Table 1. Contents of ω-3 and ω-6 PUFAs in selected plant and animal-based food
| Dietary sources | ALA (18:3, ω-3) | EPA (20:5, ω-3) | DHA (22:6, ω-3) | LA (18:2, ω-6) | AA (20:4, ω-6) | ω-6/ω-3 ratio | Units | References |
| Microalgae | Schizochytrium sp. | 0.97 | 1.90 | 202.62 | 0.15 | 0.59 | 0.0:1 | mg/g DP | Xu et al. (2021) |
| Fishes | Salmon (raw) | - | 1.01 | 0.94 | - | - | 0.0:1 | g/100 g | USDA (2015) |
| Herring (raw) | - | 0.97 | 1.18 | - | - | 0.0:1 | g/100 g | USDA (2015) |
| Plant oils | Flaxseed | 53.4 | - | - | 14.3 | - | 0.3:1 | g/100 g | USDA (2015) |
| Perilla | 62.6 | - | - | 15.4 | - | 0.3:1 | g/100 g | Kawamura et al. (2022) |
| Soybean | 6.79 | - | - | 50.42 | - | 7.4:1 | g/100 g | USDA (2015) |
| Corn | 1.16 | - | - | 53.23 | - | 45.9:1 | g/100 g | USDA (2015) |
| Grains | Wheat | 4.04 | - | - | 59.09 | - | 14.6:1 | g/kg total FA | Ozturk et al. (2012) |
| Barley | 4.52 | - | - | 56.65 | - | 12.5:1 | g/kg total FA | Ortiz et al. (2021) |
| Pastures | Grass hey | 61.62 | - | - | 14.09 | - | 0.2:1 | g/kg total FA | Krusinski et al. (2023) |
| Grass silage | 54.27 | - | - | 12.24 | - | 0.2:1 | g/kg total FA | Mierlita et al. (2022) |
| Alfalfa hay | 17.95 | - | - | 8.25 | - | 0.5:1 | g/kg total FA | Mierlita et al. (2022) |
| Animals products | Beef (lean, sirloin) | 4 | 0 | 0 | 33 | 5 | 9.5:1 | g/kg total FA | USDA (2011) |
| Pork (lean, trimmed) | 4 | 0 | 0 | 95 | 10 | 26.3:1 | g/kg total FA | USDA (2011) |
| Chicken (light meat) | 7 | 3 | 10 | 179 | 26 | 9.3:1 | g/kg total FA | USDA (2011) |
| Milk (whole) | 15 | 0 | 0 | 23 | 0 | 1.5:1 | g/kg total FA | USDA (2011) |
| Egg (yolks) | 4 | 0 | 4 | 134 | 17 | 18.9:1 | g/kg total FA | USDA (2011) |
PUFAs, polyunsaturated fatty acids; ALA, alpha-linolenic acid; EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid; LA, linoleic acid; AA, arachidonic acid; DP, dried powder; FA, fatty acids.