Obtained by hydraulic expression or solvent extraction of wheat germ which constitutes ≈2% of a wheat grain, the seed of Triticum aestivum L. (T. sativum Lam., T. vulgare Vill.), Gramineae. Constit. (of the oil): Linoleic acid 44.1%, oleic acid 30.0%, satd acids 15.1%, linolenic acid 10.8%, unsaponifiable matter 4.7%. The unsaponifiable matter contains vitamin E-active tocopherols (reported as 0.5% of the oil and as 2 international vitamin E units per gram of the oil), sitosterols, dihydrositosterol and other cryst alcohols and phospholipids. Review: E. W. Eckey, Vegetable Fats and Oils (Reinhold, New York, 1954) pp 291-293.