Evening primrose (Oenothera spp.) oil and seed

Abstract

Evening primrose (Oenothera spp.) seed contains ca. 15% protein, 24% oil, and 43% cellulose plus lignin. The protein is unusually rich in sulphur-containing amino acids and in tryptophan. The component fatty acids of the oil are 65–80% linoleic and 7–14% ofγ-linolenic, but noα-linolenic acid.

The 1.5–2% unsaponifiable matter has a composition very similar to that of cottonseed oil. The sterol fraction contains 90%β-sitosterol and the 4-methyl sterol fraction contains 48% citrostadienol;γ-tocopherol dominates its class, with someα- but no other tocopherols.

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Hudson, B.J.F. Evening primrose (Oenothera spp.) oil and seed. J Am Oil Chem Soc 61, 540–543 (1984). https://doi.org/10.1007/BF02677026

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Keywords

  • Nuclear Magnetic Resonance
  • Unsaponifiable Matter
  • Component Fatty Acid
  • Triterpene Alcohol
  • Methylene Cycloartanol