Txhais

Vitamin C yog dej-soluble vitamin, tshuaj hu ua L-ascorbic acid, nrog ib tug molecular mis ntawm C ? H ? O ? thiab molecular hnyav ntawm 176.12. Nws yog ib qho tseem ceeb cov zaub mov tseem ceeb rau tib neeg lub cev, nrog lub zog txo qis, dav dav hauv cov txiv hmab txiv ntoo thiab zaub tshiab, thiab tseem ceeb heev rau kev tswj cov metabolism thiab kev noj qab haus huv ntawm lub cev.

Lub cev thiab tshuaj muaj zog

Dej solubility

Vitamin C yooj yim soluble hauv dej thiab tuaj yeem nqus tau sai los ntawm tib neeg lub cev, tab sis kev noj ntau dhau tuaj yeem tawm los ntawm cov zis.

Reductive thiab antioxidant zog

Raws li tus neeg sawv cev muaj zog, nws tuaj yeem tshem tawm cov dawb radicals, tiv thaiv cov hlwb los ntawm kev puas tsuaj oxidative, thiab txhawb kev nqus hlau (txo trivalent hlau rau divalent hlau).

Acid

Nws muaj cov yam ntxwv ntawm cov kua qaub, cov khoom siv tshuaj lom neeg, thiab muaj kev cuam tshuam nrog lwm yam tshuaj (xws li hydrolysis thiab oxidation).

Thermal instability

Tom qab cua sov, nws yooj yim rau decompose thiab ua tsis tau zoo. Kev ua noj ua haus ntev lossis kev kho kub kub tuaj yeem ua rau txo qis ntawm vitamin C hauv cov txiv hmab txiv ntoo thiab zaub.

Qab zib zoo sib xws

Cov qauv molecular zoo ib yam li cov suab thaj, muaj qee qhov physicochemical cov yam ntxwv ntawm cov suab thaj.

Cov ntsiab lus

Lub physicochemical thaj chaw ntawm vitamin C txiav txim siab nws cov kev ua si lom neeg thiab kev ua haujlwm, xws li dej solubility thiab txo qis kev txhawb nqa nws cov tshuaj tiv thaiv antioxidant thiab kev nqus hlau, thaum tshav kub kub qhia txog qhov xav tau ntxiv los ntawm cov khoom xyaw tshiab los yog tsim nyog ua noj.