Ithebhulethi Ekwaziwa Kakhulu Ye-Vitamin C Yokuthuthukisa Ukuzivikela Komuntu
Incazelo Yomkhiqizo
| Umkhiqizo | Ivithamini C |
| I-CAS | 50-81-7 |
| Ukubukeka | I-crystal emhlophe noma i-crystalline powder emhlophe |
| Ukuncibilika | Incibilika emanzini, incibilika kancane ku-ethanol, ayincibiliki ku-ether, benzene, igrisi, njll. |
I-Vitamin C (Vitamin C), i-ascorbic acid (Ascorbic acid), ifomula yamangqamuzana i-C6H8O6, iyinhlanganisela ye-polyhydroxyl equkethe ama-athomu e-carbon ayi-6, ivithamini encibilikayo emanzini edingekayo ukuze kugcinwe ukusebenza okujwayelekile komzimba kanye ne-metabolic engavamile. ukusabela kwamaseli.Ukubonakala kukavithamini C omsulwa kuyikristalu emhlophe noma i-crystalline powder, encibilika kalula emanzini, encibilika kancane ku-ethanol, engancibiliki ku-ether, benzene, amafutha, njll. i-hydroxylation, i-antioxidant, ithuthukisa amasosha omzimba kanye nemiphumela yokuqeda ubuthi emzimbeni womuntu.Imboni ikakhulukazi nge-biosynthesis (ukuvutshelwa) indlela yokulungisa uvithamini C, uvithamini C usetshenziswa kakhulu emkhakheni wezokwelapha kanye nokudla.
| Izakhiwo zomzimba namakhemikhali | 1. Ukubukeka: ikristalu emhlophe noma i-crystalline powder. 2. Ukunyibilika: kuncibilika kalula emanzini, kuncibilika kancane ku-ethanol, okungancibiliki ku-ether, benzene, amafutha, njll. 3. Umsebenzi we-Optical: I-Vitamin C inama-isomers optical angu-4, futhi ukujikeleza okuqondile kwesisombululo samanzi esiqukethe i-L-ascorbic acid engu-0.10 g/ml ngu-+20.5 °-+21.5 °. 4. I-Acid: I-Vitamin C ine-enediol base, ene-acidic, ngokuvamile ibonakala njenge-asidi elula engasabela nge-sodium bicarbonate ukukhiqiza usawoti we-sodium. 5. Izakhiwo ze-Carbohydrate: Isakhiwo samakhemikhali se-vitamin C sifana nesoshukela, nezakhiwo zikashukela, ezingase zifakwe i-hydrolyzed futhi i-decarboxylated ukukhiqiza i-pentose lapho ikhona , futhi iqhubeke ilahlekelwa amanzi ukuze ikhiqize, ingeza i-pyrrole nokushisa I-50 ºC izokhiqiza okuluhlaza okwesibhakabhaka. 6. Izici zokumuncwa kwe-Ultraviolet: Ngenxa yokuba khona kwama-conjugated double bond kuma-molecule kavithamini C, isixazululo sawo esincibilikisiwe sinokumunca okuphezulu ku-243 nm wavelength, futhi ubude begagasi obuphezulu bokumuncwa buzoshintshwa bube ku-265 nm ngaphansi kwezimo ezine-asidi noma ze-alkali. 7. I-Reducibility: iqembu le-enediol kuvithamini liyancishiswa kakhulu, lizinzile endaweni ene-acidic, futhi libhujiswa kalula endaweni yokushisa, ukukhanya, i-aerobic kanye ne-alkaline.I-Vitamin C i-oxidized ukuze ikhiqize isakhiwo esisekelwe ku-diketo se-dehydrovitamin C, i-dehydrovitamin C ingatholakala ngemva kokunciphisa i-hydrogenation ye-vitamin C. Ngaphezu kwalokho, kusisombululo se-alkaline nesisombululo esinamandla se-asidi, i-dehydrovitamin C ingathuthukiswa nge-hydrolyzed ukuze ithole i-diketogulonic acid. |
| Umsebenzi wokuphila | 1. I-Hydroxylation I-Vitamin C ibamba iqhaza ekuphenduleni kwe-hydroxylation emzimbeni womuntu, okuhlobene ne-metabolism yezinto eziningi ezibalulekile emzimbeni womuntu.Isibonelo, i-vitamin C ingabamba iqhaza futhi ikhuthaze i-hydroxylation ye-cholesterol ibe yi-bile acids;Ukuthuthukisa umsebenzi oxubile we-oxidase;Ibandakanyeka esenzweni se-hydroxylase futhi ikhuthaza ukuhlanganiswa kwama-amino acid neurotransmitters 5-hydroxytryptamine ne-norepinephrine. 2. I-Antioxidant I-Vitamin C ine-reducibility eqinile futhi iyi-antioxidant enhle kakhulu encibilikayo emanzini, enganciphisa ama-hydroxyl radicals, ama-superoxides namanye ama-oxide asebenzayo emzimbeni womuntu, futhi ingasusa ama-radicals mahhala futhi ivimbele i-lipid peroxidation. 3. Khulisa ukuzivikela komzimba Umsebenzi we-phagocytic we-leukocyte uhlobene nezinga lamavithamini ku-plasma.Umphumela we-antioxidant kavithamini C unganciphisa isibopho se-disulfide (-S - S -) ku-antibody kuya ku-sulfhydryl (-SH), bese ukhuthaza ukuncipha kwe-cystine ku-cysteine, futhi ekugcineni ukhuthaze ukwakheka kwamasosha omzimba. 4. Khipha ubuthi Imithamo emikhulu kavithamini C ingasebenza kuma-ion ensimbi esindayo afana ne-Pb2+, Hg2+, Cd2+, ubuthi bebhaktheriya, i-benzene namanye ama-lysins ezidakamizwa.Umshini oyinhloko umi kanje: ukuncipha okuqinile kwevithamini C kungasusa i-glutathione ene-oxidized emzimbeni womuntu, bese kwakha inkimbinkimbi enama-ion ensimbi esindayo azokhishwa emzimbeni;Ngenxa yokuthi i-oksijini endaweni ye-C2 ye-vitamin C ikhokhiswa kabi, i-vitamin C ngokwayo ingabuye ihlanganiswe ne-ion yensimbi futhi ikhishwe emzimbeni ngomchamo;I-Vitamin C ithuthukisa umsebenzi we-enzyme (i-hydroxylation) ukuze kube lula ukuxoshwa kobuthi nezidakamizwa. 5. Ukumuncwa kanye ne-metabolism Ukumuncwa kukavithamini C ngokudla emzimbeni womuntu kuwukuthuthwa okusebenzayo emathunjini amancane angaphezulu ngesithutha, futhi inani elincane limuncwa ukusakazwa kwesikhashana.Uma ukuthathwa kwevithamini C kuphansi, cishe wonke angamuncwa, futhi lapho umthamo ufinyelela ku-500 mg/d, izinga lokumunca lizokwehla lifinyelele cishe ku-75%.Ivithamini C emuncwe izongena ngokushesha ekujikelezeni kwegazi futhi ingene ezicutshini ezihlukene nezitho zomzimba. I-vitamin C eminingi igaywe emzimbeni womuntu ibe yi-oxalic acid, i-2, i-3-diketogulonic acid, noma ihlanganiswe ne-sulfuric acid ukuze yakhe i-ascorbate-2-sulfuric acid futhi ikhishwe emchameni;Okunye kwakho kukhishelwa umchamo.Inani likavithamini C elikhishwa emchameni liyathinteka ekuthathweni kukavithamini C, ukusebenza kwezinso, kanye nenani lenkumbulo eligcinwe emzimbeni. |
| Indlela yokugcina | Gwema ukugcina ngama-oxidant aqinile nama-alkali, futhi ugcine esitsheni esivaliwe esigcwele amagesi angenayo emazingeni okushisa aphansi.
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Izinzuzo Zethu
I-1.Sineqembu eliqeqeshiwe nelisebenza kahle elingahlangabezana nezidingo zakho ezihlukahlukene.
2.Ube nolwazi olucebile kanye nesipiliyoni sokuthengisa emikhiqizweni yamakhemikhali, futhi ube nocwaningo olunzulu mayelana nokusetshenziswa kwemikhiqizo kanye nendlela yokwandisa imiphumela yayo.
I-3.Isistimu izwakala, kusukela ekuhlinzekeni kuya ekukhiqizeni, ekupakisheni, ekuhlolweni kwekhwalithi, emva kokuthengisa, futhi kusukela kukhwalithi kuya enkonzweni ukuze kuqinisekiswe ukwaneliseka kwamakhasimende.
Inzuzo ye-4.Price.Ngokwesisekelo sokuqinisekisa ikhwalithi, sizokunikeza intengo engcono kakhulu ukusiza ukukhulisa izintshisekelo zamakhasimende.
5.Izinzuzo zokuhamba, umoya, ulwandle, umhlaba, i-express, konke kunama-agent azinikele ukuthi akunakekele.Kungakhathaliseki ukuthi iyiphi indlela yokuthutha ofuna ukuyithatha, singakwenza.
