Vitamin C yana da tasirin hanawa da kuma kula da ascorbic acid, don haka an san shi da sunaascorbic acidkuma bitamin ne mai narkewa da ruwa. Ana samun bitamin C na halitta mafi yawa a cikin sabbin 'ya'yan itatuwa (apples, lemu, kiwifruit, da sauransu) da kayan lambu (tumatir, cucumbers, da kabeji, da sauransu). Saboda rashin key enzyme a mataki na karshe na bitamin C biosynthesis a cikin jikin mutum, watoL-glucuronic acid 1,4-lactone oxidase (GLO),dole ne a dauki bitamin C daga abinci.
Tsarin kwayoyin halitta na bitamin C shine C6H8O6, wanda shine babban wakili mai ragewa. The biyu enol hydroxyl kungiyoyin a kan 2 da 3 carbon atoms a cikin kwayoyin suna da sauƙi dissociated da saki H +, game da shi oxidizing don samar da dehydrogenated bitamin C. Vitamin C da dehydrogenated bitamin C samar da redox tsarin reversible, exerting daban-daban antioxidant da sauran ayyuka, da kuma taka muhimmiyar rawa a jikin mutum. Lokacin da aka yi amfani da shi a fannin kayan shafawa, bitamin C yana da ayyuka irin su whitening da inganta haɓakar collagen.
Amfanin bitamin C
fata fata
Akwai manyan hanyoyi guda biyu da subitamin Cyana da tasiri akan fata. Hanya ta farko ita ce bitamin C na iya rage duhu oxygen melanin a lokacin samar da melanin don rage melanin. Launin melanin yana ƙaddara ta tsarin quinone a cikin kwayoyin melanin, kuma bitamin C yana da dukiya na wakili mai ragewa, wanda zai iya rage tsarin quinone zuwa tsarin phenolic. Hanya ta biyu ita ce, bitamin C na iya shiga cikin metabolism na tyrosine a cikin jiki, don haka rage jujjuyawar tyrosine zuwa melanin.
antioxidant
radicals free radicals abubuwa ne masu cutarwa ta hanyar halayen jiki, waɗanda ke da kaddarorin oxidizing masu ƙarfi kuma suna iya lalata kyallen takarda da sel, suna haifar da jerin cututtuka na yau da kullun.Vitamin Cshi ne mai narkewar ruwa mai narkewa mai ɓacin rai wanda zai iya kawar da radicals kyauta kamar - OH, R -, da O2- a cikin jiki, yana taka muhimmiyar rawa a ayyukan antioxidant.
Haɓaka haɗin collagen
Akwai wallafe-wallafen da ke nuna cewa aikace-aikacen yau da kullun na abubuwan da ke ɗauke da 5% L-ascorbic acid a cikin fata na iya haɓaka matakan maganganun mRNA na nau'in I da nau'in collagen na III a cikin fata, da matakan maganganun mRNA na nau'ikan invertases guda uku, carboxycollagenase. , aminoprocollagenase, da lysine oxidase suma sun karu zuwa irin wannan nau'in, yana nuna cewa bitamin C na iya inganta haɓakar collagen a cikin fata.
Tasirin prooxidation
Bugu da ƙari, tasirin antioxidant, bitamin C kuma yana da tasirin prooxidant a gaban ions karfe, kuma yana iya haifar da lipid, furotin oxidation, da lalata DNA, ta haka yana rinjayar maganganun kwayoyin halitta. Vitamin C na iya rage peroxide (H2O2) zuwa hydroxyl radical da inganta samuwar lalacewa ta hanyar rage Fe3 + zuwa Fe2 + da Cu2 + zuwa Cu +. Don haka, ba a ba da shawarar ƙara bitamin C ga mutanen da ke da babban ƙarfe ko waɗanda ke da yanayin cututtukan da ke da alaƙa da hawan ƙarfe kamar thalassaemia ko hemochromatosis.
Lokacin aikawa: Afrilu-10-2023
