University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Selected Publication:
van den Oever, SP; Mayer, HK.
(2022):
Biologically active or just "pseudo"-vitamin B-12 as predominant form in algae-based nutritional supplements?
J FOOD COMPOS ANAL. 2022; 109, 104464
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- Abstract:
- In order to find out whether algae-based nutritional supplements contain both physiologically active vitamin B-12 and its non-active pseudo-form, a simple and fast ultra-high performance liquid chromatography method with UV detection was developed to separate these two forms. A total of 57 commercially available microalgae products based on Chlorella and Spirulina were analyzed. Results obtained showed a broad variety of the content of total vitamin B(12 )ranging from not-detectable to 445.9 mu g 100g(-1) dry matter for Chlorella samples, and be-tween 92.8 and 164.1 mu g 100g(-1) dry matter for Spirulina products. However, there was a big variation in the concentration of pseudo-vitamin B-12 within all samples analyzed. Chlorella products contained mainly physio-logically active cobalamin, while pseudo-vitamin B-12 was the prevailing form in Spirulina-labeled nutritional supplements. The importance of being able to differentiate between cobalamin and its pseudo-form in algae is not only relevant for food analysts, but also regarding consumer protection since they have to be able to rely on the correct labeling of nutritional supplements.
- Authors BOKU Wien:
- Mayer Helmut
- Van Den Oever Sabrina
- Find related publications in this database (Keywords)
- VitaminB(12)
- Pseudo-vitaminB(12)
- Microalgae
- Chlorella
- Spirulina
- Nutritional supplements
- UHPLC-PDA analysis
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