Vitamin B6 (Pyridoxine): Vitamers, Metabolism and Nutritional Importance

Vitamin B6 refers to a group of compounds, including pyridoxine, pyridoxal, and pyridoxamine, which are converted into the active coenzyme pyridoxal 5′-phosphate (PLP).

Vitamin B6 is involved in more than 100 enzymatic reactions, particularly those related to amino acid metabolism and protein utilisation.
It also plays a role in neurotransmitter synthesis and red blood cell formation, making it essential for both metabolic and neurological function.

Vitamin B6 is sensitive to:
‣ Heat
‣ Light
‣ Processing conditions
Losses may occur during manufacturing and storage, particularly in complex matrices.

Vitamin B6 is widely supplemented in feed, premixes, and fortified foods.
It is particularly important in high-protein diets due to its role in amino acid metabolism.

Due to the presence of multiple vitamers and potential degradation, accurate analysis is essential to:
‣ Quantify total vitamin B6 content
‣ Ensure correct formulation
‣ Support nutritional labelling and quality control