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Letlapa le Ratoang ka ho Fetisisa la Vithamine C bakeng sa Ntlafatso ea Tšireletso ea Batho

Tlhaloso e Khutšoanyane:

Vithamine C (Vitamin C), ka lebitso la ascorbic acid (Ascorbic acid), foromo ea molek'hule ke C6H8O6, ke motsoako oa polyhydroxyl o nang le liathomo tse 6 tsa khabone, ke vithamine e qhibilihang metsing e hlokahalang ho boloka tšebetso e tloaelehileng ea 'mele le metabolism e sa tloaelehang. karabelo ea lisele.Ponahalo ea vithamine C e hloekileng ke kristale e tšoeu kapa phofo ea crystalline, e qhibilihang habonolo metsing, e qhibiliha hanyenyane ka har'a ethanol, e sa qhibilihe ka har'a ether, benzene, grease, joalo-joalo. Vithamine C e na le asiti, e fokotsang, e sebetsa ka mahlo le lik'habohaedreite. hydroxylation, antioxidant, matlafatso ea 'mele ea ho itšireletsa mafung le litlamorao tsa detoxification' meleng oa motho.Indasteri e haholo-holo ka biosynthesis (fermentation) mokhoa ho lokisetsa vithamine C, vithamine C e haholo-holo sebelisoa tšimong ea bongaka le lijo tšimong.


  • 'Misa oa Molar:176.12 G/Mol
  • NkhaE hlokang tatso
  • Tekano:1.65 g/cm3(25°c)
  • Fusing Point:190-192 °c
  • Sebaka sa ho Bela:552.67 °c
  • Naha ea tlhaho:China
  • Lintlha tsa Sehlahisoa

    Li-tag tsa Sehlahisoa

    Tlhaloso ea Sehlahisoa

    Sehlahisoa Vithamine C
    CAS 50-81-7
    Ponahalo Khalase e tšoeu kapa phofo e tšoeu ea kristale
    Solubility E qhibiliha ka metsing, e qhibiliha hanyenyane ka har'a ethanol, ha e qhibilihe ka har'a ether, benzene, grease, joalo-joalo.

    Vithamine C (Vitamin C), ka lebitso la ascorbic acid (Ascorbic acid), foromo ea molek'hule ke C6H8O6, ke motsoako oa polyhydroxyl o nang le liathomo tse 6 tsa khabone, ke vithamine e qhibilihang metsing e hlokahalang ho boloka tšebetso e tloaelehileng ea 'mele le metabolism e sa tloaelehang. karabelo ea lisele.Ponahalo ea vithamine C e hloekileng ke kristale e tšoeu kapa phofo ea crystalline, e qhibilihang habonolo metsing, e qhibiliha hanyenyane ka har'a ethanol, e sa qhibilihe ka har'a ether, benzene, grease, joalo-joalo. Vithamine C e na le asiti, e fokotsang, e sebetsa ka mahlo le lik'habohaedreite. hydroxylation, antioxidant, matlafatso ea 'mele ea ho itšireletsa mafung le litlamorao tsa detoxification' meleng oa motho.Indasteri e haholo-holo ka biosynthesis (fermentation) mokhoa ho lokisetsa vithamine C, vithamine C e haholo-holo sebelisoa tšimong ea bongaka le lijo tšimong.

     
     
     
    Lintho tsa 'mele le tsa lik'hemik'hale 1. Ponahalo: kristale e tšoeu kapa phofo ea kristale.
    2. Sollubility: e qhibiliha habonolo ka metsing, e qhibiliha hanyenyane ka har'a ethanol, e sa qhibilihe ka har'a ether, benzene, grease, joalo-joalo.
    3. Ts'ebetso ea optical: Vithamine C e na le li-isomers tsa optical tse 4, 'me ho potoloha ho khethehileng ha tharollo ea metsi e nang le L-ascorbic acid ea 0.10 g / ml ke +20.5 ° -+21.5 °.
    4. Acid: Vitamin C e na le enediol base, e nang le asiti, ka kakaretso e bonahatsoa e le asiti e bonolo e ka sebetsanang le sodium bicarbonate ho hlahisa letsoai la sodium.
    5. Lintho tsa lik'habohaedreite: Sebopeho sa lik'hemik'hale tsa vithamine C se tšoana le sa tsoekere, se nang le thepa ea tsoekere, e ka sebelisoang ka hydrolyzed le decarboxylated ho hlahisa pentose e teng, 'me e tsoela pele ho lahleheloa ke metsi ho hlahisa, ho eketsa pyrrole le ho futhumatsa ho 50 ºC e tla hlahisa boputsoa.
    6. Litšobotsi tsa ho monya ha ultraviolet: Ka lebaka la boteng ba li-conjugated bond tse peli ka limolek'hule tsa vithamine C, tharollo ea eona ea dilute e na le tekanyo e phahameng ea ho monya ho 243 nm wavelength, 'me boholo ba maqhubu a ho monya bo tla khutlisetsoa ho 265 nm tlas'a maemo a acidic kapa alkaline.
    7. Reducibility: sehlopha sa enediol ka vithamine se fokotsehile haholo, se tsitsitse sebakeng se nang le acidic, 'me se senyeha habonolo mocheso, leseli, tikoloho ea aerobic le alkaline.Vithamine C e na le oxidized ho hlahisa sebopeho sa diketo-based dehydrovitamin C, dehydrovitamin C e ka fumanoa ka mor'a ho fokotseha ha hydrogenation ea vithamine C. Ho phaella moo, ka tharollo ea alkaline le tharollo e matla ea acid, dehydrovitamin C e ka tsoela pele ka hydrolyzed ho fumana diketogulonic acid.
    Mosebetsi wa fisioloji 1. Hydroxylation
    Vithamine C e kenya letsoho karabelong ea hydroxylation 'meleng oa motho, e amanang le metabolism ea lintho tse ngata tsa bohlokoa' meleng oa motho.Ka mohlala, vithamine C e ka kenya letsoho le ho khothalletsa hydroxylation ea k'holeseterole ka bile acid;Ho ntlafatsa ts'ebetso ea oxidase ea ts'ebetso e kopaneng;E ameha ketsong ea hydroxylase 'me e khothalletsa motsoako oa li-neurotransmitters tsa amino acid 5-hydroxytryptamine le norepinephrine.
    2. Antioxidant
    Vithamine C e na le reducibility e matla 'me ke antioxidant e ntle haholo e qhibilihang ka metsing, e ka fokotsang hydroxyl radicals, superoxides le li-oxide tse ling tse sebetsang' meleng oa motho, 'me e ka tlosa li-radicals tsa mahala le ho thibela lipid peroxidation.
    3. Matlafatsa tšireletso ea 'mele
    Mosebetsi oa phagocytic oa leukocyte o amana le boemo ba vithamine ho plasma.Phello ea antioxidant ea vithamine C e ka fokotsa tlamo ea disulfide (-S - S -) ho antibody ho sulfhydryl (-SH), ebe e khothalletsa phokotso ea cystine ho cysteine, 'me qetellong e khothalletsa ho thehoa ha li-antibodies.
    4. Nkotsa chefo
    Litekanyo tse kholo tsa vithamine C li ka sebetsa ho li-ion tse boima tse kang Pb2+, Hg2+, Cd2+, chefo ea baktheria, benzene le li-lysin tse ling tsa lithethefatsi.Mokhoa o ka sehloohong ke o latelang: ho fokotseha ho matla ha vithamine C ho ka tlosa glutathione e nang le oxidized 'meleng oa motho, ebe e theha motsoako o nang le li-ion tse boima tse lokelang ho ntšoa' meleng;Hobane oksijene sebakeng sa C2 sa vithamine C e qosoa hampe, vithamine C ka boeona e ka boela ea kopanngoa le li-ion tsa tšepe 'me ea ntšoa 'meleng ka moroto;Vithamine C e ntlafatsa ts'ebetso ea enzyme (hydroxylation) ho thusa ho ntša chefo le lithethefatsi.
    5. Ho monya le metabolism
    Ho monya ha vithamine C ka ho kenngoa ha lijo 'meleng oa motho ke ho tsamaisoa ka mafolofolo ka har'a mala a manyane a ka holimo ke sepalangoang, 'me chelete e nyenyane e kenngoa ke phallo e sa sebetseng.Ha ho kenngoa ha vithamine C ho fokotseha, hoo e ka bang tsohle li ka kenngoa, 'me ha ho noa ho fihla ho 500 mg / d, tekanyo ea ho monya e tla theohela hoo e ka bang 75%.Vithamine C e monyelitsoeng e tla kena ka potlako ho potoloha ha mali 'me e kene liseleng tse fapaneng le litho tsa' mele.
    Boholo ba vithamine C bo kenngoa 'meleng oa motho hore e be oxalic acid, 2, 3-diketogulonic acid, kapa e kopantsoe le sulfuric acid ho etsa ascorbate-2-sulfuric acid' me e ntšoa ka har'a moroto;E 'ngoe ea eona e ntšoa ka har'a moroto.Palo ea vithamine C e ntšitsoeng ka har'a moroto e angoa ke ho noa vithamine C, tšebetso ea liphio, le boholo ba mohopolo o bolokiloeng 'meleng.
    Mokhoa oa ho boloka

    Qoba ho boloka ka li-oxidants tse matla le alkalis, 'me u boloke ka sejaneng se tiisitsoeng se tletseng likhase tse sa sebetseng ka mocheso o tlase.

     

     

    Melemo ea Rōna

    1.Re na le sehlopha sa setsebi le se sebetsang se ka finyellang litlhoko tsa hau tse sa tšoaneng.
    2.Ho ba le tsebo e ngata le phihlelo ea thekiso lihlahisoa tsa lik'hemik'hale, 'me u be le lipatlisiso tse tebileng mabapi le tšebeliso ea lihlahisoa le mokhoa oa ho eketsa liphello tsa tsona.
    3.Sistimi e utloahala, ho tloha phepelong ho ea ho tlhahiso, ho paka, tlhahlobo ea boleng, kamora ho rekisa, le ho tloha boleng ho ea ho ts'ebeletso ho netefatsa khotsofalo ea bareki.
    4.Molemo oa theko.Motheong oa ho netefatsa boleng, re tla u fa theko e ntle ho thusa ho holisa lithahasello tsa bareki.
    5.Melemo ea lipalangoang, moea, leoatle, naha, e hlalosang, bohle ba na le baemeli ba inehetseng ho e hlokomela.Ho sa tsotellehe hore na u batla ho nka mokhoa ofe oa lipalangoang, re ka o etsa.


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