2,3-Diketogulonic Acid: Metabolite of ASCORBIC ACID and the oxidized form of the lactone DEHYDROASCORBIC ACID.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Drug Information Services: Services providing pharmaceutic and therapeutic drug information and consultation.National Library of Medicine (U.S.): An agency of the NATIONAL INSTITUTES OF HEALTH concerned with overall planning, promoting, and administering programs pertaining to advancement of medical and related sciences. Major activities of this institute include the collection, dissemination, and exchange of information important to the progress of medicine and health, research in medical informatics and support for medical library development.Counterfeit Drugs: Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.Government Agencies: Administrative units of government responsible for policy making and management of governmental activities.MEDLARS: A computerized biomedical bibliographic storage and retrieval system operated by the NATIONAL LIBRARY OF MEDICINE. MEDLARS stands for Medical Literature Analysis and Retrieval System, which was first introduced in 1964 and evolved into an online system in 1971 called MEDLINE (MEDLARS Online). As other online databases were developed, MEDLARS became the name of the entire NLM information system while MEDLINE became the name of the premier database. MEDLARS was used to produce the former printed Cumulated Index Medicus, and the printed monthly Index Medicus, until that publication ceased in December 2004.Portal Vein: A short thick vein formed by union of the superior mesenteric vein and the splenic vein.Nifurtimox: A nitrofuran thiazine that has been used against TRYPANOSOMIASIS.Trypanosoma cruzi: The agent of South American trypanosomiasis or CHAGAS DISEASE. Its vertebrate hosts are man and various domestic and wild animals. Insects of several species are vectors.Trypanocidal Agents: Agents destructive to the protozoal organisms belonging to the suborder TRYPANOSOMATINA.Chagas Disease: Infection with the protozoan parasite TRYPANOSOMA CRUZI, a form of TRYPANOSOMIASIS endemic in Central and South America. It is named after the Brazilian physician Carlos Chagas, who discovered the parasite. Infection by the parasite (positive serologic result only) is distinguished from the clinical manifestations that develop years later, such as destruction of PARASYMPATHETIC GANGLIA; CHAGAS CARDIOMYOPATHY; and dysfunction of the ESOPHAGUS or COLON.Quercetin: A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin.NitrofuransNitroimidazolesDisease Transmission, Infectious: The transmission of infectious disease or pathogens. When transmission is within the same species, the mode can be horizontal or vertical (INFECTIOUS DISEASE TRANSMISSION, VERTICAL).Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Composite Resins: Synthetic resins, containing an inert filler, that are widely used in dentistry.Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Electrodes: Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.Electric Organ: In about 250 species of electric fishes, modified muscle fibers forming disklike multinucleate plates arranged in stacks like batteries in series and embedded in a gelatinous matrix. A large torpedo ray may have half a million plates. Muscles in different parts of the body may be modified, i.e., the trunk and tail in the electric eel, the hyobranchial apparatus in the electric ray, and extrinsic eye muscles in the stargazers. Powerful electric organs emit pulses in brief bursts several times a second. They serve to stun prey and ward off predators. A large torpedo ray can produce of shock of more than 200 volts, capable of stunning a human. (Storer et al., General Zoology, 6th ed, p672)Polyurethanes: A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.Gas Chromatography-Mass Spectrometry: A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.Mass Spectrometry: An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.Chromatography, Gas: Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.Ascorbic Acid: A six carbon compound related to glucose. It is found naturally in citrus fruits and many vegetables. Ascorbic acid is an essential nutrient in human diets, and necessary to maintain connective tissue and bone. Its biologically active form, vitamin C, functions as a reducing agent and coenzyme in several metabolic pathways. Vitamin C is considered an antioxidant.Chromatography, High Pressure Liquid: Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.Chromatography, Liquid: Chromatographic techniques in which the mobile phase is a liquid.Volatile Organic Compounds: Organic compounds that have a relatively high VAPOR PRESSURE at room temperature.Urease: An enzyme that catalyzes the conversion of urea and water to carbon dioxide and ammonia. EC 3.5.1.5.Dehydroascorbic Acid: The reversibly oxidized form of ascorbic acid. It is the lactone of 2,3-DIKETOGULONIC ACID and has antiscorbutic activity in man on oral ingestion.Helicobacter pylori: A spiral bacterium active as a human gastric pathogen. It is a gram-negative, urease-positive, curved or slightly spiral organism initially isolated in 1982 from patients with lesions of gastritis or peptic ulcers in Western Australia. Helicobacter pylori was originally classified in the genus CAMPYLOBACTER, but RNA sequencing, cellular fatty acid profiles, growth patterns, and other taxonomic characteristics indicate that the micro-organism should be included in the genus HELICOBACTER. It has been officially transferred to Helicobacter gen. nov. (see Int J Syst Bacteriol 1989 Oct;39(4):297-405).Helicobacter Infections: Infections with organisms of the genus HELICOBACTER, particularly, in humans, HELICOBACTER PYLORI. The clinical manifestations are focused in the stomach, usually the gastric mucosa and antrum, and the upper duodenum. This infection plays a major role in the pathogenesis of type B gastritis and peptic ulcer disease.Buffers: A chemical system that functions to control the levels of specific ions in solution. When the level of hydrogen ion in solution is controlled the system is called a pH buffer.Urea: A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.Altitude: A vertical distance measured from a known level on the surface of a planet or other celestial body.Book Reviews as Topic: Critical analyses of books or other monographic works.Oxidative Stress: A disturbance in the prooxidant-antioxidant balance in favor of the former, leading to potential damage. Indicators of oxidative stress include damaged DNA bases, protein oxidation products, and lipid peroxidation products (Sies, Oxidative Stress, 1991, pxv-xvi).Book ReviewsTibet: An autonomous region located in central Asia, within China.Altitude Sickness: Multiple symptoms associated with reduced oxygen at high ALTITUDE.Mountaineering: A sport involving mountain climbing techniques.Mythology: A body of stories, the origins of which may be unknown or forgotten, that serve to explain practices, beliefs, institutions or natural phenomena. Mythology includes legends and folk tales. It may refer to classical mythology or to a body of modern thought and modern life. (From Webster's 1st ed)Burns, ChemicalNorth CarolinaDiphtheria Toxin: An ADP-ribosylating polypeptide produced by CORYNEBACTERIUM DIPHTHERIAE that causes the signs and symptoms of DIPHTHERIA. It can be broken into two unequal domains: the smaller, catalytic A domain is the lethal moiety and contains MONO(ADP-RIBOSE) TRANSFERASES which transfers ADP RIBOSE to PEPTIDE ELONGATION FACTOR 2 thereby inhibiting protein synthesis; and the larger B domain that is needed for entry into cells.Diphtheria: A localized infection of mucous membranes or skin caused by toxigenic strains of CORYNEBACTERIUM DIPHTHERIAE. It is characterized by the presence of a pseudomembrane at the site of infection. DIPHTHERIA TOXIN, produced by C. diphtheriae, can cause myocarditis, polyneuritis, and other systemic toxic effects.Syringes: Instruments used for injecting or withdrawing fluids. (Stedman, 25th ed)
... edetic acid MeSH D02.241.081.038.455 --- egtazic acid MeSH D02.241.081.038.581 --- iodoacetic acid MeSH D02.241.081.038.581.400 ... muramic acids MeSH D02.241.081.844.562 --- neuraminic acids MeSH D02.241.081.844.562.668 --- sialic acids MeSH D02.241.081.844. ... quinic acid MeSH D02.241.511.852 --- shikimic acid MeSH D02.241.511.902 --- sugar acids MeSH D02.241.511.902.107 --- ascorbic ... muramic acids MeSH D02.241.511.902.562 --- neuraminic acids MeSH D02.241.511.902.562.668 --- sialic acids MeSH D02.241.511.902. ...
... ascorbic acid will undergo further oxidative decomposition to various products including diketogulonic acid, xylonic acid, ... a diastereomer of ascorbic acid. Mineral ascorbates: salts of ascorbic acid Acids in wine Safety (MSDS) data for ascorbic acid ... to produce ascorbic acid. L-Ascorbic acid has a negative feedback on L-galactose dehydrogenase in spinach. Ascorbic acid efflux ... The biosynthesis of ascorbic acid starts with the formation of UDP-glucuronic acid. UDP-glucuronic acid is formed when UDP- ...
Definition of 2,3-diketogulonic acid in the Definitions.net dictionary. Meaning of 2,3-diketogulonic acid. What does 2,3- ... diketogulonic acid mean? Information and translations of 2,3-diketogulonic acid in the most comprehensive dictionary ... Metabolite of ASCORBIC ACID and the oxidized form of the lactone DEHYDROASCORBIC ACID. ... Discuss these 2,3-diketogulonic acid definitions with the community:. Word of the Day. Would you like us to send you a FREE new ...
Metabolite of ASCORBIC ACID and the oxidized form of the lactone DEHYDROASCORBIC ACID. ... 2,3-Diketogulonic acid View Synonyms. View Structure. Description:. ...
ureidoglycolic acid (1R,2S,5S,6S)-2-(3-carboxypropanoyl)-5-[(1-carboxyvinyl)oxy]-6-hydroxycyclohex-3-ene-1-carboxylic acid ... Annotations: Rat: (8363) Mouse: (8225) Human: (8584) Chinchilla: (0) Bonobo: (0) Dog: (2) Squirrel: (0) Pig: (13) ... 5-(2-hydroxyethyl)-4-methylthiazole 5-[(5-phospho-1-deoxy-D-ribulos-1-ylimino)methylamino]-1-(5-phospho-beta-D-ribosyl) ... 2,3,2,3-tetrakis(3-hydroxytetradecanoyl)-alpha-D-glucosaminyl-1,6-beta-D-glucosamine 1-phosphate + ...
Dehydroascorbic acid is irreversibly oxidized to the inactive diketogulonic acid. Since this change takes place readily, ... A 0.5% aqueous solution of ascorbic acid is strongly acid, with a pH of 3. Ascorbic acid is more stable in an acidic than an ... L-ascorbic acid is the most important of several compounds that have vitamin C activity. Ascorbic acid is commercially ... The L-isomer of ascorbic acid is biologically active, while the D-isomer is not. In biological systems, L-ascorbic acid can be ...
... and cloning of TpLDH and showing that amino acid insertions or deletions most notably corresponded to a 5-amino acid sequence ( ... Background: Ascorbic acid (Asc) is one of the most abundant antioxidants and it serves as a major contributor to protect plants ... To the control and sham groups, 2 mL of 0.9% NaCl was administred rectally, and in the argan oil group, 2 mL/day argan oil was ... In the control (Group 2) and argan oil (Group 3) groups, colonic resection and anastomosis were applied. ...
In certain fruits and developmental conditions, an alternative pathway from D-galacturonic acid might be also relevant. We here ... a number of animals including humans have lost the ability to synthesize ascorbic acid (ascorbate, vitamin C), an essential ... a number of animals including humans have lost the ability to synthesize ascorbic acid (ascorbate, vitamin C), an essential ... the main degradation products are oxalic acid, threonic acid and oxalyl threonic acid, but no tartaric acid has been detected ( ...
... edetic acid MeSH D02.241.081.038.455 --- egtazic acid MeSH D02.241.081.038.581 --- iodoacetic acid MeSH D02.241.081.038.581.400 ... muramic acids MeSH D02.241.081.844.562 --- neuraminic acids MeSH D02.241.081.844.562.668 --- sialic acids MeSH D02.241.081.844. ... quinic acid MeSH D02.241.511.852 --- shikimic acid MeSH D02.241.511.902 --- sugar acids MeSH D02.241.511.902.107 --- ascorbic ... muramic acids MeSH D02.241.511.902.562 --- neuraminic acids MeSH D02.241.511.902.562.668 --- sialic acids MeSH D02.241.511.902. ...
2006) Use of the affinity/HPLC method for quantitative estimation of folic acid in enriched cereal-grain products. J Nutr 136: ... 2000) Metabolic engineering of an alternative pathway for ascorbic acid biosynthesis in plants. Mol Breeding 6:73-78. ... 2006) Progress in manipulating ascorbic acid biosynthesis and accumulation in plants. Physiol Plant 126:343-355. ... A Single Amino Acid Substitution in an ORANGE Protein Promotes Carotenoid Overaccumulation in Arabidopsis ...
Acyclic Acids are Carboxylic acids, a 2 carbon straight-chain saturated carboxylic acid, that has an open-chain molecular ... Acyclic Acids (Ethanoic Acids). "Acyclic Acids (Ethanoic Acids)" Acyclic Acid. In organic chemistry, Acyclic Acids (Ethanoic ... Uronic Acids *Glucuronates *Glucuronic Acid *Glucuronides *Hexuronic Acids *Iduronic Acid *Tricarboxylic Acids *Aconitic Acid * ... "Imino Acids (Secondary Amino Acids)" Secondary Amino Acids. In protein science, an Imino Acid (Secondary Amino Acid) is a ...
Background: Ascorbic acid (Asc) is one of the most abundant antioxidants and it serves as a major contributor to protect plants ... Valproic acid (VPA), an anti-epileptic drug, has been reported to cause male sub/infertility. Together with searching for ... SUMMARY: Retinoic acid, an active metabolite of vitamin A, plays essential signaling roles in mammalian embryogenesis. Prenatal ... Further, antioxidants, as well as alpha lipoic acid (ALA), may be a response to this pathological condition. The present study ...
Mitochondrial recycling of ascorbic acid from dehydroascorbic acid: dependence on the electron transport chain. Arch Biochem ... Characterization of ascorbic acid transport by adrenomedullary chromaffin cells. Evidence for Na+-dependent co-transport. J ... Pharmacologic ascorbic acid concentrations selectively kill cancer cells: action as a pro-drug to deliver hydrogen peroxide to ... Elimination of ascorbic acid after high-dose infusion in prostate cancer patients: a pharmacokinetic evaluation. Basic Clin ...
Background: Ascorbic acid (Asc) is one of the most abundant antioxidants and it serves as a major contributor to protect plants ... Oxidoreductases/metabolism , Ascorbic Acid/administration & dosage , Tobacco/enzymology , Plants, Genetically Modified/ ... Ascorbic Acid/metabolism , Stress, Physiological , Tobacco/drug effects , Blotting, Western , Plants, Genetically Modified/drug ... We first found that the miR-17-5p and miR-20a of miR-17-92 directly target the 3UTR of FOG-2 and post-transcriptionally ...
As most of you may know, vitamin C in the form of ascorbic acid oxidises easily to dehydroascorbic acid, which has an orange- ... I mix this in the AM with their ferulic acid/resveratrol serum and a drop of hyaluronic acid… ... Ascorbic acid is by far the most unstable form of vitamin C and oxidises very easily. While the other forms of vitamin C arent ... In the meantime, I have a jar of The Ordinary L-Ascorbic Acid Powder, and have been mixing it with Hada Labo Premium on a daily ...
VC: Vitamin c; L-AA: L-ascorbic acid; DHA: L-dehydroascorbic acid; GLO: l-Gulonolactone Oxidase Gene; LDL: Low Density ... Kyrtopoulos SA (1987) Ascorbic acid and the formation of N-nitroso compounds: possible role of ascorbic acid in cancer ... A study in USA stated that after supplementation with VC there was a decrease of 45% in level of uric acid with intake of 1500 ... Ohno S, Ohno Y, Suzuki N, Soma G, Inoue, M (2009) High-dose vitamin C (ascorbic acid) therapy in the treatment of patients with ...
dehydroascorbic acid, etc ; ascorbic acid; chemical reactions; chemical bonding; glucobrassicin; cresols; coumaric acids; ... organic acids, ascorbic acid (AA), dehydroascorbic acid, and 2,3-diketogulonic acid were used to estimate the extent of NEB ... You searched for: Subject dehydroascorbic acid Remove constraint Subject: dehydroascorbic acid Text Availability Full Text ... dehydroascorbic acid, etc ; Nicotiana tabacum; cell suspension culture; cell cycle; ascorbic acid; oxidation; redox potential; ...
... organic acids, ascorbic acid (AA), dehydroascorbic acid, and 2,3-diketogulonic acid were used to estimate the extent of NEB ... Branched-chain amino acids (BCAAs; valine, leucine, and isoleucine) are essential amino acids with protein anabolic properties ... maple syrup urine disease, etc ; amino acid composition; amino acid metabolism; case studies; cesarean section; compliance; ... rice syrup, etc ; Lactobacillus plantarum; beverages; cell viability; fermentation; lactic acid; lactic acid bacteria; ...
The ions represent dehydroascorbate (345), diketogu-lonic acid (415) and the proposed dicarboxylic acid species (505) Exposure ... diketogulonic acids and the C6 -dicarboxylic acid species. As shown in FIG. 4A, the relative amount of DHA (345 to 575 ratio) ... the diketogulonic acid and ketotrihydroxyadipic acid isomers illustrated herein, is a sensitive indicator of redox potential ... These are consistent with diketogulonic acid (triangles) and dicarboxylic acid (diamond).. DETAILED DESCRIPTION OF THE ...
... and reductic acid, which are decomposition products of L-ascorbic acid or D-araboascorbic acid. 16. A manufacturing method of ... 0059] The reason is in a feature of decomposition products of L-ascorbic acid. L-ascorbic acid is decomposed in order of ... For example, the reducing agent may include at least one of L-ascorbic acid, D-araboascorbic acid, the acetaldehyde 2,4-dinitro ... 0060] L-ascorbic acid, which is starting material, and reductic acid, which is a decomposition product, have keto-enediol ...
... ascorbic acid, dehydroascorbic acid, diketogulonic acid and furfural (Anon., 1965). In the reaction products resulting from ... The following substances were investigated in this respect; tricarbethoxy gallic acid, dicarbethoxy chlorogenic acid, mono- and ... hydroxy acids, ascorbic acid and ethanol. The predominant reaction, however, remains the normal hydrolysis to CO2 and ethanol. ... The reaction may also theoretically occur at acid pH where NH4+/NH3 equilibria exists. Model experiments using high levels of ...
12-S-Hydroxyeicosatetraenoic Acid use 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid ... acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester ... 3-Keto-5-alpha-Steroid delta-4-Dehydrogenase use Testosterone 5-alpha-Reductase ... 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer ...
... sugar acid derivatives of organic compounds containing a saccharide unit that bears both an amine group and a carboxylic acid ... Sugar Amino Acids and derivatives are sugar acids and ... Sugar Amino Acids and derivatives "Sugar Amino Acids and ... In organic chemistry, Sugar Amino Acids and derivatives are sugar acids and sugar acid derivatives of organic compounds in the ... Sugar Amino Acids and derivatives ⌊Alchemy Center. ⌊Atoms. ⌊Polyatomic entities. ⌊Heteroatomic Molecular Entities. ⌊Organic ...
Dehydroascorbic and Diketogulonic Acids. Methods of Biochemical Analysis, Vol 1:115 (1954) ed. By D. Glick, Interscience ... Limitations: Reducing agents such as ascorbic acid, uric acid, glutathione and gentisic acid may cause false negative results. ... Ascorbic Acid. • Expected values: Ascorbic acid is found in various food supplies and dietary supplements. Concentrations of ... Sensitivity: 17 mg/dL ascorbic acid in urine. • Performance Characteristics: The oxidized form, dehydroascorbic acid, does not ...
VOLUME NUMBER 2 JUNE % 958 Published by the Division of Food Preservation and Transport Commonwealth Scientific and Industrial ... diketogulonic acid). At high ph further degradation occurs. In the absence of oxygen ascorbic acid undergoes a slow anaerobic ... Prelab 6: Carboxylic Acids The Structure of Carboxylic Acids Prelab 6: Carboxylic Acids Carboxylic acids contain a carboxyl ... Carboxylic Acids, Esters and Acyl Chlorides R hemistry A 432 arboxylic Acids, Esters and Acyl hlorides arboxylic Acids, Esters ...
Examples of sugar acids include aldonic acids, uronic acids and aldonic acids. More specifically, sorbitol, gluconic acid, ... D-araboascorbic acid (erythorbic acid), which shows vitamin C activity, L-araboascorbic acid, and D-xyloascorbic acid. ... gluconic acid and other AsA intermediates, succinic acid, citric acid, lactic acid. ... dehydroascorbic acid, erythorbic acid and mannonic acid. In some preferred embodiments the carbon substrate is a hexose or a ...
acid with redox properties. As an acid it shows strength. comparable with the lower monocarboxylic acids, its pKa. for ... ascorbic acid itself. The effect of cysteine will be to reduce the dehydro-ascorbic acid to the inert ascorbic acid, a ... acid, namely, the diketone (dehydro-ascorbic acid) and not to the ascorbic acid itself. The disappearance of the inhibition on ... 1. it was not AA itself but the acidic conditions created by the acid.AA is a relatively strong acid (pKa1=4.1),easily lowering ...
  • One ascorbate metabolite is 2,3-diketogulonate (DKG), preparations of which can non-enzymically generate H2O2 and delay peroxidase action on aromatic substrates. (usda.gov)
  • Stabilization of ascorbic acid in human plasma, and its liquid-chromatographic measurement. (semanticscholar.org)
  • article{Margolis1988StabilizationOA, title={Stabilization of ascorbic acid in human plasma, and its liquid-chromatographic measurement. (semanticscholar.org)
  • We describe two independent HPLC procedures for the rapid, accurate analysis for ascorbic acid in human plasma. (semanticscholar.org)
  • To understand the chemical behavior of ascorbic acid in human pathology, one must go beyond its present academic status either as a factor essential for life or as a substance necessary to prevent scurvy. (angelfire.com)
  • The primary enzymatic role of ascorbic acid in metabolism is that of a reducing agent for hydroxylation reactions (Sauberlich, 1990). (dsm.com)
  • Of the five strains of lactic acid bacteria tested, L. plantarum was preferentially selected in terms of a viable cells (7.3 × 10⁸ colony forming unit (CFU/mL) and higher dry cell weight (13 mg/mL). (usda.gov)
  • These results indicate that the miR-17-92 cluster regulates the expression of FOG-2 protein and suggest that the miR-17-92 cluster might play an important role in heart development. (bvsalud.org)
  • In plasma, uric acid and ascorbic acid together contribute around 80% of the total antioxidant activity, which is around 1000 ОјM, the rest being largely vitamin E, bilirubin, and protein. (annualfarewelltour.com)
  • The net loss of body protein particularly skeletal muscle protein is likely to be a major factor responsible for PEM [ 1 , 2 ]. (hindawi.com)
  • The phenolic contents of plant foods are commonly quantified by the Folin-Ciocalteu assay based on gallic acid equivalents (GAEs). (usda.gov)
  • However, this may lead to inaccuracies because gallic acid is not always representative of the structural heterogeneity of plant phenolics. (usda.gov)
  • Ascorbic acid is one form ("vitamer") of vitamin C. It was originally called L-hexuronic acid, but, when it was found to have vitamin C activity in animals ("vitamin C" being defined as a vitamin activity, not then a specific substance), the suggestion was made to rename it. (wikipedia.org)
  • Szent-Györgyi isolated the chemical hexuronic acid first from plants and later from animal adrenal glands. (wikipedia.org)
  • In late 1931, King's lab obtained adrenal hexuronic acid indirectly from Szent-Györgyi and, using their animal model, proved that it is vitamin C, by early 1932. (wikipedia.org)
  • This was the last of the compound from animal sources, but, later that year, Szent-Györgyi's group discovered that paprika pepper, a common spice in the Hungarian diet, is a rich source of hexuronic acid. (wikipedia.org)
  • Vitamin C occurs in two forms, L-ascorbic acid (reduced form) and dehydro-L-ascorbic acid (oxidized form). (dsm.com)
  • 1984). High levels of dietary iron, zinc, copper and pectin reduce the utilization of ascorbic acid, either by direct oxidation of vitamin C or by reducing its absorption (Sauberlich, 1990). (dsm.com)
  • A second important feature of vitamin C metabolism is the interconversion of L-ascorbic acid and dehydro-L-ascorbic acid. (dsm.com)
  • 1997). Based on radioisotope measurements of ascorbic acid kinetics, the lungs appear to be a smaller but rapidly mobilized vitamin C pool, while the liver and muscle are larger, more slowly mobilized reserves (Toutain et al. (dsm.com)
  • When vitamin C intake far exceeds requirements, ascorbic acid is excreted in urine unchanged (Sauberlich, 1990). (dsm.com)
  • reported that vitamin C selectively kills KRAS and BRAF mutant colorectal cancer cells by targeting glyceraldehyde 3-phosphate dehydrogenase (GAPDH) through an ROS-dependent mechanism. (aimsci.com)
  • But recently, I came across a diagram in a peer-reviewed paper on a completely different topic that accidentally told me exactly why vitamin C does this: ascorbic acid eventually oxidises to erythrulose ! (labmuffin.com)
  • So that's why vitamin C serums can stain - the ascorbic acid essentially turn into fake tan on your skin! (labmuffin.com)
  • You can use an antioxidant-rich formulation like vitamin C + vitamin E + ferulic acid (e.g. (labmuffin.com)
  • Ascorbic acid is by far the most unstable form of vitamin C and oxidises very easily. (labmuffin.com)
  • Vitamin B, (pyridoxin) is 2-methyl-3-hydroxy-4, 5-di (hydroxymethy1)- pyridine. (healthdocbox.com)
  • 2] Several clinical studies have shown that high H. pylori infection rate is related to low ascorbic acid (AA)/Vitamin C (Vit C) level in serum as well as in gastric juice. (nutriforce.cn)
  • Lymphocyte and plasma vitamin C levels in type 2 diabetic patients with and without diabetes complications. (semanticscholar.org)
  • Vitamin C in plasma: a comparative study of the vitamin stabilized with trichloroacetic acid or metaphosphoric acid and the effects of storage at -70 degrees, -20 degrees, 4 degrees, and 25 degrees on the stabilized vitamin. (semanticscholar.org)
  • AOAC(1990a) Vitamin C (ascorbic acid) in vitamin preparations and juices. (springer.com)
  • AOAC (1990i) Vitamin C (ascorbic acid) in vitamin preparations. (springer.com)
  • The new name, ascorbic acid, is derived from a- (meaning "no") and scorbutus (scurvy), the disease caused by a deficiency of vitamin C. Because it is derived from glucose, many animals are able to produce it, but humans require it as part of their nutrition. (wikipedia.org)
  • Other vertebrates which lack the ability to produce ascorbic acid include some primates, guinea pigs, teleost fishes, bats, and some birds, all of which require it as a dietary micronutrient (that is, in vitamin form). (wikipedia.org)
  • High-dose vitamin D(3) during intensive-phase antimicrobial treatment of pulmonary tuberculosis: a double-blind randomised controlled trial. (wha-www.org)
  • 146 patients were allocated to receive 2 5 mg vitamin D(3) or placebo at baseline and 14, 28, and 42 days after starting standard tuberculosis treatment. (wha-www.org)
  • Patients were genotyped for TaqI and FokI polymorphisms of the vitamin D receptor, and interaction analyses were done to assess the influence of the vitamin D receptor genotype on response to vitamin D(3). (wha-www.org)
  • Mean serum 25-hydroxyvitamin D concentration at 56 days was 101 4 nmol/L in the intervention group and 22 8 nmol/L in the placebo group.Interpretation: Administration of four doses of 2 5 mg vitamin D(3) increased serum 25-hydroxyvitamin D concentrations in patients receiving intensive-phase treatment for pulmonary tuberculosis. (wha-www.org)
  • 2 Source: the National Library of Medicine's Hazardous Substance Database , 02/28/2017. (nih.gov)
  • 0.005) decrease in enzymes activities (Superoxide dismutase, catalase and ascorbic acid) along with increased lipid peroxidation level as well as cytokine parameters (tumour necrosis factor-α, interlukin-6) and biochemical parameters in plasma of infected group as compared to control group. (ijpsr.com)
  • However, a repeat of model studies using gas chromatography and levels of 340-680 ppm NH 4+ /NH 3 and 800-1600 ppm DEPC from pH 4 to 10 showed urethane to be present, with a 5-12% (22-53 ppm) conversion to urethane at pH 4 (Gejvall & L froth, 1971). (inchem.org)
  • Specifically, 1.3 ppm of urethane was reported in beer with an ammonium content of 2 ppm, when treated with 500 ppm of the labelled DEPC (L froth & Gejvall, 1971). (inchem.org)
  • Volume 2: A Review of the Literature Published Between 1970 and 1971. (nih.gov)
  • 2. The composite material according to claim 1, wherein the reducing agent includes, carbon, and a concentration of the reducing agent is defined such that a concentration of the carbon is equal to or greater than 1 mass % of a total mass of the composite material. (patentsencyclopedia.com)
  • In the absence of oxygen ascorbic acid undergoes a slow anaerobic decomposition to carbon dioxide and residual products which have not been ft11ly identified. (healthdocbox.com)
  • High specific gravity, acidic pH values and gentisic acid may inhibit color formation. (alcalalabs.com)
  • This experiment was carried out in buffered condition at pH 7.4, but in vivo H. pylori have to counter unbuffered acidic pH (pH 3) to colonize successfully into the stomach. (nutriforce.cn)
  • Maximum concentration of these compounds have been isolated and identified in urine, whereas the average faecal excretion of VC or its metabolites was observed to be about 3% when administered orally in physiological amounts . (medcraveonline.com)
  • We created elite inbred South African transgenic corn plants in which the levels of 3 vitamins were increased specifically in the endosperm through the simultaneous modification of 3 separate metabolic pathways. (pnas.org)
  • These 3 vitamins represent 3 entirely different metabolic pathways, and the only way to achieve such a radical change in the nutritional properties of an elite breeding variety of corn so rapidly is to take advantage of multigene engineering via direct DNA transfer ( 9 ). (pnas.org)
  • Concentration of VC in blood cells is much higher than in plasma, i.e. 3-4 times higher in red blood cells and 20-30 times higher in white blood cells. (medcraveonline.com)
  • 3 COn the other hand high dose of Vit C have been shown to inhibit H. pylori growth, colonization or even eradication of H. pylori infection in few studies while others gave nonconclusive results. (nutriforce.cn)
  • Recent data suggest that because of ESBLs and high-level amp C β -lactamase resistances, use of third-generation cephalosporins may be ineffective in many patients with nosocomial infections 2 . (ijpsr.com)
  • From 1967 on, Nobel prize winner Linus Pauling recommended high doses of ascorbic acid as a prevention against cold and cancer. (wikipedia.org)
  • Acetoacetic Acid concentrations of up to 200 mg/dL did not interfere with glucose assay test results (no false negative results). (alcalalabs.com)