| 摘要 |
In the present invention, there is disclosed the use of a mixture of vitamin B6, vitamin B12 and folic acid as an addition into flour in a weight ratio of 1.5 to 3 mg of vitamin B6, 3 to 7 {mu}g of vitamin B12 and 130 to 750 {mu}g of folic acid per 100 g of flour. |
