Search Results - Ascorbic acid
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190-192&_160;°C, 463-465&_160;K, 374-378&_160;°F (decomposes) Ascorbic acid, the formula of which is C6H8O6, behaves as a vinylogous carboxylic acid, wherein the double bond ("vinyl") transmits electron pairs between the hydroxyl and the carbonyl. There are two resonance structures for the deprotonated form, differing in the position of the double bond. Another way to look at ascorbic acid is to consider it as an enol. The deprotonated form is an enolate, which is usually strongly basic. However, the adjacent double bond stabilizes the deprotonated form. Ascorbic acid also rapidly interconverts into two unstable diketone tautomers by proton transfer, although it is the most stable in the enol form. The proton of the enol is lost, and reacquired by electrons from the double bond, to produce a diketone. This is an enol reaction. There are two possible forms 1,2-diketone and 1,3-diketone.
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Showing 1 to 24 of 24 Articles matching 'Ascorbic acid' in related articles. |
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1. The new 2 liter solution was as effective as the 4 liter solution
August 21, 2008
The addition of ascorbic acid not only improves the taste, italso reduces the effective volume of solution needed for adequategut cleansing, Dr. Christian Ell, from Dr. Horst Schmidt Kliniken,Wiesbaden, Germany and colleagues report in the American Journal ofGastroenterology. They tested the safety, efficacy and acceptability of the 2 literpolyethylene glycol plus ascorbic acid solution (PEG+Asc; Moviprep,Norgine, Harefield UK) with that of the standard 4 liter PEG pluselectrolytes solution (PEG+E; Klean-Prep, also from Norgine) forbowel cleansing before colonoscopy. Both groups drank ha... (read more)
Author: wp stjerne
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2. What's in a cigarette?
August 15, 2008
Tobacco companies are fighting the disclosure of the ingredients found in cigarettes, claiming it to be a 'trade secret'. But we do know that a cigarette contains over 4,000 chemicals, of which most of them are harmful. Here is the list of substances that are 'harmless' and that we use possibly everyday. 1. Ascorbic Acid 2. Basil Oil 3. Beeswax 4. Butter Oil 5. Caffeine 6. Chocolate 7. Coconut Oil 8. Corn Oil 9. Honey 10. Lavender Oil 11. Malic Acid (found in apples) 12. Plum Juice ( yummy!!!) 13. Tannic Acid (found in tea) 14. Vinegar 15. Yeast Sounds unbelievable huh... (read more)
Author: George Yeo
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3. Natural Cure for Gallstones - Keep Your Gallbladder and Pass Your Gallstones
June 27, 2008
A natural cure for gallstones is a lot simpler and possibly more effective than gallbladder surgery. But before you I tell you about this simple treatment, I would like to congratulate you on not choosing to remove your gallbladder. Because it could save your life!
Almost a half a million people naively choose to go through with gallbladder surgery without even trying simple alternative treatments that could pass your gallstones. But before you mistake me as 'old fashioned', did you know that hundreds of doctors will only allow patients to get a cholecystectomy as a last resort? This ... (read more)
Author: Joe Barton
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4. Kidney Stones and Vitamin C
May 19, 2008
The vitamin C plays important role for preventing and dissolving kidney stones into urine. Therefore, if you are suffering from kidney stone, then your diet, which is prescribed by the physician, should contain the food material with vitamin C. So when there is the combination of kidney stone and vitamin C in your urine it will be surely dissolved in the urine.
The calcium phosphate stone which is commonly find in a urinary region is not acidic in nature. The Ascorbic acid which is commonly form of vitamin c is used to acidify the urine and so it assists for dissolving phosphate. So that ... (read more)
Author: Russ Anderson
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5. Scurvy - Causes, Symptoms and Treatment
May 08, 2008
Scurvy is perhaps the oldest known deficiency disease. However, its specific relationship to ascorbic acid was not recognized until the 20th century. It generally occurs between six and 18 months of age, but can start much earlier in pre-mature babies or those borne of mothers who lacked nutritious food during their later stages of pregnancies.
Scurvy is very rare in countries where fresh fruits and vegetables are readily available and where processed foods have vitamin C added. Vitamin C is an important antioxidant vitamin involved in the development of connective tissues, lipid and vita... (read more)
Author: Peter Hutch
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6. Scurvy- it's causes, symptoms and treatment
April 20, 2008
Scurvy:
Scurvy is a condition caused by a lack of vitamin C (ascorbic acid) in the diet. Signs of scurvy include tiredness, muscle weakness, joint and muscle aches, a rash on the legs, and bleeding gums. In the past, scurvy was common among sailors and other people deprived of fresh fruits and vegetables for long periods of time.
Scurvy is very rare in countries where fresh fruits and vegetables are readily available and where processed foods have vitamin C added. It is found in fruits, especially citrus fruits like oranges, lemons, and grapefruit, and in green leafy vegetables like ... (read more)
Author: Peter Hutch
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7. Vitamin C: Benefits, Side Effects and Deficiency
April 16, 2008
We all need vitamins and minerals to keep us healthy and strong. These are essential to our overall well being and the state of our mind and body. How Can This Vitamin Help Me? Vitamin C, ascorbic acid, is a water soluble vitamin. Vitamin C is an excellent antioxidant and has the ability to prevent certain types of cancer. It keeps the skin, bones and blood vessels healthy. helps in the synthesis of collagen that aids the proper functioning of heart tissues and blood vessels. It also assists the nervous system to function effectively. It helps the immune system function properly by a... (read more)
Author: Dub Jackson
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8. What Do Kidney Stones And Vitamin C Have In Common?
April 10, 2008
The vitamin C plays important role for preventing and dissolving kidney stones into urine. Therefore, if you are suffering from kidney stone, then your diet, which is prescribed by the physician, should contain the food material with vitamin C. So when there is the combination of kidney stone and vitamin C in your urine it will be surely dissolved in the urine.
The calcium phosphate stone which is commonly find in a urinary region is not acidic in nature. The Ascorbic acid which is commonly form of vitamin c is used to acidify the urine and so it assists for dissolving phosphate. So that ... (read more)
Author: Muna wa Wanjiru
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9. How Vitamin C Is Beneficial For Health?
April 01, 2008
Vitamin C (ascorbic acid) assists the body in the production of collagen, a basic component of connective tissues. Collagen is an important structural element in blood vessel walls, gums, and bones, making it particularly important to those recovering from wounds and surgery.
Vitamin C is a water-soluble vitamin. Vitamin C is a powerful antioxidant and is needed for the production of collagen, the "glue" that strengthens the bodies muscles and blood vessels. Vitamin C is also important in wound healing as a natural antihistamine, fighting viruses, and aids in the formation of liver bile. ... (read more)
Author: Corwin Brown
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10. Vitamin C and the Strength-Power Athlete-Vitamin
March 17, 2008
Although little research has been conducted on the ascorbic acid (vitamin C) needs of strength-power athletes (SPAs), what we know about the functions of ascorbic acid indicate that SPAs should probably be consuming ascorbic acid at levels above the Recommended Dietary Allowance (RDA). Research clearly shows that deficiency, or even marginal ascorbic acid status, can adversely affect physical performance. For example, muscle weakness is a common symptom of vitamin C deficiency.
Vitamin C has several functions that would be important to the performance of SPAs. For example, vitamin C is n... (read more)
Author: Robert Baird
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11. Vitamin C Functions and Information
March 25, 2008
Vitamin C also known as, ascorbic acid, L-ascorbic acid, dehydroascorbic acid, the antiscorbutic vitamin, L-xyloascorbic acid and L-threo-hex-2-uronic acidy-lactone, is a much talked about vitamin, with people claiming it as a cure-all for may diseases and problems - from cancer to the common cold. Vitamin C is a water-soluble antioxidant and can quench both reactive oxygen species and reactive nitrogen species. This antioxidant activity diminishes lipid peroxidation, oxidative DNA damage and oxidative protein damage. Oxidation of low density lipoprotein (LDL) has been suggested to be a factor... (read more)
Author: Corwin Brown
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12. Vitamin C - Deficiency, Benefits and Functions
December 11, 2007
Vitamin C is known as ascorbic acid as well. It offers a whole slew of benefits to our health. Vitamin C helps in maintaining the balance in ligaments, tendons and other adjacent tissues. It is commonly found in fruits and vegetables such as potatoes. Vitamin C has anti-oxidant property, so it helps us fighting with the symptoms of ageing. Not only that, due to its anti-oxidant property it helps us to preserve healthy blood cells from becoming collapsed from the toxic substances in the air that may even lead to cancer in some cases.
Vitamin C Functions
Vitamin C benefits us a lot. Th... (read more)
Author: Dr John Anne
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13. Vitamin C Supplements
December 10, 2007
rose hips. Mortersupplements.com provides a good vitamin c supplement from rose hips (http://mortersupplements.com/chewcberry1.html). A Google search will likely turn up other possibilities. Expect to pay about $20 a bottle for a natural vitamin c supplement. And remember, if the bottle doesn't say where the vitamin c comes from, it's likely a synthetic source. Also, if the amount of vitamin c per tablet is higher than 200 mg it's virtually always from a synthetic source (and probably from China).
If you'd like more accountability in your vitamin c supplement, look for one that's made fr... (read more)
Author: Brian Balster
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14. Why is Vitamin C good for Skin Care?
October 26, 2007
Recent studies confirmed that vitamin C and its derivatives used in manufacturing skin care products can truly enhance the quality of skin in a few different ways. Vitamin C has anti-oxidant property which confirms its ability to fight against free radicals that are directly associated with ageing process and its apparent symptoms. Free radicals in particular refer to unstable molecule that can profoundly contribute to different symptoms associated with ageing. This article explores different essential qualities and functions of vitamin C for skin care. Functions of Vitamin C Vitamin C effec... (read more)
Author: Dr John Anne
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15. Vitamin C Skin Products
October 09, 2007
Topical vitamin C must be in the form of L-ascorbic acid to be useful to the body and skin. L-ascobic acid is unstable and tends to break down rapidly, that's why it is so difficult to produce for cosmetic preparations. The Cellex-C line offers a wide selection of skin care products, including cleansers, exfoliators, moisturizers, and treatments, which reverse the effects of aging producing younger-looking skin. The most common fat soluble Vitamin C derivative in skin care products is ascorbyl palmitate. This ingredient is more stable and less irritating than Vitamin C. Another derivative is t... (read more)
Author: Juliet Cohen
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16. Importance of Vitamin C For Glowing Skin
August 20, 2007
Vitamin C (ascorbic acid) is a water-soluble vitamin, which is necessary in the body to form collagen in bones, cartilage, muscle, and blood vessels, and aids in the absorption of iron. Vitamin C is also a highly effective antioxidant. Even in small amounts vitamin C can protect indispensable molecules in the body, such as proteins, lipids (fats), carbohydrates, and nucleic acids from damage by free radicals and reactive oxygen species that can be generated during normal metabolism as well as through exposure to toxins and pollutants (e.g. smoking). Vitamin C may also be able to regenerate oth... (read more)
Author: Juliet Cohen
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17. The Benefits of Vitamin C
August 11, 2007
Vitamin C is a water-soluble vitamin. Vitamin C (ascorbic acid) assists the body in the production of collagen, a basic component of connective tissues. Vitamin C is also important in wound healing as a natural antihistamine, fighting viruses, and aids in the formation of liver bile. Collagen is an important structural element in blood vessel walls, gums, and bones. Vitamin C also acts as an antioxidant, scavenging potentially harmful molecules called free radicals. Vitamin C could help reduce some of the complications associated with diabetes. Vitamin C neutralises free radicals, while Telmis... (read more)
Author: Juliet Cohen
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18. General Description of Triphala
August 03, 2007
Triphala exactly means ‘three fruits’ i.e. three myrobalans. It is a combination of the 3 essential myrobalans. These are:-
(i) Amla or Emblica officinalis (ii) Baheda or Terminalia belerica (iii) Harad or Terminalia chebula Properties of Triphala The actions of the Triphala are reliant on the properties of its individual herbs. Let us discuss about its properties:- (i) Amla or commonly known as Indian gooseberry, is the richest source of vitamin C or ascorbic acid in the world. It is a green colored fruit that has an amla or sour taste due to its acidic ingredients. Amla fruit is s... (read more)
Author: andrew philip
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19. Do You Know These Secrets of Vitamin C?
July 26, 2007
Vitamin C also known as Ascorbic Acid is a water-soluble, antioxidant vitamin. It is important for the development of collagen. Collagen is a protein that gives structure to bones, cartilage, muscle, and blood vessels. Collagen has many benefits, supports a range of the body's structures and is necessary to the formation of bones and teeth
Humans, unlike most other animals, do not generate their own vitamin C, and they need to take it through foods sources which are rich in Vitamin C. This vitamin is measured a cure-all for a lot of diseases and problems - from cancer to common cold. ... (read more)
Author: tom alter
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20. Benefits of Taking Vitamin C
May 15, 2007
Vitamin C is a water-soluble nutrient that plays vital roles in keeping you healthy. It is also known as ascorbic acid.
Vitamin C is found in citrus fruit like oranges and lemons as well as other fresh fruits like berries and melons. Vegetables such as tomatoes, broccoli and potatoes are also great sources of vitamin C.
Vitamin C is a powerful antioxidant. Antioxidants neutralize free radicals and stop them from causing damage.
Vitamin C commonly thought of mainly in prevention of colds, flu and scarlet fever, is being rediscovered for help in allergies. In various controlled s... (read more)
Author: Hamoon Arbabi
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21. Amount of Taking Vitamin C
May 15, 2007
Vitamin C (ascorbic acid) is a weak acid that aids in various metabolic process and helps prevent disease. It is also an antioxidant, eliminating free radicals which cause cell damage and impair the immune system.
Your body can't store vitamin C or make it, so you need to try and get some every day. But how much should we take?
Vitamin C deficiency
Vitamin C deficiency in humans leads to scurvy. Early symptoms in adults include fatigue, weakness, aching joints and muscles. In later stages, scurvy is characterized by anemia, bleeding from the gums, petechial and sheet hemorrhages... (read more)
Author: Hamoon Arbabi
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22. Vitamin C Antioxidant
February 28, 2007
We have all heard of the benefits of Vitamin C; perhaps even see it as a kind of wonder cure to aid those trying to prevent the
common cold every winter. You may be interested to learn that this antioxidant also goes by the name of ascorbic acid. Take a
look at the ingredients labels on the back on some food products in your kitchen and you'll probably be surprised to learn how
frequently you eat Vitamin C. It's used as a preservative. Many dried fruits are coated with ascorbic acid powder to keep them from
browning during dehydration and it lends that familiar sour... (read more)
Author: vincent platania
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23. Treatment of Scurvy
February 27, 2007
Scurvy (N.Lat scorbutus) is a deficiency disease, caused by lack of vitamin C, which is required for collagen (an element of normal tissues) synthesis in humans. The chemical name of vitamin C is ascorbic acid, which is derived from the Latin name of scurvy, scorbutus. Vitamin C is found mainly in fresh fruits and vegetables, particularly citrus fruits such as oranges, olives, lemon, sweet lemon. Reduction in intake of Vitamin C rich food products, leads to scurvy.
History of the disease:
Scurvy historically affected mostly those nations, which were dependent more on military power... (read more)
Author: Candy Williams
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24. Benefits of Vitamin C, Sources and Deficiency
February 04, 2007
Vitamin C is a water-soluble, antioxidant vitamin. It is important for the formation of collagen - a protein that gives structure to bones, cartilage, muscle, and blood vessels. Vitamin C also aids in the absorption of iron, and helps maintain capillaries, bones, and teeth. Vitamin C is also known as, ascorbic acid, L-ascorbic acid, the antiscorbutic vitamin, L-xyloascorbic acid. This vitamin is considered a cure-all for many diseases and problems - from cancer to common cold. Yet, the interesting fact is that this miracle vitamin cannot be manufactured by the body, and needs to be ing... (read more)
Author: tom alter
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