Category Archives: Tocopherol Transfer Protein (TTP)

Alpha Tocopherol: Distribution in Lipoproteins

Posted on January 2, 2015 by Robert Barrington

Vitamin E is a collection of phenolic isomers that share the same biological activity, with alpha tocopherol having the most biologically activity of all the isomers. Once vitamin E is absorbed from the gut it is passed to the liver … Continue reading →

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Vitamin E Plasma Levels

Posted on October 17, 2014 by Robert Barrington

Vitamin E is not a single vitamin, but a group of vitamers. In fact vitamin E is composed of the structurally related isomers α-, β-, γ- and δ-tocopherol amd α-, β-, γ-, and δ-tocotrienol. All of the vitamin E vitamers … Continue reading →

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Vitamin E: Natural Versus Synthetic

Posted on December 23, 2013 by Robert Barrington

Vitamin E is the main lipid soluble antioxidant in humans and protects plasma membranes from peroxidation. Structurally, vitamin E is a group of eight closely related isomers that possess the same biological activity as α-tocopherol. The biochemistry of vitamin E … Continue reading →

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Vitamin E: Lipoproteins Prefer Alpha-Tocopherol

Posted on May 8, 2013 by Robert Barrington

itamin E comprises of eight isomers; α-, β-, γ- and δ-tocopherol and α-, β-, γ- and δ-tocotrienol. The tocopherols are the more abundant vitamers in the diet with α- and γ-tocopherol contributing the most to intake. It is known that … Continue reading →

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Vitamin E Structure: Further Down the Rabbit Hole

Posted on March 3, 2013 by Robert Barrington

The nomenclature for vitamin E can be confusing because the term vitamin E refers to a group of closely related compounds that share biological activity. Vitamin E is therefore a group of vitamers, the main subdivisions of which are α-, … Continue reading →

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