Table 2. Vitamin D content in foods (mushrooms, fishes and shells, eggs, meat, pulses, milk, cereals, oils)
| Food group | Food name | Cooking method | Concentration (μg/kg) |
| n | Vitamin D2 | n | Vitamin D3 |
| Mushrooms | King oyster mushroom | Broiling | 1 | ND | 1 | ND |
| Boiling | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Oyster mushroom | Boiling | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Shiitake | Boiling | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Fishes and shells | Bonito | As is/raw | 6 | ND | 6 | 11.6-29.2 |
| Boiling | 6 | ND | 6 | 5.4-17.3 |
| Stir-frying | 6 | ND | 6 | 7.6-24.6 |
| Pollack | Boiling | 1 | ND | 1 | ND |
| Mackerel | Broiling | 6 | ND | 6 | 39.1-120.2 |
| Pan frying | 6 | ND | 6 | 24.2-49.4 |
| Anchovy | Stir-frying | 6 | ND | 6 | 29.0-124.0 |
| Squid | Stir-frying | 6 | ND | 6 | ND-7.6 |
| Shrimp | Stir-frying | 1 | ND | 1 | ND |
| Mussel | Stir-frying | 1 | ND | 1 | ND |
| Scallop | Broiling | 1 | ND | 1 | ND |
| Oyster | As is/raw | 1 | ND | 1 | ND |
| Processed products | Fish cake | Boiling | 1 | ND | 1 | ND |
| Stir-frying | 6 | ND | 6 | 4.6-13.4 |
| Eggs | Egg | Pan frying | 6 | ND | 6 | 7.8-33.1 |
| Simmering | 6 | ND | 6 | 1.7-8.2 |
| Boiling | 1 | ND | 1 | ND |
| Meat and meat products | Chicken | Deep frying | 1 | ND | 1 | ND |
| Boiling | 1 | ND | 1 | ND |
| Beef | Broiling | 6 | ND | 6 | ND |
| Boiling | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Beef, by-products | Broiling | 1 | ND | 1 | ND |
| Boiling | 1 | ND | 1 | ND |
| Pork | Deep frying | 1 | ND | 1 | ND |
| Broiling | 6 | ND | 6 | ND-12.2 |
| Stir-frying | 6 | ND | 6 | ND-7.7 |
| Boiling | 1 | ND | 1 | ND |
| Meat and meat products | Pork, by-products | Simmering | 1 | ND | 1 | ND |
| Boiling | 1 | ND | 1 | ND |
| Pork products, ham | As is/raw | 6 | ND | 6 | ND-6.8 |
| Boiling | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Pan frying | 6 | ND | 6 | ND-4.1 |
| Sausage | Boiling | 1 | ND | 1 | ND |
| Blanching | 1 | ND | 1 | ND |
| Stir-frying | 1 | ND | 1 | ND |
| Pulses | Soybean milk | As is/raw | 6 | ND | 6 | 3.1-15.3 |
| Milk and milk products | Milk | As is/raw | 1 | ND | 1 | ND |
| Cheese | As is/raw | 1 | ND | 1 | ND |
| Semisolid yoghurt | As is/raw | 6 | ND | 6 | ND-5.1 |
| Liquid yoghurt | As is/raw | 6 | ND | 6 | ND-136.9 |
| Processed products | Cereal | As is/raw | 6 | ND | 6 | 64.5-155.1 |
| Biscuit, cookie | As is/raw | 1 | ND | 1 | ND |
| Snack cookies | As is/raw | 1 | ND | 1 | ND |
| Oils | Perilla oil | As is/raw | 1 | ND | 1 | ND |
ND, not detected.