Vitamin E can be divided into natural and synthetic vitamin E. Natural vitamin E has 8 structures, namely , , , δ tocopherol and , , , δ tocotrienols. The biological activity of natural vitamin E is higher than that of artificial synthesis, and the most active is natural D- -tokoferol.
Sous Vitamin E
Natirèl vitamin E lajman distribiye nan tisi plant yo, espesyalman nan nwa, lwil legim ak legim. Tokoferol yo anjeneral pi wo nan lwil legim pase tocotrienols (eksepte lwil kokoye). Lwil jèm ble a gen pi gwo kontni vitamin E ak yon kontni segondè nan -tokoferol. Kontni an nan tokoferol nan lwil mayi ak lwil oliv soya se dezyèm sèlman nan lwil jèm ble, ak kontni an nan -tokoferol nan de lwil sa yo pi wo.
Byoaktivite nan Vitamin E
The structure-activity relationship study of vitamin E shows that the hydroxyl group in the molecule is the active group and must be in para position with the heterocyclic ring atom. The more methyl groups on the benzene ring, the stronger the activity, shortening or removing the side chain in the molecule reduces or disappears the activity. The three-dimensional structure of vitamin E also has an effect on the activity. And the activity of D-alfa tokoferol is the strongest.
Pwopriyete antioksidan nan Vitamin E
Vitamin E ka itilize kòm yon antioksidan pou lwil oliv epi li se yon pwodwi antioksidan natirèl ak benefisye pou kò imen an.
Radikal gratis jwe yon wòl enpòtan nan metabolis nòmal fizyolojik kò imen an. Paske tokoferol gen yon gwoup idroksil aktif sou bag benzèn la, li gen rediksyon epi li ka bay yon sèl elèktron. Lè radikal gratis antre nan faz lipid la epi sibi yon reyaksyon chèn, tokoferol ka pran radikal gratis, kidonk bloke reyaksyon an chèn nan radikal gratis ak pwoteje kò a kont oksidasyon.
The antioxidant properties of various vitamin E are opposite to the strength of physiological activity. The antioxidant properties from strong to weak are: δ-tocopherol>γ-tocopherol>β-tocopherol>-tokoferol. Tocotrienols yo pi gwo pase tocopherols korespondan yo.