nkhani

Mutha kudziwa pang'ono za kojic acid, koma kojic acid ilinso ndi achibale ena, monga kojic dipalmitate. Kojic acid dipalmitate ndiye wotchuka kwambiri wa kojic acid whitening wothandizira pamsika pano. Tisanadziwe kojic acid dipalmitate, tiyeni tiphunzire za omwe adatsogolera - "kojic acid".
Kojic Acidamapangidwa ndi nayonso mphamvu ndi kuyeretsa shuga kapena sucrose pansi pa zochita za kojise. Njira yake yoyera ndiyo kuletsa ntchito ya tyrosinase, kuletsa ntchito ya N-hydroxyindole acid (DHICA) oxidase, ndikuletsa polymerization ya dihydroxyindole (DHI). Ndi chinthu chosowa choyera chomwe chimatha kuletsa ma enzyme angapo nthawi imodzi.

Koma asidi wa kojic ali ndi kusakhazikika kwa kuwala, kutentha ndi chitsulo, ndipo sikophweka kutengeka ndi khungu, kotero kuti zotumphukira za kojic acid zinayamba kukhalapo. Ofufuza apanga zinthu zambiri zochokera ku kojic acid kuti kojic acid igwire bwino ntchito. Zochokera ku Kojic acid sizimangokhalira kuyera ngati kojic acid, komanso zimakhala ndi ntchito yabwino kuposa kojic acid.
Pambuyo pa esterification ndi kojic acid, monoester ya kojic acid ikhoza kupangidwa, ndipo diester ikhoza kupangidwanso. Pakadali pano, kojic acid yoyera kwambiri pamsika ndi kojic acid dipalmitate (KAD), yomwe ndi yochokera ku kojic acid. Kafukufuku akuwonetsa kuti kuyera kwa KAD kophatikizidwa ndi zotumphukira za glucosamine kudzachulukirachulukira.

Kusamalira khungu kothandiza kwa kojic dipalmitate
1) Whitening: Kojic acid dipalmitate imakhala yothandiza kwambiri kuposa kojic acid poletsa ntchito ya tyrosinase pakhungu, motero imalepheretsa kupanga melanin, yomwe imakhala ndi zotsatira zabwino pa khungu loyera ndi dzuwa.
2) Freckle kuchotsa: Kojic asidi dipalmitate akhoza kusintha pigmentation khungu, ndipo akhoza kulimbana ndi mawanga zaka, Tambasula, mawanga ndi pigmentation ambiri.

Dipalmitate cosmetic compounding guide
Kojic asidi dipalmitatendizovuta kuwonjezera pa fomula komanso zosavuta kupanga mpweya wa crystal. Pofuna kuthana ndi vutoli, tikulimbikitsidwa kuwonjezera isopropyl palmitate kapena isopropyl myristate ku gawo lamafuta lomwe lili ndi kojic dipalmitate, kutentha gawo lamafuta mpaka 80 ℃, gwirani kwa mphindi 5 mpaka kojic dipalmitate itasungunuka kwathunthu, kenako onjezerani gawo lamafuta gawo la madzi, ndi emulsify kwa mphindi 10. Nthawi zambiri, pH ya chinthu chomaliza chomwe chapezeka ndi 5.0-8.0.
Mlingo wovomerezeka wa kojic dipalmitate mu zodzoladzola ndi 1-5%; Onjezani 3-5% pazinthu zoyera.