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Here is a general comparison of key polyphenols and vitamins commonly found in these oils. Exact percentages for every polyphenol and vitamin in common pressed vegetable oils vary depending on factors like processing methods, cultivar, and region.
Notes:
Polyphenol content:
Cold-pressed and extra-virgin oils tend to have much higher polyphenol levels than refined oils.
• Vitamin E (α-tocopherol) is the predominant vitamin in most vegetable oils.
• Vitamin K is present mainly in olive, avocado, and canola oils.
• Grapeseed and sunflower oils are particularly high in vitamin E but have lower polyphenol content.
• Sesame oil has unique lignans (sesamin, sesamolin), which act as antioxidants.
| Oil Type | Key Polyphenols | Polyphenol Content (mg/kg) | Key Vitamins | Vitamin Content (per 100g) |
|---|---|---|---|---|
| Olive Oil | Hydroxytyrosol, Tyrosol, Oleuropein, Lignans | 50–800 | Vitamin E (~14mg), Vitamin K (~60µg) | Vitamin E: 14mg, Vitamin K: 60µg |
| Avocado Oil | Pinoresinol, Secoisolariciresinol, Flavonoids | 10–150 | Vitamin E (~12mg), Vitamin K (~40µg) | Vitamin E: 12mg, Vitamin K: 40µg |
| Grapeseed Oil | Procyanidins, Catechins, Quercetin | 0–20 | Vitamin E (~28mg) | Vitamin E: 28mg |
| Canola Oil | Sinapic acid, Ferulic acid, Lignans | 0–30 | Vitamin E (~18mg), Vitamin K (~71µg) | Vitamin E: 18mg, Vitamin K: 71µg |
| Sunflower Oil | Chlorogenic acid, Caffeic acid, Tocopherols | 0–30 | Vitamin E (~41mg) | Vitamin E: 41mg |
| Coconut Oil | Ferulic acid, Caffeic acid (trace amounts) | <10 | Vitamin E (very low, ~0.2mg) | Vitamin E: 0.2mg |
| Sesame Oil | Sesamin, Sesamolin, Pinoresinol | 200–500 | Vitamin E (~1.4mg), Vitamin K (~13µg) | Vitamin E: 1.4mg, Vitamin K: 13µg |
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