Vitamin B1 (thiamine) in food and dietary supplements

Determination of vitamin B1 (thiamine) in food with an HPLC-MS/MS method, or in dietary supplements with a UPLC-MS/MS method.

According to Regulation (EU) No 1169/2011, thiamine content may be included in the nutrition declaration for food products if it is present in significant amounts. Considering the daily reference intake (DRI) of 1.1 mg, thiamin can be declared in at least the following amounts:

• 165 µg/100 g or 100 ml in products other than beverages (15% of DRI)

• 82.5 µg/100 ml in beverages (7.5% of DRI)

• 165 µg per portion if the package contains a single portion (15% of DRI)

Foods and beverages that contain at least the above amounts of thiamine are considered sources of thiamine. Such products may be labeled with additional health claims, such as:

• Thiamine contributes to normal energy-yielding metabolism

• Thiamine contributes to normal functioning of the nervous system

• Thiamine contributes to the normal function of the heart

• Thiamine contributes to normal psychological function

More information on permitted nutrition and health claims can be found in Regulations (EC) No 1924/2006 and (EU) No 432/2012.