Retinal and Vitamin A

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Difference between Retinal and Vitamin A

Retinal vs. Vitamin A

Retinal is also known as retinaldehyde. Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene).

Alcohol

In chemistry, an alcohol is any organic compound in which the hydroxyl functional group (–OH) is bound to a carbon.

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Aldehyde

An aldehyde or alkanal is an organic compound containing a functional group with the structure −CHO, consisting of a carbonyl center (a carbon double-bonded to oxygen) with the carbon atom also bonded to hydrogen and to an R group, which is any generic alkyl or side chain.

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Alpha-Carotene

α-Carotene is a form of carotene with a β-ionone ring at one end and an α-ionone ring at the opposite end.

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Beta-Carotene

β-Carotene is an organic, strongly colored red-orange pigment abundant in plants and fruits.

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Beta-carotene 15,15'-dioxygenase

In enzymology, β-carotene 15,15'-dioxygenase is an enzyme with systematic name beta-carotene:oxygen 15,15'-dioxygenase (bond-cleaving).

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Carotene

The term carotene (also carotin, from the Latin carota, "carrot") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the exception of some aphids and spider mites which acquired the synthesizing genes from fungi).

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Carotenoid

Carotenoids, also called tetraterpenoids, are organic pigments that are produced by plants and algae, as well as several bacteria and fungi.

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Cryptoxanthin

Cryptoxanthin is a natural carotenoid pigment.

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Opsin

Opsins are a group of proteins, made light-sensitive, via the chromophore retinal found in photoreceptor cells of the retina.

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Retina

The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

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Retinal

Retinal is also known as retinaldehyde.

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Retinoic acid

Retinoic acid is a metabolite of vitamin A (retinol) that mediates the functions of vitamin A required for growth and development.

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Retinol

Retinol, also known as Vitamin A1, is a vitamin found in food and used as a dietary supplement.

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Rhodopsin

Rhodopsin (also known as visual purple) is a light-sensitive receptor protein involved in visual phototransduction.

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Rod cell

Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells.

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Xanthophyll

Xanthophylls (originally phylloxanthins) are yellow pigments that occur widely in nature and form one of two major divisions of the carotenoid group; the other division is formed by the carotenes.

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