Vitamini E (Vitamini E) ndi gulu la mavitamini osungunuka mafuta omwe ali ndi α, β, γ, δ-tocopherol ndi tocotrienol. Ndichinthu chofunikira kwambiri chomwe thupi silingathe kupanga palokha, ndipo ndi chimodzi mwazofunikira kwambiri za antioxidants 12.
Mapangidwe ake amapangidwa ndi mphete za benzopyrane ndi unyolo wam'mbali wa hydrophobic, womwe umapatsa lipid membrane kulowa 67.
thupi ndi mankhwala katundu

Kusungunuka: kusungunuka m'mafuta, ethanol ndi zosungunulira zina za organic, zosasungunuka m'madzi 12.
Kukhazikika : kukana kutentha (≤200 ° C) ndi malo okhala acidic koma okhudzidwa ndi alkali, mpweya, kuwala kwa UV ndi ayoni achitsulo (Fe3 + + / Cu2 +). Kuwotcha kumawononga kwambiri ntchito

Choyamba, antioxidant synergistic mechanism free radical scavenging circulatory system

Vitamini E, monga mafuta osungunuka a antioxidant, makamaka amachepetsa lipids free radicals mu cell membranes, pamene vitamini C, monga antioxidant sungunuka m'madzi, amachepetsa ndi kubwezeretsanso vitamini E (tocopherol free radicals), kupanga maulendo opitirira antioxidant cycle 17.
Zoyeserera zikuwonetsa kuti kuphatikiza ziwirizi kumatha kupititsa patsogolo mphamvu ya antioxidant ndi nthawi za 3, molekyu imodzi ya vitamini E imatha kuchotsa mosalekeza mpaka ma radicals aulere a 4, vitamini C kudzera munjira yosinthika kuti italikitse nthawi yake yochita 78.

Interphase Defense network

Vitamini E amamanga lipid bilayer ya cell membrane ndi kutsekereza lipid peroxidation chain reaction. Vitamini C amawononga ma free radicals osungunuka m'madzi mu cytoplasmic matrix kuti apange lipid - water biphasic protection system 13.

Chachiwiri, chitetezo chamthupi cha bidirectional activation chimapangitsa kuti chitetezo cha mthupi chitetezeke: Vitamini C imalimbikitsa neutrophil chemotaxis, vitamini E imathandizira NK cell ntchito, ndipo kuphatikiza kumachepetsa kuchuluka kwa matenda amtundu wa kupuma ndi 32% 15.
imayang'anira chitetezo chamthupi : synergistically imathandizira kuchuluka kwa T lymphocyte, imathandizira kupanga ma antibody ndi 28%, ndipo imakhala ndi phindu pakuyankha kwa katemera 57.

Chachitatu, njira yolumikizirana ndi thanzi la khungu

Chitetezo cha kufotokoza

Vitamini E imalepheretsa sepiperoxidation yopangidwa ndi UV ndipo vitamini C imalepheretsa ntchito ya tyrosinase, enzyme yofunika kwambiri mu kaphatikizidwe ka melanin, ndipo kuphatikiza kumachepetsa kuchuluka kwa erythematosis yapakhungu ndi 54% 24.

Kuwongolera kwa collagen metabolism

Vitamini C imayendetsa prolyl hydroxylase kuti ilimbikitse kaphatikizidwe ka collagen, ndipo vitamini E imachepetsa ntchito ya collagenase kuti iteteze kuwonongeka. Mayesero azachipatala awonetsa kuti kutha kwa khungu kumakula ndi 23% ndipo kuya kwa makwinya kumachepetsedwa ndi 19% 34.

4. Njira yothandizana ndi chitetezo cha mtima
Kulowetsedwa kwa atherosulinosis : Vitamini E imalepheretsa oxidation ya low-density lipoprotein (LDL) ndi vitamini C kukonza kuwonongeka kwa mitsempha ya endothelium kuphatikiza ndi 18% kutsika kwa chiopsezo cha zochitika zamtima 15.
Kusintha kwa microcirculation : vitamini E amachepetsa kuphatikizika kwa maselo a m'magazi, vitamini C amathandizira kulimba kwa capillary, ndipo ali ndi phindu lopewa komanso kuchiza matenda a shuga a retinopathy 58.

5. Makhalidwe a metabolic cooperative kukhathamiritsa
kagayidwe kachitsulo kagayidwe kazakudya: Vitamini C imachepetsa chitsulo cha trivalent kukhala chitsulo chosapanga dzimbiri, kusintha mayamwidwe nthawi 2-3; Vitamini E amateteza kukhazikika kwa erythrocyte membrane ndikuchepetsa chiopsezo cha hemolysis 57.
Kuchuluka kwa mafuta m'thupi: Vitamini E amaletsa HMG-CoA reductase kuti achepetse kaphatikizidwe ka cholesterol, vitamini C amathandizira kutulutsa kwa bile acid, ndipo kuphatikiza amachepetsa kuchuluka kwa cholesterol ndi 12% -15%.