶菜科多年生草本植物,在我国长白山区有广泛的资源。1949年Riley发现月见草油中含有丰富的γ—亚麻酸。γ—亚麻酸作为二高—γ—亚麻酸的原料经生化酶反应变成PGE_1。少量的γ—亚麻酸即产生显著的抗血栓,抗炎及抗癌等生理活性。月见草油中主要含有棕榈酸、硬脂酸、油酸、亚油酸、γ—亚麻酸等成分。其中γ—亚麻酸的含量一般不超过10％,且油中所含的硬脂酸、棕榈酸等饱和成分能加强凝血 Evening Primrose (Denothera Biennis L.) is a perennial herb of the Salicaceae family and has extensive resources in Changbai Mountain area of ​​China. In 1949 Riley discovered that evening primrose oil was rich in gamma-linolenic acid. As a raw material of dihomo-γ-linolenic acid, γ-linolenic acid is converted into PGE_1 by a biochemical enzyme reaction. A small amount of γ-linolenic acid produces significant anti-thrombotic, anti-inflammatory and anti-cancer physiological activities. Evening primrose oil contains palmitic acid, stearic acid, oleic acid, linoleic acid, and gamma-linolenic acid. Among them, the content of γ-linolenic acid is generally not more than 10%, and saturated components such as stearic acid and palmitic acid contained in the oil can strengthen coagulation.