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Contact SupplierEvening primrose (Oenothera L.) is a plant belonging to the family Onagraceae, in which the most numerous species is Oenothera biennis. Some plants belonging to the genus Oenothera L. are characterized by biological activity. Therefore, studies were conducted to determine the dependence of biological activity on the chemical composition of various parts of the evening primrose, mainly leaves, stems, and seeds. Common components of all parts of the Oenothera biennis plants are fatty acids, phenolic acids, and flavonoids. In contrast, primrose seeds also contain proteins, carbohydrates, minerals, and vitamins. Therefore, it is believed that the most interesting sources of biologically active compounds are the seeds and, above all, evening primrose seed oil.
Onagraceae, evening primrose family of flowering plants, belonging to the myrtle order (Myrtales), comprising 18 genera and 655 species, and concentrated in the temperate region of the New World. The family is characterized by flowers with parts mostly on the plan of four (four sepals, four petals, four or eight stamens), but there are some exceptions. The ovary is inferior (i.e., below the flower proper). In the temperate zone the family is known from genera such as Epilobium, including the great willow herb, or fireweed (E. angustifolium). Another well-known genus is Oenothera (with about 80 species), which has been of great importance in studies in genetics and evolution.