Thoob plaws hauv nws daim ntawv thov, Vitamin C zoo kawg nkaus antioxidant kev ua tau ntev tau lees paub los ntawm kev kawm thiab kev lag luam. Txawm li cas los xij, nws qhov rhiab heev rau cov cua sov, lub teeb, thiab noo noo ib txwm yog ib qho kev txhawj xeeb loj rau cov tsim khoom thiab cov khoom noj khoom haus. Lub advent ntawmVitamin C Palmitatemuaj ib tug classic "kev hloov kho cov qauv" mus kom ze los daws qhov teeb meem no. Nws yog ib qho derivative tsim los ntawm esterification ntawm 6-hydroxyl pawg L-ascorbic acid nrog palmitic acid. Qhov kev hloov pauv no hloov pauv nws los ntawm cov dej-soluble Vitamin C rau hauv amphiphilic molecule nrog ob qho tib si hydrophilic thiab lipophilic zog, ua kom nws cov rog solubility thiab tshuaj stability thaum tuav cov haujlwm tseem ceeb ntawm Vitamin C.
🧬 Esterified Vitamin C nrog ruaj khov molecular configuration
Vitamin C Palmitate, molecular mis (C22H38O7), CAS No.: 137-66-6, molecular hnyav 414.53. Cov molecule muaj ob qhov tseem ceeb: ib qho L-ascorbic acid core uas muaj tsib-tus neeg koom nrog enediol lactone nplhaib, thiab kaum rau-carbon palmitic acid alkyl saw covalently txuas los ntawm 6-O ester daim ntawv cog lus. Tag nrho cov chaw chiral nyob rau hauv lub molecule yog nyob rau hauv lub natural L configuration. Enzymatic esterification los yog chemical synthesis ua ke nrog anaerobic recrystallization tshem tawm unesterified vitamin C thiab diester byproducts, tiv thaiv impurities los cuam tshuam nrog keratinocyte thiab lipid oxidation kuaj tau.
Yog hais tias lub palmitic acid alkyl fragment raug tshem tawm, cov vitamin C ntshiab yog dej heev -soluble, muaj ib tug qis log-P tus nqi, thiab tsuas yog nyob rau ntawm daim tawv nqaij. Tsis tas li ntawd, pawg enediol tau yooj yim catalyzed thiab degraded los ntawm hlau ions. Ntev -chain alkyl pab pawg txhim kho lipid solubility, thaum lub nplhaib lactone khaws cov qauv tseem ceeb antioxidant. Tom qab 24 lub hlis ntawm kev cia nyob rau hauv lub teeb - pov thawj, kaw ib puag ncig ntawm 2-8 degree, ester bonds tsis hydrolyze los yog tawg. Cov pob txha molecular tseem nyob tsis zoo txawm tias tom qab keratinocyte kab lis kev cai thiab kub-kub ceev roj oxidation incubation.
Cov 2- thiab 3-endiol pawg ntawm lub nplhaib ascorbic acid yog cov chaw tseem ceeb rau antioxidant thiab melanin-inhibiting teebmeem. Tom qabVitamin C Palmitatenkag mus rau keratinocytes los yog lipid matrix, intracellular lipases cleave ester bonds tso tawm dawb vitamin C. Cov qauv endiol pub hydrogen atoms los txiav cov dawb radical saw cov tshuaj tiv thaiv, thaum tib lub sij hawm chelating Cu²⁺ thiab Fe³⁺ hlau ions, inhibiting tyroslipid kev ua thiab thaiv oxidation. Thaum lub nplhaib lactone raug oxidized thiab puas lawm, lub molecule poob nws hydrogen - pub lub peev xwm, thiab cov nyhuv antioxidant yog ploj tag. Qhov tsis zoo 6-O-palmitoyl-L-ascorbic acid skeleton yog ib qho mob tseem ceeb rau kev ua tau zoo ntawm Vitamin C Palmitate.
Lub hydrophobic carbon saw ntawm palmitic acid thiab lub ncov qaumteb qabteb lactone nplhaib synergistically tswj cov lipid - dej muab faib coefficient, thaum lub hexadecyl alkyl pab pawg neeg muab lipophilicity, pab lub molecule mus smoothly nkag mus rau hauv lub phospholipid bilayer ntawm lub stratum corneum. Cov pab pawg hydroxyl ntawm lub nplhaib ascorbic acid khaws cov hydrophilicity me ntsis, tso cai rau nws kom hydrolyze thiab tso tawm cov niam txiv nquag ua haujlwm tsuas yog tom qab nkag mus rau hauv ib puag ncig intracellular aqueous. Ntshiab dawb vitamin C yog ib qho nyuaj rau yaj nyob rau hauv cov roj cog, thiab derivatives nrog ntev alkyl carbon chains yuav crystallize nyob rau hauv cov kab lis kev cai nruab nrab. Vitamin C Palmitate balances transdermal penetration thiab roj-theem dispersion, ua rau nws haum rau loj - nplai ntawm daim tawv nqaij kab lis kev cai thiab siab -throughput antioxidant molecule soj ntsuam.
Cov molecule no tsis indiscriminately cuam tshuam nrog ntau yam metabolic enzymes hauv hlwb. Nws tseem ruaj khov nyob rau hauv nws daim ntawv prodrug nyob rau hauv cov roj nyob rau hauv vitro ib puag ncig, tsuas yog hydrolyzing los tsim cov active ingredient nyob rau hauv lub hlwb. Nws muaj qis heev rau ib txwm fibroblasts thiab keratinocytes. Thaum cov ester daim ntawv cog lus tawg ntxov ntxov los yog pawg enediol yog oxidized, dawb vitamin C raug tso tawm, ua rau cov mis daj tau yooj yim thiab txo nws cov txiaj ntsig hauv kev tshem tawm cov dawb radicals thiab inhibiting melanin.
⚙️Qhov ua ntej qeeb-tso tawm mechanism exerts nws antioxidant thiab melanin{1}} inhibiting teebmeem nyob rau hauv ib tug stratified yam.
Nyob rau hauv kev noj qab nyob zoo, daim tawv nqaij endogenous vitamin C tsis tu ncua tshem tawm cov pa oxygen reactive uas tsim los ntawm ultraviolet hluav taws xob, thiab tyrosinase kev ua si tseem nyob rau theem ib txwm. Peroxides nyob rau hauv cov roj noj tau raug tshem tawm los ntawm ntuj antioxidants, tiv thaiv rancidity thiab tshem tawm kev cuam tshuam ntawm esterified vitamin C nrog physiological metabolism.
Thaum cov tawv nqaij raug tshav ntuj ntev los yog cov roj zaub tau khaws cia ntawm qhov kub thiab txias rau lub sijhawm ntev, cov dawb radicals sib sau ua ke, ua rau kev ua kom tsis zoo ntawm tyrosinase, ua rau cov pob qij txha thiab dullness ntawm daim tawv nqaij, thiab muaj ntxhiab tsw hauv cov roj noj. Ordinary dawb vitamin C muaj kev ruaj ntseg tsis zoo thiab sai sai decomposes thiab ua tsis tau zoo nyob rau hauv cov roj theem, uas ua rau tsis tshua muaj transdermal absorption. Substandard vitamin C palmitate muaj ntau cov vitamin C dawb, uas tsis tsuas yog degrades cov mis stability tab sis kuj irritates keratinocytes, distorting nyob rau hauv vitro xeem cov ntaub ntawv. Polyphenolic antioxidants tsuas tuaj yeem tshem tawm cov dawb radicals thiab tsis tuaj yeem inhibit tyrosinase, yog li txwv lawv cov nyhuv whitening.
Vitamin C palmitateleverages nws cov lipid solubility kom nkag mus rau hauv stratum corneum thiab lipid matrix, ua tiav cov nyhuv dual los ntawm kev siv cov tshuaj txhawb nqa -tso tawm mechanism. Thawj txheej ntawm inhibition tiv thaiv lipid peroxidation: Nws yog hydrolyzed los ntawm lipases nyob rau hauv cov nroj tsuag roj los yog daim tawv nqaij hlwb, tso L-ascorbic acid. Cov pab pawg enediol muab hydrogen atoms cuam tshuam cov kab mob dawb radical saw, chelates hloov pauv hlau ions, txo cov peroxide tus nqi ntawm lipids, thiab txo cov cellular oxidative puas tsuaj los ntawm ultraviolet hluav taws xob. Qhov thib ob txheej ntawm inhibition tiv thaiv melanin synthesis: Lub tso tawm vitamin C sib tw binds rau tooj liab ions ntawm lub active site ntawm tyrosinase, txo dopaquinone ntau lawm thiab ib txhij tshem ROS kom txo tau UV-induced tyrosinase upregulation, ua tau ib tug brightening nyhuv thiab fading tsaus nti. Tsis tas li ntawd, palmitic acid ntxiv cov lipids ntawm daim tawv nqaij thiab kho lub stratum corneum barrier. Raws li ib tug prodrug, Vitamin C Palmitate nthuav qhia kev ruaj ntseg zoo dua piv rau cov vitamin C dawb, ua rau nws haum rau cov roj- theem kev tsim kho tawv nqaij, tshawb nrhiav cov tshuaj tiv thaiv antioxidant, thiab tsim kom muaj UV-induced photoaging cell qauv.
Vitamin C Palmitate tso tawm nws cov khoom xyaw nquag tsuas yog tom qab nkag mus rau hauv cov hlwb, thiab yuav tsis cuam tshuam nrog kev loj hlob thiab cov metabolism ntawm keratinocytes; broad -spectrum phenolic derivatives yuav indiscriminately inhibits daim tawv nqaij metabolic enzymes, txo cell vitality thiab cuam tshuam nrog kev ntsuam xyuas; Vitamin C Palmitate muaj lub hom phiaj tshwj xeeb, thiab qhov kev sim no tsuas yog tsom rau cov dawb radical scavenging -tyrosinase inhibition txoj hauv kev, uas zoo heev txhim kho kev ntseeg siab ntawm antioxidant thiab pigmentation - txheeb xyuas cov txiaj ntsig.
🧫 Kev siv ntau yam hauv cov zaub mov thiab kev tshawb fawb tshuaj txhua hnub thiab kev txhim kho thiab kev tshawb fawb biochemical
Vitamin C Palmitate yog cov qauv siv rau kev tshawb fawb ntawm lipid-soluble antioxidant mechanisms, feem ntau siv hauv B-16 melanoma hlwb, peb-dimensional reconstructed tib neeg daim tawv nqaij qauv, thiab kev tsim kho ntawm lipid oxidation systems. Daim tawv nqaij photoaging thiab edible roj rancidity yog ob qho tib si tshwm sim los ntawm cov dawb radical saw tshua. Leveraging lub sustained - tso tawm, roj- theem stability, thiab zoo heev transdermal teebmeem ntawm Vitamin C Palmitate prodrug, ib tug incubation system tsis pub dawb vitamin C impurities yog tsim. Dawb radical scavenging muaj peev xwm thiab tyrosinase IC50 inhibition tsom xam tau ua, tsim kev ntsuam xyuas platform rau lipid-soluble antioxidant raw cov ntaub ntawv thiab muab piv cov antioxidant efficiency thiab keratin penetration peev xwm ntawm ntau yam vitamin C derivatives.
Vitamin C Palmitate yog siv dav hauv kev tshawb fawb txog UV-induced pigmentation thiab edible oil antioxidants, tsim UV-induced guinea pigmentation qauv thiab siab -kub lipid aging qauv. Nyob rau hauv cov xwm txheej pathological, cov dawb radicals tau ua tsis tu ncua thiab ntau dhau;Vitamin C Palmitateexerts nws cov nyhuv antioxidant los ntawm kev tso tawm tsis tu ncua. Cov txheej txheem them nyiaj ntawm cov tawv nqaij tom qab ntev - cov tshuaj pleev ib ce tau soj ntsuam, tshuaj xyuas cov tshuaj tiv thaiv kab mob me me thiab muaj txiaj ntsig zoo ntawm cov tshuaj tiv thaiv kab mob thiab txhim kho cov lipid- cov tshuaj tiv thaiv active molecule.
Vitamin C palmitate tuav tus nqi irreplaceable nyob rau hauv txoj kev loj hlob ntawm cov zaub mov additives thiab siab -kawg cosmetic intermediates, ua ib tug antioxidant muaj nyob rau hauv cream, serums, thiab ci roj. Kev ruaj ntseg tsis zoo ntawm cov vitamin C zoo tib yam txwv nws siv hauv cov roj- cov khoom lag luam. Vitamin C palmitate, ua ib lub tsev thaiv rau esterified vitamin C, tso cai rau kev hloov kho ntawm alkyl sab saw, ntxiv optimizing transdermal efficiency thiab intracellular tso tawm tus nqi, ua rau txoj kev loj hlob ntawm tsawg- irritation, ntev - noj cov khoom xyaw ntawm daim tawv nqaij thiab tshav kub- cov zaub mov resistant antioxidants. Tus txheej txheem ntxiv theem hauv cov khoom noj khoom haus yog 0.01-0.02%, thaum cov qib pom zoo ntxiv hauv cov tshuaj pleev ib ce yog 0.5-2%.
Vitamin C palmitate yog siv los ua tus qauv tshuaj pharmacodynamic hauv kev tsim cov lipid tshiab -soluble antioxidant lead molecules thoob ntiaj teb. Ntau yam alkyl- hloov kho cov vitamin C derivatives, keratinocyte- phiaj xwm prodrugs, thiab dawb radical scavengers raug muab piv siv Vitamin C palmitate los ntsuas nws lub peev xwm antioxidant, transdermal efficiency, thiab keratinocyte irritation. Nws ruaj khov kev ua haujlwm lom neeg thiab cov ntaub ntawv rov ua dua tshiab ntawm tes ua rau nws tus qauv siv rau siab - dhau los ntawm kev tshuaj xyuas thiab cov qauv- kev sib raug zoo ntawm kev txheeb xyuas ntawm ascorbic acid derivatives.
🔬Iterative optimization kev taw qhia ntawm palmyl sab saw molecules
Palmitate sab- kev hloov kho sawb yog ib qho kev taw qhia tseem ceeb hauv molecular engineering ntawmVitamin C Palmitate. Tus thawj molecule yog uniformly faib thoob plaws hauv lub stratum corneum, nrog tsawg concentrations nyob rau hauv basal melanocytes, ua rau siab npaum li cas. Hloov kho cov alkyl terminus los ntawm kev sib txuas keratin lipid-cov khoom sib txuas los yog melanocyte- cov phiaj xwm pab pawg ua rau cov derivatives uas sib sau ntau hauv cov txheej txheem basal. Cov tshuaj qis dua tuaj yeem tshem tawm cov dawb radicals, inhibit tyrosinase, thiab txo qis cov keratin residue ntawm qhov chaw, ua rau nws tsim nyog rau kev tsim cov khoom siv tshuaj pleev ib ce qis rau cov tawv nqaij rhiab heev.
Daim tawv nqaij microenvironment teb hloov kho yog qhov kev tshawb fawb kub tam sim no. Cov kws tshawb nrhiav txuas cov npog ntsej muag uas tuaj yeem tawg los ntawm melanocyte-cov lipases tshwj xeeb rau cov chaw ester daim ntawv cog lus. Lub prodrug tuav ib tug inert qauv nyob rau hauv lub stratum corneum, tiv thaiv ntxov ntxov tso ntawm vitamin C; nws tsuas yog decomposes thiab tso tawm cov active niam txiv compound thaum nkag mus rau basal melanocytes, ntxiv dag zog rau lub hom phiaj, txo cov nto ntawm daim tawv nqaij khaus, thiab tsim ib tug tshiab tiam ntawm kev nyab xeeb prodrug molecules.
Multi-functional molecule splicing broadens the Scope of pharmacological action. Ntxiv nrog rau cov dawb radical buildup, daim tawv nqaij ntawm daim tawv nqaij kuj yog nrog los ntawm qis -qib epidermal o. Los ntawm covalently khi lub ascorbate lactone lub nplhaib qaum nrog tiv thaiv - mob thiab teeb meem - kho qhov tawg, ib qho tshiab molecule yog tsim los uas tsis tsuas yog scavenges dawb radicals tab sis kuj txo cov tawv nqaij o thiab kho lub stratum corneum, tsim ib tug lead molecule nrog dual cov teebmeem ntawm faus.
Kev hloov ntawm cov pab pawg nyob ib puag ncig lub nplhaib lactone tuaj yeem hloov pauv kev ua haujlwm tsis zoo. Tus thawj Vitamin C Palmitate muaj cov tshuaj tiv thaiv antioxidant thiab melanin - inhibiting nyhuv, haum rau cov pa roj carbon monoxide - theem formulations. Los ntawm kev hloov kho cov pab pawg hloov pauv ntawm lub nplhaib, cov tshuaj tua kab mob zoo tshaj plaws los yog cov roj muaj zog -raws li antioxidant derivatives tuaj yeem npaj tau. Whitening derivatives tuaj yeem siv rau hauv cov tshuaj kho qhov muag tsaus, thaum cov roj -raws li antioxidant derivatives tuaj yeem siv los ua cov khoom ntxiv hauv cov roj ci, ua tiav cov kev cai ntawm oxidative metabolism.
Xaus
Vitamin C Palmitate yog 6-palmitoyl derivative ntawm vitamin C. Los ntawm kev sib txuas hydrophilic vitamin C nrog lipophilic palmitic acid, nws ua tiav kev hloov kho dual li ob qho tib si "stabilizing precursor" thiab "lipid-soluble antioxidant." Nyob rau hauv vivo, nws exerts nws classic antioxidant muaj nuj nqi los ntawm kev tso cov vitamin C los ntawm esterase hydrolysis, thaum nws tsis zoo molecule kuj tseem embed nws tus kheej nyob rau hauv lub cell membrane kom exert ib tug tshwj xeeb membrane tiv thaiv nyhuv.
Raws li ib tug ua tus neeg muag khoom ntawmVitamin C Palmitate, peb nkag siab txog qhov tseem ceeb ntawm cov saw hlau ruaj khov hauv kev sib tw ua lag luam. Peb cov txheej txheem kev tsim khoom thiab cov khoom lag luam tswj xyuas kom cov khoom siv tas mus li txawm tias cov khoom muag sib txawv. Thov mus saib peb cov khoom lag luam nthuav dav thiab sib tham txog koj qhov kev xav tau nrog peb cov kws tshaj lij ntawmallen@faithfulbio.com.
Cov ntaub ntawv
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- De-Luca, M., et al. (2024). Ntev-ntev kev tiv thaiv kev yees duab ntawm vitamin-C-palmitate ntawm 3-D reconstructed tib neeg daim tawv nqaij organoids. Daim tawv nqaij Pharmacology thiab Physiology, 37(8), 421-432.