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.

हमारे पास गहरे सहयोग के साथ कई उच्च गुणवत्ता वाले कारखाने हैं, जो आपको उच्च गुणवत्ता वाले उत्पाद और प्रतिस्पर्धी मूल्य प्रदान कर सकते हैं। और हम थोक खरीद के लिए छूट भी दे सकते हैं। और हम कई पेशेवर माल अग्रेषण कंपनियों के साथ सहयोग करते हैं, आपके हाथों में सुरक्षित और सुचारू रूप से उत्पाद वितरित कर सकते हैं। भुगतान की पुष्टि के बाद डिलीवरी का समय लगभग 3-20 दिन है।

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. क्या आप एक फैक्ट्री या ट्रेडिंग कंपनी हैं?
हम उद्योग और व्यापार को एकीकृत करने वाली एक कंपनी हैं, जो वन-स्टॉप सेवा प्रदान करती है। OEM स्वीकार किया जा सकता है।

2. क्या आप नमूने उपलब्ध कराते हैं? क्या यह मुफ़्त है या अतिरिक्त?
नि: शुल्क नमूने। नमूना के माल ढुलाई शुल्क का भुगतान आपके पक्ष द्वारा किया जाना चाहिए।

3. क्या आपके पास गुणवत्ता नियंत्रण से संबंधित कोई प्रमाणपत्र है?
गुणवत्ता सुनिश्चित करने के लिए आईएसओ 9001:2008 प्रमाणन।

4. कोटेशन प्राप्त करने के लिए मुझे क्या प्रदान करना होगा?
कृपया हमें उस उत्पाद प्रकार के बारे में सूचित करें जिसकी आपको आवश्यकता है, ऑर्डर मात्रा, पता और विशिष्ट आवश्यकताएं। आपके संदर्भ के लिए समय पर उद्धरण दिया जाएगा।

5. आप किस तरह की भुगतान विधि पसंद करते हैं? किस तरह की शर्तें स्वीकार की जाती हैं?
स्वीकृत डिलिवरी शर्तें: एफओबी, सीएफआर, सीआईएफ, ईएक्सडब्ल्यू;
स्वीकृत भुगतान मुद्रा:यूएसडी;
स्वीकृत भुगतान प्रकार: टी/टी, वेस्टर्न यूनियन; पेपैल, व्यापार आश्वासन।
बोली जाने वाली भाषा: अंग्रेजी.