Ascorbic acid

Ascorbic acid (vitamin C) is a water-soluble vitamin, chemically named L-(+) -sualose type 2,3,4,5, 6-pentahydroxy-2-hexenoide-4-lactone, also known as L-ascorbic acid, molecular formula C6H8O6, molecular weight 176.12.
Ascorbic acid (vitamin C) is usually flaky, sometimes needle-like monoclinic crystal, odorless, sour, soluble in water, with strong reducibility. Participate in the complex metabolic process of the body, can promote growth and enhance resistance to disease, can be used as a nutritional supplement, antioxidant, can also be used as a wheat flour improver. However, excessive supplementation of vitamin C is not good for health, but harmful, so it needs reasonable use. Vitamin C is used as an analytical reagent in the laboratory, such as a reducing agent, masking agent, etc.

Vitamin C is a white powder with a molecular weight of 176.12, usually in the form of flaky, sometimes needle-like monoclinic crystals. Odorless, sour taste, soluble in water, slightly soluble in ethanol, insoluble in ether, chloroform, petroleum ether and other organic solvents. Structurally, vitamin C is very similar to sugar, with two asymmetric carbon atoms (C4, C5) in the molecule, which can form four optical isomers.

L-ascorbic acid is a potent reducing agent and antioxidant.
Vitamin C participates in many reactions in the body. First, it promotes collagen synthesis; Second, participate in cholesterol transformation; Third, participate in the metabolism of aromatic amino acids; Fourth, it participates in the REDOX reaction in the body and plays an important role in biological oxidation and reduction as well as cellular respiration. At the tissue level, the main role of vitamin C is related to the synthesis of the intercellular substance. Including collagen, the matrix of teeth and bone, and the junction between capillary endothelial cells. Therefore, when vitamin C deficiency caused by scurvy, accompanied by collagen synthesis defects, manifested as trauma difficult to heal, tooth formation disorders and capillary damage caused by a large number of blood stasis points, blood stasis points fusion to form ecchymosis.

Peb muaj ntau lub Hoobkas zoo nrog kev koom tes sib sib zog nqus, uas tuaj yeem muab koj cov khoom zoo thiab cov nqi sib tw. Thiab peb tseem tuaj yeem muab cov luv nqi rau kev yuav khoom ntau.Thiab peb koom tes nrog ntau lub tuam txhab xa khoom xa tuaj, tuaj yeem xa cov khoom lag luam kom nyab xeeb thiab ntseeg nkaws rau koj txhais tes. Lub sij hawm xa tuaj yog li 3-20 hnub tom qab tau txais kev pom zoo ntawm kev them nyiaj.

antioxidant
Much of the biological function of vitamin C is determined by its unique structure. The molecular formula of vitamin C is C6H8O6, and there are two active hydroxyl groups on the structure of the lactone ring, which are easily ionized (pKa is 11.6 and 4.2, respectively), resulting in ASC and DHA, and DHA can be reduced to ASC in a series of enzymatic reactions. Thus, ASC becomes a natural antioxidant, and the reaction mediated by glutathione (GSH) dependent on DHA reductase is most representative of the above-mentioned reactions.
A large number of reactive oxygen species can be produced during mitochondrial oxidative phosphorylation and bacterial and virus-induced inflammatory reactions. Many proteins and enzymes require sulfhydryl (-SH) to perform their physiological functions, but the sulfhydryl group is susceptible to oxidation by oxidizing free radicals. If reactive oxygen species cannot be removed as soon as possible, DNA oxidation, lipid peroxidation, and amino acid oxidation can occur. Protecting the sulfhydryl group on the red blood cell membrane can prevent hemolysis, protect hemoglobin from oxidation to methemoglobin, etc. In addition, vitamin C can work synergistically with vitamin E to remove hydrophobic oxidation free radicals in time; Electron transfer mediated by reduction reaction can also effectively maintain the balance of REDOX environment, which is very important for maintaining cell integrity and normal physiological activities of cells.

1. Koj puas yog lub Hoobkas lossis tuam txhab lag luam?
Peb yog ib qho kev sib koom ua ke kev lag luam thiab kev lag luam, muab kev pabcuam ib-nres.OEM tuaj yeem txais.

2. Koj puas muab cov qauv? Puas yog dawb lossis ntxiv?
Cov qauv dawb.Cov qauv tus nqi thauj khoom yuav tsum tau them los ntawm koj sab.

3. Koj puas muaj daim ntawv pov thawj ntsig txog kev tswj xyuas zoo?
ISO 9001: 2008 ntawv pov thawj los xyuas kom meej qhov zoo.

4. Kuv yuav muab dab tsi kom tau txais cov lus hais?
Pls qhia peb txog cov khoom lag luam uas koj xav tau, xaj kom muaj nuj nqis, chaw nyob thiab cov kev xav tau tshwj xeeb.Cov lus hais yuav ua rau koj siv sijhawm.

5. Hom kev them nqi twg koj nyiam? Cov nqe lus twg raug lees txais?
Txais Cov Lus Cog Tseg: FOB, CFR, CIF, EXW;
Txais Nyiaj Them Nqi: USD;
Hom Kev Them Nyiaj: T / T, Western Union; Paypal, Trade Assurance.
Lus Hais: Lus Askiv.