Eleostearic acid

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Template:Chembox E number
α-Eleostearic acid
IUPAC name (9E,11E,13Z)-octadeca-9,11,13-trienoic acid
3D model (JSmol)
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Molar mass 278.43 g/mol
Melting point
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Eleostearic acid, (ELA) sometimes called α-eleostearic acid, is a conjugated linolenic acid (CLnA). It makes up approximately 80% of the fatty acids in tung oil and 60% of bitter gourd oil. Its high degree of unsaturation gives tung oil its properties as a drying oil. In rats, it is converted to a conjugated linoleic acid (CLA).[2] In their pioneering work on essential fatty acids, Burr, Burr and Miller compared the nutritional properties of ELA to that of its isomer alpha-linolenic acid (ALA). ALA relieved essential fatty acid deficiency; ELA did not.[1]

The closely related isomer β-eleostearic acid is (9E,11E,13E)-octadeca-9,11,13-trienoic acid.


α-Eleostearic acid makes up about 60% of the fatty acids from bitter gourd oil.
  1. 1.0 1.1 Burr, G.O.; Burr, M.M.; Miller, E. (1932). "On the nature and role of the fatty acids essential in nutrition" (PDF). J. Biol. Chem. 97 (1): 1–9. Retrieved 2007-01-17.
  2. Tsuzuki T, Kawakami Y, Abe R; et al. (2006). "Conjugated linolenic acid is slowly absorbed in rat intestine, but quickly converted to conjugated linoleic acid". J Nutr. 136 (8): 2153-9. PMID 16857834. Retrieved 2007-01-17. Unknown parameter |month= ignored (help)