I-Vitamin C (i-Ascorbic Acid) I-Cas: 50-81-7
| Inombolo Yekhathalogu | XD91869 |
| Igama lemveliso | Ivithamin C (Ascorbic Acid) |
| CAS | 50-81-7 |
| Ifomu yemolekyulila | C6H8O6 |
| Ubunzima beMolekyuli | 176.12 |
| Iinkcukacha zokuGcina | 5-30°C |
| IKhowudi yoMrhumo eHarmonized | 29362700 |
Ukucaciswa kweMveliso
| Imbonakalo | Umgubo omhlophe |
| uAsay | 99% imizuzu |
| Indawo yokunyibilika | 190-194 °C (ngoDisemba) |
| alpha | 20.5 º (c=10,H2O) |
| Indawo yokubilisa | 227.71°C (uqikelelo olurhabaxa) |
| ukuxinana | 1,65 g/cm3 |
| isalathiso se-refractive | 21 ° (C=10, H2O) |
| ukunyibilika | H2O: 50 mg/mL kwi-20 °C, ecacileyo, phantse engenambala |
| pka | 4.04, 11.7(nge-25℃) |
| PH | 1.0 - 2.5 (25℃, 176g/L emanzini) |
| PH Uluhlu | 1 - 2.5 |
| Ivumba | Ayinavumba |
| umsebenzi wamehlo | [α]25/D 19.0 ukuya ku-23.0 °, c = 10% kwi-H2O |
| Ukunyibilika kwamanzi | 333 g/L (20 ºC) |
| Uzinzo | Izinzile.Isenokuba buthathaka ukukhanya okanye umoya.Ayihambelani ne-oxidizing agents, i-alkali, isinyithi, ubhedu. |
Isiqalo sokwenziwa kwe-vitamin C kukukhetha i-oxidation ye-sugar compound D-sorbit ukuya kwi-L-sorbose usebenzisa i-Acetobacter suboxidans bacteria.I-L-sorbose iguqulwa ibe yi-L-ascorbic acid, eyaziwa ngokuba yi-vitamin C.
I-sodium, i-potassium, kunye ne-calcium iityuwa ze-ascorbic acid zibizwa ngokuba yi-ascorbates kwaye zisetyenziswa njengezigcini zokutya.Ukwenza i-ascorbic acid e-fat-soluble, inokuthi i-esterified.I-Esters ye-ascorbic acid kunye ne-acids, ezifana ne-palmitic acid ukwenza i-ascorbyl palmitate kunye ne-stearic acid ukwenza i-ascorbic stearate, isetyenziswa njenge-antioxidants ekutyeni, kumayeza, nakwizinto zokuthambisa.I-ascorbic acid nayo ibalulekile kwimetabolism yezinye ii-amino acids.Inceda ukukhusela iiseli kumonakalo omkhulu wamahhala, inceda ukufunxa intsimbi, kwaye iyimfuneko kwiinkqubo ezininzi ze-metabolic.
I-Vitamin C yi-anti-oxidant eyaziwayo.Impembelelo yayo kwi-free-radical formation xa isetyenziswe ngokusemgangathweni kwesikhumba ngokusebenzisa ukhilimu ayizange isungulwe ngokucacileyo.Ukusebenza kwezicelo ezisematheni kuye kwathandatyuzwa ngenxa yokungazinzi kwevithamin C (isabelana namanzi kwaye ithobeke).Ezinye iifom kuthiwa zinozinzo olungcono kwiinkqubo zamanzi.I-Synthetic analogues ezifana ne-magnesium ascorbyl phosphate ziphakathi kwezo zibonwa zisebenza ngakumbi, njengoko zihlala zizinzile.Xa uvavanya amandla ayo okulwa nomonakalo owenziwe nge-free-radical ekukhanyeni kwe-synergistic effect kunye ne-vitamin E, i-vitamin C iyakhanya.Njengoko i-vitamin e isabela nge-radical yamahhala, yona, yonakaliswa yi-radical yamahhala elwa nayo.I-Vitamin C ingena ukulungisa umonakalo wamahhala kwi-vitamin E, evumela ukuba i-e iqhubeke nemisebenzi yayo yokukhupha i-free-radical.Uphando lwangaphambili lubonise ukuba ugxininiso oluphezulu lwevithamin C esetyenzisiweyo kwi-photoprotective, kwaye ngokucacileyo ukulungiswa kwevithamin esetyenziswe kolu phando kuxhathisa isepha kunye namanzi, ukuhlamba, okanye ukuhlikihla iintsuku ezintathu.Uphando olungakumbi lwangoku lubonise ukuba i-vitamin C iyongeza ukhuseleko kumonakalo we-UVB xa idibene neekhemikhali ze-sunscreen ze-UVB.Oku bekuya kukhokelela ekubeni ubani agqibe kwelokuba xa edityaniswa nezinto eziqhelekileyo zokuzikhusela elangeni, ivithamin C inokuvumela ukhuseleko oluhlala ixesha elide nolubanzi elangeni.Kwakhona, intsebenziswano phakathi kwevithamini C kunye ne-e inokuvelisa iziphumo ezingcono, njengoko ngokucacileyo indibaniselwano yazo zombini ibonelela ngokhuseleko olululo kumonakalo we-UVB.Nangona kunjalo, i-vitamin C ibonakala ingcono kakhulu kune-e ekukhuseleni umonakalo we-UVA.Esinye isiphelo sesokuba indibaniselwano yevithamin C, e, kunye ne-sunscreen inika ukhuseleko olukhulu kunesimbuku sokhuseleko olunikwa nasiphi na kwezithathu izithako ezisebenza zodwa.I-Vitamin C iphinda isebenze njengomlawuli we-collagen biosynthesis.Kuyaziwa ukulawula izinto ze-intercellular colloidal ezifana ne-collagen, kwaye xa ziqulunqwe kwizithuthi ezifanelekileyo, zinokuba nefuthe lokukhanya kwesikhumba.Ivithamin C kuthiwa iyakwazi ukunceda umzimba ukuba womelele ngokuchasene neemeko ezosulelayo ngokomeleza amajoni omzimba.Kukho ubungqina (nangona kuxoxwe ngayo) ukuba ivithamin C inokudlula kuluhlu lwesikhumba kwaye ikhuthaze ukuphilisa kwiithishu ezonakaliswe kukutsha okanye ukulimala.Ifumaneka, ke ngoko, kwii-ointments ezitshisayo kunye neekhrimu ezisetyenziselwa ukuqhawuka.I-Vitamin C iphinde idume kwiimveliso ezichasene nokuguga.Uphononongo lwangoku lubonisa iipropati ezinokuthi zichase ukudumba ngokunjalo.
I-antioxidant ye-Physiological.I-Coenzyme kwinani leempendulo ze-hydroxylation;efunekayo kwi-collagen synthesis.Isasazwa ngokubanzi kwizityalo nakwizilwanyana.Ukungangeni ngokwaneleyo kubangela ukunqongophala kwe-syndromes efana nescurvy.Isetyenziswa njenge-antimicrobial kunye ne-antioxidant ekutyeni.
