Definition of "hydroxylation" [hydroxylation]

• The introduction of a hydroxyl group into a molecule, especially by the replacement of a hydrogen atom (noun)

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• "Through a process known as hydroxylation, beta-carotene is converted into other carotenoids that can cut the amount of pro-vitamin A that is created through digestion in half, or eliminate it altogether."
• "C.1000 provides a potent dosage of this key vitamin and is blended with Bioflavonoids, which help promote the function of Vitamin C. Vitamin C.is a reducing sugar (has a reactive ene-diol structure) that is involved in biochemical processes such as hydroxylation of proline and lysine utilized in the formation of collagen and healthy connective tissue."
• "Vitamin D then undergoes hydroxylation to calcidiol (25-OHD3) in the liver and becomes the major circulating form, and then to calcitriol (vitamin D3 hormone; 1alpha 25 - (OH) 2D3) in the kidney. 1alpha, 25 - (OH) 2D3 is carried systemically to distal target organs where it binds to a vast array of nuclear receptors to generate its appropriate biological response."