Vitamini C muzinthu zosamalira khungu: chifukwa chiyani ndizotchuka kwambiri?

1, Ubwino wa vitamini C:
1) Antioxidant
Khungu likasonkhezeredwa ndi kuwala kwa dzuwa (ultraviolet radiation) kapena zowononga zachilengedwe, kuchuluka kwa ma free radicals kumapangidwa. Khungu limadalira dongosolo lovuta la ma enzyme ndi non enzyme antioxidants kuti lidziteteze ku kuwonongeka kwa ma free radicals.
VC ndiye antioxidant wochuluka kwambiri pakhungu la munthu, pogwiritsa ntchito mawonekedwe ake oxidizable m'malo mwa zinthu zina ndikuziteteza ku okosijeni. Mwanjira ina, VC imadzipereka kuti ichepetse ndikuchotsa ma radicals aulere, potero imateteza khungu.

2) Kuletsa kupanga melanin
VC ndi zotumphukira zake zimatha kusokoneza tyrosinase, kuchepetsa kutembenuka kwa tyrosinase, ndikuchepetsa kupanga melanin. Kuphatikiza pa kuletsa tyrosinase, VC imathanso kukhala ngati chochepetsera melanin komanso chinthu chapakatikati cha kaphatikizidwe ka melanin, dopaquinone, kuchepetsa wakuda kukhala wopanda utoto komanso kukwaniritsa zoyera. Vitamini C ndi chitetezo komanso chothandiza poyeretsa khungu.

3) Zoteteza khungu ku dzuwa

VC imatenga nawo gawo mu kaphatikizidwe ka collagen ndi mukopolysaccharides, imathandizira machiritso a bala, imaletsa kupsa ndi dzuwa, ndikupewa zotsatira zomwe zimasiyidwa ndi kuwala kwa dzuwa. Panthawi imodzimodziyo, vitamini C ali ndi katundu wabwino kwambiri wa antioxidant ndipo amatha kugwira ndi kuchepetsa ma radicals aulere pakhungu, kuteteza kuwonongeka kwa cheza cha ultraviolet. Choncho, vitamini C amatchedwa "intradermal sunscreen". Ngakhale silingathe kuyamwa kapena kutsekereza cheza cha ultraviolet, limatha kupanga zoteteza ku kuwonongeka kwa ultraviolet mu dermis. Kuteteza kwa dzuwa pakuwonjezera VC kumakhazikitsidwa mwasayansi ~

4) Limbikitsani kaphatikizidwe ka collagen

Kutayika kwa collagen ndi elastin kumatha kupangitsa khungu lathu kukhala losakhazikika komanso kukumana ndi zochitika zokalamba monga mizere yabwino.

Kusiyana kwakukulu pakati pa collagen ndi mapuloteni okhazikika ndikuti ali ndi hydroxyproline ndi hydroxylysine. Kuphatikizika kwa ma amino acid awiriwa kumafuna kuphatikizidwa kwa vitamini C.
The hydroxylation wa proline pa synthesis wa kolajeni amafuna kutenga nawo mbali vitamini C, kotero vitamini C akusowa kuteteza yachibadwa synthesis wa kolajeni, kumabweretsa ma kukhudzana matenda.

5) Kukonza zotchinga zowonongeka kuti zilimbikitse machiritso a bala

Vitamini C imatha kulimbikitsa masiyanidwe a keratinocyte, kulimbikitsa ntchito yotchinga epidermal, ndikuthandizira kumanganso gawo la epidermal. Choncho vitamini C ali ndi zotsatira zabwino kwambiri pa khungu chotchinga.

Ichi ndi chifukwa chake chimodzi mwa zizindikiro za kusowa kwa michere imeneyi ndi kusachira bwino kwa chilonda.

6) Anti-inflammatory

Vitamini C imakhalanso ndi antibacterial komanso anti-inflammatory effect, yomwe imatha kuchepetsa kulembedwa kwa ma cytokines osiyanasiyana otupa. Choncho, vitamini C nthawi zambiri amagwiritsidwa ntchito ndi dermatologists kuchiza matenda otupa a khungu monga ziphuphu zakumaso.

2, Kodi mitundu yosiyanasiyana ya vitamini C ndi iti?
Vitamini C woyera amatchedwa L-ascorbic acid (L-AA). Uwu ndiye mtundu wa vitamini C womwe umagwira ntchito kwambiri komanso wophunziridwa kwambiri. Komabe, mawonekedwewa amatulutsa okosijeni mwachangu ndikukhala osagwira ntchito mumlengalenga, kutentha, kuwala, kapena pH yapakatikati. Asayansi adakhazikitsa L-AA poyiphatikiza ndi vitamini E ndi ferulic acid kuti igwiritsidwe ntchito muzodzola. Pali mitundu ina yambiri ya vitamini C, kuphatikizapo 3-0 ethyl ascorbic acid, ascorbate glucoside, magnesium ndi sodium ascorbate phosphate, tetrahexyl decanol ascorbate, ascorbate tetraisopropylpalmitate, ndi ascorbate palmitate. Zotengera izi sizikhala ndi vitamini C wangwiro, koma zasinthidwa kuti zithandizire kukhazikika komanso kulolerana kwa mamolekyu a ascorbic acid. Pankhani yogwira ntchito, ambiri mwa mafomuwa ali ndi deta yotsutsana kapena amafuna kufufuza kwina kuti atsimikizire kugwira ntchito kwake. L-ascorbic acid, tetrahexyl decanol ascorbate, ndi ascorbate tetraisopalmitate yokhazikika ndi vitamini E ndi ferulic acid ali ndi deta yambiri yothandizira ntchito yawo.