Vitamin C, los yog L-ascorbic acid, tsuas yog ib tug biologically active daim ntawv ntawm vitamin C (lwm yam ntawm vitamin C yuav tsum tau hloov mus rau ascorbic acid nyob rau hauv daim tawv nqaij) thiab yog ib tug dej-soluble vitamin. Txawm hais tias vitamin C yog cov antioxidant ntau tshaj plaws nyob rau hauv daim tawv nqaij, depletion ntawm vitamin C nyob rau hauv lub epidermis yuav tshwm sim thaum peb raug oxidative kev nyuaj siab los ntawm cov pa phem los yog UV raug. Tsis tas li ntawd, nrog rau lub hnub nyoog nce, cov ntsiab lus ntawm cov vitamin nyob rau hauv daim tawv nqaij kuj yuav txo. Nws yog ib qho tsim nyog hais tias tib neeg lub cev tsis tuaj yeem tsim cov vitamin C los ntawm nws tus kheej, yog li peb yuav tsum tswj hwm cov vitamin C hauv lub cev los ntawm kev siv sab nraud, xws li kev tswj xyuas qhov ncauj. Ua ke nrog kev siv cov vitamin C-muaj cov khoom tu tawv nqaij.
Txawm hais tias vitamin C muaj zog heev, nws qhov teeb meem loj tshaj plaws yog qhov tsis ruaj khov nyob rau hauv qhov nruab nrab thiab alkaline pH ib puag ncig, thiab yooj yim inactivated los ntawm oxidation cov tshuaj tiv thaiv (sib cuag nrog dej, teeb, cua, cua sov), feem ntau peb ua tsis tau. xav tau kev tu tawv nqaij.
Nrog rau kev txhim kho cov cuab yeej siv kho kom zoo nkauj, cov kws tshawb fawb tau ua tiav ntau yam VC derivatives los daws cov teeb meem ntawm kev ruaj ntseg ntawm cov qauv vitamin C, xws li ascorbic acid glucose (AA2G), magnesium ascorbyl phosphate (MAP), esterified vitamin C (VC-IP) thiab lwm yam, tab sis AA2G, raws li cov qauv hydrophilic, tseem tsis muaj qhov permeability, thiab txawm hais tias MAP muaj cov nyhuv whitening zoo heev, nws qhov tsis zoo yog tsis txaus siab. Yog li ntawd, yog tias koj saib ntawm stability, permeability, mildness thiab conversion tus nqi comprehensively,Ascorbyl Tetraisopalmitate hmoov(tseem hu ua VC-IP) yog qhov kev xaiv zoo, vim li cas?
Thawj qhov laj thawj yog vim li cas VC-IP ntxiv hydroxyl esterification rau cov qauv molecular ntawm tus qauv VC, kom cov molecule tsis yooj yim oxidized, uas tuaj yeem ua kom muaj kev ua haujlwm siab tshaj plaws ntawm VC-IP, txawm tias nws muab tso rau hauv chav tsev kub rau 6. lub hlis, qhov kev ua si tuaj yeem khaws ntau dua 85 feem pua tsis muaj xim.
Qhov thib ob, vim hais tias cov molecule muaj plaub pawg palmitic acid, nws dhau los ua rog-soluble VC. Piv nrog rau cov dej-soluble VC, roj-soluble VC-IP tuaj yeem nkag mus rau hauv daim tawv nqaij zoo dua thiab tau txais kev hloov dua siab tshiab. Raws li kev sim, qhov hloov pauv ntawm VC-IP ntawm cov qauv ntawm daim tawv nqaij recombinant siab li 84 feem pua hauv 10 feeb.
Flavia
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