Molecular structure of vitamin C Stock Image C040/4336 Science Photo Library
Vitamin A is a general term encompassing various fat-soluble substances such as retinol, retinyl palmitate, and beta-carotene. Its various metabolites are essential for vision, cellular differentiation, epithelial barrier function, and immune function. Vitamin A is obtained through the diet in two forms. Preformed vitamin A (retinol and retinyl.
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When the body requires vitamin A, it is released from the liver, transported in the blood by the retinol binding protein, and subsequently delivered to other tissues. Animal Sources: Animal-derived foods are rich in preformed vitamin A. Prime sources include liver, kidney, egg yolk, milk, cheese, and butter.
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Vitamin A is not present in plants, but many vegetables and fruits contain one or more of a class of pigments that can be converted to vitamin A in the body; of these pigments, beta- carotene ( provitamin A) is an excellent source of vitamin activity.
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1 331 Click to enlarge Vitamins are an important part of our diet, but you probably haven't given a great deal of thought to their chemical structures. This graphic shows chemical structures for all 13 vitamins; though there can be some variability in these structures in sources of the vitamins, these are generally representative.
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"Vitamin A" is the generic term for a group of fat-soluble compounds found in both animal and plant foods. Functions in your body Vitamin A is essential for your health. It supports cell.
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The structure of vitamin A - PMC. Journal List. Biochem J. v.26 (4); 1932. PMC1261021. As a library, NLM provides access to scientific literature. Inclusion in an NLM database does not imply endorsement of, or agreement with, the contents by NLM or the National Institutes of Health.
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applications), vitamin A palmitate 4 (for application in human nutrition), and retinol 1 itself (applications in personal care, mainly in skin-care products). Retinal 5 and retinoic acid 6 are the oxidized forms of retinol and make up the family of the retinoids. 2023 marks 75 years of chemical production of vitamin A acetate.
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The Daily Value used in nutrition labelling is based on 1000 RE of vitamin A for a reference diet (Note: RE equals retinol equivalents). For example, if a food product has 132 RE of vitamin A, the product would have a % Daily Value for vitamin A of 13%. (132 RE ÷ 1000 RE) × 100 = 13%.
Vitamin A retinol structural chemical formula Stock Vector Image by ©eshana_blue 275479212
Retinol Retinol, also called vitamin A1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. [2] Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes, immune function and reproductive development. [2]
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Retinyl acetate ( retinol acetate, vitamin A acetate) is a natural [dubious - discuss] form of vitamin A which is the acetate ester of retinol. It has potential antineoplastic and chemopreventive activities. [2] [3]
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Vitamin A: β-Carotene is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. Nicotinamide Adenine Dinucleotide (NAD) β-carotene is the molecule that gives carrots, sweet potatoes, squash, and other yellow or orange vegetables their orange color. It is part of a family of chemicals called the.
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Context 1. A, also called retinol (the active form of vitamin A), is a fat-soluble vitamin with a molecular formula C20H30O and molar mass: 286.45 g/mol. The IUPAC name is 3,7-dimethyl-9-.
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An analysis of biochemical data from 2003-2006 NHANES data indicates that less than 1% of the U.S. population has a serum retinol level of less than 20 mcg/dL, which indicates that vitamin A deficiency is uncommon in the U.S. population [ ].
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Publisher Summary. This chapter discusses the chemistry and physiology of vitamin A. Chemical work on vitamin A depends on the establishment of biological activity. In the preparation of vitamin A concentrates by extraction from fish liver oils, the distribution of the vitamin can be adequately checked by determination of the ultraviolet.
The chemical structure of different forms of vitamin A. Download Scientific Diagram
Simple Structure Advanced History Comment on this record 3D Vitamin A Molecular Formula CHO Average mass 286.452 Da Monoisotopic mass 286.229675 Da ChemSpider ID 393012 - Double-bond stereo More details: Featured data source Names Properties Searches Spectra Vendors Articles More Names and Synonyms Database ID (s)
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compound Summary Retinol PubChem CID 445354 Structure Chemical Safety Laboratory Chemical Safety Summary (LCSS) Datasheet Molecular Formula C20H30O Synonyms retinol Vitamin A all-trans-Retinol 68-26-8 Vitamin A1 View More. Molecular Weight 286.5 g/mol Computed by PubChem 2.2 (PubChem release 2021.10.14) Dates Create: 2004-09-16 Modify: 2023-12-30