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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.
- Hrvatski
Vitamin C nikako ne doprinosi mršavljenju, ali svakako sam...
- Camu Camu
Dried camu camu seeds. Myrciaria dubia, commonly known as...
- Chemistry of Ascorbic Acid
Ascorbic acid is an organic compound with formula C 6 H 8 O...
- Vitamin C (Disambiguation)
Vitamin C is an essential nutrient, the compound L-ascorbic...
- Hrvatski
- History
- Sources
- Functions of Vitamin C in The Body
- Vitamin C Deficiency
- Daily Requirement
- Therapeutic Uses
- Vitamin C Advocacy
Through history the need for people to eat fresh plant food to help them get through long siegesor long sea trips was known by some wise people but was often forgotten. The first attempt to prove this idea was by a ship's doctor in the Royal Navy called James Lind. At sea in May 1747 he gave some crew members lemonjuice as well as their normal food...
Plant sources
Citrus fruits (such as lime, Indian gooseberry, lemon, orange, and grapefruit) are good sources of vitamin C. Other foods that are good sources of vitamin C include papaya, broccoli, brussels sprouts, blackcurrants, strawberries, cauliflower, spinach, cantaloupe, sweet peppers, and kiwifruit. The following table is to give an idea of how much vitamin C is in different plant foods. Each individual fruit will vary. The amount of vitamin C in foods of plant origin depends on the kind of plant, t...
Animal sources
Most species of animals synthesise their own vitamin C. It is therefore not a vitamin for them. It is made by a series of enzyme-driven steps which convert glucose to ascorbic acid. This is done either in the kidneys (reptiles and some birds), or the liver (mammals and perching birds). The loss of an enzyme which is essential for ascorbic acid synthesis has occurred quite frequently in evolution. It has happened in most fish, many birds; some bats, guinea pigs and most but not all primates, i...
Artificial chemical synthesis
Vitamin C is produced from glucose by two main routes. The Reichstein process developed in the 1930s uses a single pre-fermentation followed by a purely chemical route. The more modern Two-Step fermentation process was originally developed in Chinain the 1960s, uses additional fermentation to replace part of the later chemical stages. Both processes yield approximately 60% vitamin C from the glucose feed. In 1934, the Swiss pharmaceutical company Hoffmann-La Roche was the first to mass-produc...
In living organisms, ascorbate is an antioxidant, since it protects the body against oxidative stress. It is also a cofactor in at least eight enzymatic reactions, including several collagen synthesis reactions that cause the most severe symptoms of scurvy when they are dysfunctional.In animals, these reactions are especially important in wound-hea...
Lack of ascorbic acid in the daily diet leads to a diseasecalled scurvy, a form of avitaminosisthat is characterized by: 1. Loose teeth 2. Superficial bleeding 3. Fragility of blood vessels 4. Poor healing 5. Compromised immunity 6. Mild anemia.
A healthy person on a balanced western diet should be able to get all the vitamin C needed to prevent the symptoms of scurvy from their daily diet. People who smoke, those under stress and women in pregnancy have a slightly higher requirement. The amount of vitamin C needed to avoid deficiency symptoms and maintain health has been set by variously ...
Vitamin C is needed in the diet to prevent scurvy. It also has a reputation for being useful in the treatment of colds and flu. The evidence to support this idea, however, is ambiguous and the effect may depend on the dose size and dosing regime. The Vitamin C Foundationrecommends 8 grams of vitamin C every half hour to show an effect on cold sympt...
Fred R. Klenner, a doctor in Reidsville, North Carolina reported in 1949 that poliomyelitis yielded to repeated megadoses of intravenousvitamin C. Nobel Prize winning chemist Linus Pauling began actively promoting vitamin C in the 1960sas a means to greatly improve human health and resistance to disease. Some medical and scientific opinion sees vit...
Aug 10, 2023 · Learn about vitamin C, a nutrient that helps form blood vessels, cartilage, muscle and collagen, and protects your cells from free radicals. Find out the recommended daily amount, food sources, supplements, side effects and interactions of vitamin C.
Nov 13, 2023 · This article explores what vitamin C does, where we can get it, how much vitamin C is the right amount, and who may need to take supplements. What are the health benefits of vitamin C?...
Learn about the functions, sources, recommended amounts, and health effects of vitamin C, a water-soluble antioxidant and collagen maker. Find out how vitamin C can prevent scurvy, boost iron absorption, and improve skin health.
Mar 27, 2024 · Vitamin C is a water-soluble, carbohydrate-like substance that is involved in certain metabolic processes of animals. Although most animals can synthesize vitamin C, it is necessary for the diet of some, including humans and other primates, to prevent scurvy. Vitamin C is also called ascorbic acid.
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For information on vitamin C and COVID-19, see Dietary Supplements in the Time of COVID-19. Introduction. Vitamin C, also known as L-ascorbic acid, is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement.
