Skip to main content

Evening primrose (Oenothera spp.) oil and seed


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.

This is a preview of subscription content, access via your institution.


  1. Riley, J.P. J. Chem. Soc. 2728 (1949).

  2. Miller, R.W., F.R. Earle, and L.A. Wolff, Lipids 3:43 (1968).

    Article  CAS  Google Scholar 

  3. Bohannon, M.B. and R. Kleimann, Lipids 11:157 (1976).

    Article  CAS  Google Scholar 

  4. Hudson, B.J.F. and I.G. Karis, J. Sci. Food Agric. 25:759 (1974).

    Article  CAS  Google Scholar 

  5. Shaw, R. Biochim. Biophys. Acta 98:230 (1965).

    CAS  Google Scholar 

  6. Todd, D., O. Stone, O. Hechter, and A. Nussbaum, J. Biol Chem., 229:527 (1957).

    CAS  Google Scholar 

  7. Gibson, R.A. and G.M. Kneebone, Am. J. Clin. Nutr. 34:252 (1981).

    CAS  Google Scholar 

  8. Horrobin, D.F. (ed.), Clinical Uses of Essential Fatty Acids, Eden Press, Montreal and London (1982).

    Google Scholar 

  9. The Analysis of Agricultural Materials, Ministry of Agriculture, Fisheries and Food, Technical Bulletin RB 427, HMSO, London (1981)

  10. Agriculture Handbook 379, US Dept. of Agriculture (1969).

  11. Jeong, T.M., T. Itoh, T. Tamura, and T. Matsumoto, Lipids, 11:921 (1976).

    Google Scholar 

  12. Walker, A.F., Personal communication (unpublished).

  13. Itoh, T., T. Tamura, and T. Matsumoto, JAOCS 50:122 (1973).

    Article  CAS  Google Scholar 

  14. Kornfeldt, A. and L.B. Croon, Lipids 16:306 (1981).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations


About this article

Cite this article

Hudson, B.J.F. Evening primrose (Oenothera spp.) oil and seed. J Am Oil Chem Soc 61, 540–543 (1984).

Download citation

  • Received:

  • Issue Date:

  • DOI:


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