Wheat germ oil is extracted from the germ of the wheat kernel, which makes up 2-3% by weight of whole grain wheat.^[1] Wheat germ may yield 8-14% of oil in its total content.^[1]

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In a reference amount of 100 grams (3.5 oz), wheat germ oil supplies 884 calories.^[2] Wheat germ oil has a high content of vitamin E (149 mg/100g),^[2] the content of which diminishes substantially due to oxidation by extrusion treatment, oven-roasting or storage for 6 weeks.^[1] As a cooking oil, it is strongly flavored and easily perishable.^{[citation needed]}

Wheat germ oil contains the following fatty acids:^[1][2]

Wheat germ oil is rich in phytosterols, especially campesterol and beta-sitosterol, which remain stable in content during long-term storage.^[1] It also contains octacosanol, a 28-carbon long-chain sterol found in vegetable waxes.^[1]

• Rice bran oil