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Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits, berries and vegetables. It is also a generic prescription medication and in some countries is sold as a non-prescription dietary supplement.
These compounds are water-soluble and, thus, cannot protect fats from oxidation: For this purpose, the fat-soluble esters of ascorbic acid with long-chain fatty acids (ascorbyl palmitate or ascorbyl stearate) can be used as antioxidant food additives. Sodium-dependent active transport process enables absorption of Ascorbic acid from the intestine.
Citric acid is an alpha hydroxy acid and is an active ingredient in chemical skin peels. [36] Citric acid is commonly used as a buffer to increase the solubility of brown heroin. [37] Citric acid is used as one of the active ingredients in the production of facial tissues with antiviral properties. [38]
As the sodium salt of ascorbic acid, it is known as a mineral ascorbate. It has not been demonstrated to be more bioavailable than any other form of vitamin C supplement. [2] Sodium ascorbate normally provides 131 mg of sodium per 1,000 mg of ascorbic acid (1,000 mg of sodium ascorbate contains 889 mg of ascorbic acid and 111 mg of sodium).
The main organic acids found in orange juice are citric, malic, and ascorbic acid. The major sugars found in orange juice are sucrose, glucose, and fructose. There are approximately 13 phenolic compounds in orange juice including hydroxycinnamic acids, flavanones, hydroxybenzoic acids, hesperidin, narirutin, and ferulic acid. [39]
Erythorbic acid (isoascorbic acid, D-araboascorbic acid) is a stereoisomer (C5 epimer) of ascorbic acid . [1] It is synthesized by a reaction between methyl 2-keto-D-gluconate and sodium methoxide. It can also be synthesized from sucrose or by strains of Penicillium that have been selected for this feature. [2]
Ascorbic acid: Found in oranges and green peppers and gives a crisp, slightly sour taste, better known as vitamin C. C 6 H 8 O 6: 4.10 Citric acid: Found in citrus fruits and gives them their sour taste. C 6 H 8 O 7: 3.13 Fumaric acid: Found in bolete mushrooms, Icelandic moss and lichen. Not found in fruits, used as a substitute for citric and ...
The literature contains many reports on the antiviral effects of vitamin C, [14] and one study suggests dehydroascorbic acid has stronger antiviral effects and a different mechanism of action than ascorbic acid. [15] Solutions in water containing ascorbic acid and copper ions and/or peroxide, resulting in rapid oxidation of ascorbic acid to ...