ascorbic acid - définition. Qu'est-ce que ascorbic acid
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Qu'est-ce (qui) est ascorbic acid - définition

GROUP OF CHEMICAL COMPOUNDS
D-ascorbic acid; Ascorbic acid; Ascorbic acid (molecular aspects)
  • 400px
  • Semidehydroascorbate acid radical

Chemistry of ascorbic acid         

Ascorbic acid is an organic compound with formula C
6
H
8
O
6
, originally called hexuronic acid. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. It is a mild reducing agent.

Ascorbic acid exists as two enantiomers (mirror-image isomers), commonly denoted "l" (for "levo") and "d" (for "dextro"). The l isomer is the one most often encountered: it occurs naturally in many foods, and is one form ("vitamer") of vitamin C, an essential nutrient for humans and many animals. Deficiency of vitamin C causes scurvy, formerly a major disease of sailors in long sea voyages. It is used as a food additive and a dietary supplement for its antioxidant properties. The "d" form can be made via chemical synthesis but has no significant biological role.

ascorbic acid         
NUTRIENT FOUND IN CITRUS FRUITS AND OTHER FOODS
Ascorbic Acid; Hexuronic; Ascorbate; Vitamin C Overdose; Cetebe; Vitamine C; L-ascorbic acid; Vitamin C Foundation; C Vitamin; Evolution of Vitamin C; Evolution of vitamin c; Ascorbic (acid); Vitimin C; Vit c; Vitamin c; Ascorbate metabolism; ATC code G01AD03; ATCvet code QG01AD03; ATC code S01XA15; ATCvet code QS01XA15; (R)-3,4-dihydroxy-5-((S)- 1,2-dihydroxyethyl)furan-2(5H)-one; (R)-3,4-dihydroxy-5-((S)-1,2-dihydroxyethyl)furan-2(5H)-one; List of foods containing Vitamin C; Adenex; Allercorb; Antiscorbic Vitamin; Antiscorbutic Vitamin; Arco-Cee; Ascoltin; Ascor-B.I.D.; Ascorb; Ascorbajen; Ascorbicab; Ascorbicap; Ascorbicin; Ascorbin; Ascorbutina; Ascorin; Ascorteal; Ascorvit; C-Long; C-Quin; C-Vimin; Cantan; Cantaxin; Catavin C; Ce Lent; Cebicure; Cebion; Cebione; Cee-Caps Td; Cee-Vite; Cegiolan; Ceglion; Celaskon; Cemagyl; Cemill; Cenetone; Cenolate; Cereon; Cergona; Cescorbat; Cetamid; Cetane-Caps Tc; Cetane-Caps Td; Cetemican; Cevalin; Cevatine; Cevex; Cevi-Bid; Cevimin; Cevitamic Acid; Cevitamin; Cevitan; Cevitex; Cewin; Ciamin; Cipca; Citriscorb; Colascor; Concemin; Davitamon C; Duoscorb; Hicee; Hybrin; IDO-C; Kyselina Askorbova; Laroscorbine; Lemascorb; Liqui-Cee; Meri-C; Natrascorb; Planavit C; Proscorbin; Roscorbic; Scorbacid; Scorbu-C; Secorbate; Sodascorbate; Testascorbic; Vicelat; Vicin; Vicomin C; Viforcit; Viscorin; Vitace; Vitacee; Vitacimin; Vitacin; Vitamisin; Vitascorbol; Xitix; Ascorbic; L-ascorbate; Liposomal vitamin c; VitaminC; Animal production of vitamin C; Production of vitamin C in animals; Production of vitamin C in plants; Plant production of vitamin C; Biosynthesis of vitamin C; Vitamin C biosynthesis
Ascorbic acid is another name for vitamin C. (TECHNICAL)
N-UNCOUNT
ascorbic acid         
NUTRIENT FOUND IN CITRUS FRUITS AND OTHER FOODS
Ascorbic Acid; Hexuronic; Ascorbate; Vitamin C Overdose; Cetebe; Vitamine C; L-ascorbic acid; Vitamin C Foundation; C Vitamin; Evolution of Vitamin C; Evolution of vitamin c; Ascorbic (acid); Vitimin C; Vit c; Vitamin c; Ascorbate metabolism; ATC code G01AD03; ATCvet code QG01AD03; ATC code S01XA15; ATCvet code QS01XA15; (R)-3,4-dihydroxy-5-((S)- 1,2-dihydroxyethyl)furan-2(5H)-one; (R)-3,4-dihydroxy-5-((S)-1,2-dihydroxyethyl)furan-2(5H)-one; List of foods containing Vitamin C; Adenex; Allercorb; Antiscorbic Vitamin; Antiscorbutic Vitamin; Arco-Cee; Ascoltin; Ascor-B.I.D.; Ascorb; Ascorbajen; Ascorbicab; Ascorbicap; Ascorbicin; Ascorbin; Ascorbutina; Ascorin; Ascorteal; Ascorvit; C-Long; C-Quin; C-Vimin; Cantan; Cantaxin; Catavin C; Ce Lent; Cebicure; Cebion; Cebione; Cee-Caps Td; Cee-Vite; Cegiolan; Ceglion; Celaskon; Cemagyl; Cemill; Cenetone; Cenolate; Cereon; Cergona; Cescorbat; Cetamid; Cetane-Caps Tc; Cetane-Caps Td; Cetemican; Cevalin; Cevatine; Cevex; Cevi-Bid; Cevimin; Cevitamic Acid; Cevitamin; Cevitan; Cevitex; Cewin; Ciamin; Cipca; Citriscorb; Colascor; Concemin; Davitamon C; Duoscorb; Hicee; Hybrin; IDO-C; Kyselina Askorbova; Laroscorbine; Lemascorb; Liqui-Cee; Meri-C; Natrascorb; Planavit C; Proscorbin; Roscorbic; Scorbacid; Scorbu-C; Secorbate; Sodascorbate; Testascorbic; Vicelat; Vicin; Vicomin C; Viforcit; Viscorin; Vitace; Vitacee; Vitacimin; Vitacin; Vitamisin; Vitascorbol; Xitix; Ascorbic; L-ascorbate; Liposomal vitamin c; VitaminC; Animal production of vitamin C; Production of vitamin C in animals; Production of vitamin C in plants; Plant production of vitamin C; Biosynthesis of vitamin C; Vitamin C biosynthesis
[?'sk?:b?k]
¦ noun vitamin C, a compound found in citrus fruits and green vegetables which is essential in maintaining healthy connective tissue and of which a deficiency causes scurvy.
Origin
1930s: from a-1 + med. L. scorbutus 'scurvy' + -ic.

Wikipédia

Chemistry of ascorbic acid

Ascorbic acid is an organic compound with formula C
6
H
8
O
6
, originally called hexuronic acid. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. It is a mild reducing agent.

Ascorbic acid exists as two enantiomers (mirror-image isomers), commonly denoted "l" (for "levo") and "d" (for "dextro"). The l isomer is the one most often encountered: it occurs naturally in many foods, and is one form ("vitamer") of vitamin C, an essential nutrient for humans and many animals. Deficiency of vitamin C causes scurvy, formerly a major disease of sailors in long sea voyages. It is used as a food additive and a dietary supplement for its antioxidant properties. The "d" form can be made via chemical synthesis but has no significant biological role.

Exemples du corpus de texte pour ascorbic acid
1. As well as artichokes, they include fructose and ascorbic acid.
2. Ascorbic acid aids collagen growth – vital for plumped up skin – and retinyl palmitate increases cell turnover.
3. "Ascorbic acid – commonly known as Vitamin C – is known to increase the rate at which alcohol is metabolised by the body," he says.
4. Benzene can form in soft drinks that contain vitamin C, also called ascorbic acid, and either sodium benzoate or potassium benzoate.
5. China produces 80 percent of the world‘s ascorbic acid, also known as Vitamin C and used as a common preservative in processed foods.