Vitamer: Difference between revisions
Created page with "{{short description|Chemical compound acting as a vitamin}} Vitamins occur in a variety of related forms known as '''vitamers'''. A vitamer ({{IPAc-en|'|v|aɪ|t|ə|m|ər}}) of a particular vitamin is one of several related compounds that performs the functions of said vitamin and prevents the symptoms of deficiency of said vitamin. Early research identified vitamins by their ability to cure vitamin-specific deficiency diseases. For example, vi..." |
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{{short description|Chemical compound acting as a vitamin}} | {{short description|Chemical compound acting as a vitamin}} | ||
[[Vitamin]]s occur in a variety of related forms known as '''vitamers'''. A vitamer ({{IPAc-en|'|v|aɪ|t|ə|m|ər}}) of a particular vitamin is one of several related compounds that performs the functions of said vitamin and prevents the symptoms of deficiency of said vitamin. | [[Vitamin]]s occur in a variety of related forms known as '''vitamers'''. A vitamer ({{IPAc-en|'|v|aɪ|t|ə|m|ər}}) of a particular vitamin is one of several related compounds that performs the functions of said vitamin and prevents the symptoms of deficiency of said vitamin. | ||
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Naturally occurring vitamers of vitamin E include [[tocopherol]]s (α-, β-, γ-, and δ-) and [[tocotrienol]]s ( α-, β-, γ-, and δ-). Many plant-based foods provide all eight naturally occurring vitamers of vitamin E in varying amounts from different sources. Tocopherols are more abundant in commonly consumed foods relative to tocotrienols. Fortified foods and dietary supplements predominantly contain vitamin E as α-tocopherol salts, most frequently as [[tocopheryl acetate]] or vitamin E acetate. | Naturally occurring vitamers of vitamin E include [[tocopherol]]s (α-, β-, γ-, and δ-) and [[tocotrienol]]s ( α-, β-, γ-, and δ-). Many plant-based foods provide all eight naturally occurring vitamers of vitamin E in varying amounts from different sources. Tocopherols are more abundant in commonly consumed foods relative to tocotrienols. Fortified foods and dietary supplements predominantly contain vitamin E as α-tocopherol salts, most frequently as [[tocopheryl acetate]] or vitamin E acetate. | ||
The different naturally occurring vitamers of vitamin E are not interconverted in the body and have different metabolic effects. Newly absorbed vitamers of vitamin E are transported to the liver. The liver recognizes and preferentially re-secretes α-tocopherol into circulation, making it the most abundant vitamer of vitamin E in the blood. While tocotrienols are present in lower concentrations, they have more potent antioxidant properties than α-tocopherol and can have metabolic impacts at low concentration. | The different naturally occurring vitamers of vitamin E are not interconverted in the body and have different metabolic effects. Newly absorbed vitamers of vitamin E are transported to the liver. The liver recognizes and preferentially re-secretes α-tocopherol into circulation, making it the most abundant vitamer of vitamin E in the blood. While tocotrienols are present in lower concentrations, they have more potent antioxidant properties than α-tocopherol and can have metabolic impacts at low concentration. Normal serum concentrations of α-tocopherol in adults ranges from 5 to 20 μg/mL. | ||
=== Vitamin B<sub>6</sub> === | === Vitamin B<sub>6</sub> === | ||
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[[Category:Dietary supplements]] | [[Category:Dietary supplements]] | ||
[[Category:Vitamers| ]] | [[Category:Vitamers| ]] | ||
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