ISO/TR 23304:2021 Food products—Guidance on how to express vitamins and their vitamers content has been published!
from a story published on nen.nl website—9 June 2021
Vitamins are a complex range of structurally and biochemically unrelated chemicals that are essential to human health. They are naturally present in many foods and in some instances fortified during food production. All vitamins exist as multiple nutritionally active chemical species, often called vitamers, which present in a wide concentration range, and have diverse biological activities. This complexity of vitamer forms complicates the quantitation of analytical results and reporting of nutritional content. Food labelling is necessarily expressed in a way that incorporates the differences in bioactivities among vitamers, however vitamin activities of measured forms in regulations are often not clearly described.
The food industry manufactures a wide range of products that have vitamins both at natural levels and augmented with additional vitamin levels. Consistency and clarity are essential to this business for both customers and consumers. ISO/TR 23304 clarifies the identity of the different forms and aligns the concentrations that can sometimes be expressed in different units. The publication of this technical report will help contribute to agreement between regulatory authorities, producers of food, and test laboratories and support an improvement in nutritional labelling.