Vitamin
A: retinol (in cod liver oil).
B1: thiamine (rice bran).
B2: riboflavin (meat, eggs).
B3: niacin (meat, eggs, grains).
B5: pantothenic acid (meat, whole grains, in many foods).
B6: pyridoxine (meat, dairy products).
B7: biotin (meat, dairy products, eggs).
B9: folic acid (leafy green vegetables).
B12: cobalamins (liver, eggs, animal products).
C: ascorbic acid (citrus, most fresh foods).
D: calciferol (cod liver oil):
– D3: cholecalciferol.
– D2: ergocalciferol.
E: tocopherol (wheat germ oil, unrefined vegetable oils).
K1: phylloquinone (leafy green vegetables).
| Year of discovery | Vitamin | Food source |
|---|---|---|
| 1913 | Vitamin A (Retinol) | Cod liver oil |
| 1910 | Vitamin B1 (Thiamine) | Rice bran |
| 1920 | Vitamin C (Ascorbic acid) | Citrus, most fresh foods |
| 1920 | Vitamin D (Calciferol) | Cod liver oil |
| 1920 | Vitamin B2 (Riboflavin) | Meat, eggs |
| 1922 | Vitamin E (Tocopherol) | Wheat germ oil, unrefined vegetable oils |
| 1926 | Vitamin B12 (Cobalamins) | liver, eggs, animal products |
| 1929 | Vitamin K1 (Phylloquinone) | Leafy green vegetables |
| 1931 | Vitamin B5 (Pantothenic acid) | Meat, whole grains, in many foods |
| 1931 | Vitamin B7 (Biotin) | Meat, dairy products, eggs |
| 1934 | Vitamin B6 (Pyridoxine) | Meat, dairy products |
| 1936 | Vitamin B3 (Niacin) | Meat, eggs, grains |
| 1941 | Vitamin B9 (Folic acid) | Leafy green vegetables |
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