Convert vitamin for correct manufacturing and labeling

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Imagine, you are a food technologist and you would like to manufacture a food product with a certain amount of fat soluble vitamin in it. You would like to export the product to different markets with different labelling regulations. On the market, there are available different raw materials with different forms of vitamins. The question is: how to correctly calculate the amount of needed raw material and find a right value for a label of the product? In this case, a table presented below can be very helpful. Let's review it.

So let’s look on some examples.

 

To convert Vitamin A as Retinol from IU to mg, we have to calculate it as:
an amount of IU / 3333 = amount in mg
so, 5000 IU of Vitamin A (Retinol) is 1.5 mg (5000/3333) of Vitamin A.

 

To convert Vitamin A as beta-Carotene from IU to mg, we have to calculate it as:
an amount of IU / 1667 = amount in mg.

 

To convert Vitamin D from IU to mcg we have to calculate it as:
an amount of IU/40 = amount in mcg
so, 400 IU of Vitamin D is 10 mcg (400/40).

 

To convert Vitamin E (if it is labelled on the product as a dl-alpha-Tocopherol ingredient) from IU to mg, we have to calculate it as:
an amount of IU * 0.909 = amount in mg
so, 30 IU of dl-alpha-Tocopherol is 27 mg (30*0.909) of Vitamin E.

 

To convert Vitamin E (if it is labelled on the product as a d-alpha-Tocopherol ingredient) from IU to mg, we have to calculate it as:
an amount of IU * 0.671 = amount in mg
so, 30 IU of d-alpha-Tocopherol is 20.1 mg (30*0.671) of Vitamin E.

 

Sometimes we have convert concentration of vitamins. For example, if a vitamin has been used in a product in esterified form and we have to report it in alcohol form. In this case please use conversion factors presented below:

  • used is Retinyl Acetate – reported is Retinol, so for reporting multiply amount of vitamin by 0.872,
  • used is Retinyl Palmitate – reported is Retinol, so for reporting multiply amount of vitamin by 0.546,
  • used is Tocopheryl Acetate – reported is Tocopherol, so for reporting multiply amount of vitamin by 0.911.
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I hope this article is helpful for you. If you have any further questions, please feel free to contact me.