Cov khoom thiab daim ntawv thov ntawm lanolin

Lanolinyog ib yam khoom uas tau los ntawm kev ntxuav cov plaub mos mos, uas raug rho tawm thiab ua tiav los tsim cov lanolin uas tau ua kom zoo, tseem hu ua cov quav ciab yaj. Nws tsis muaj cov triglycerides thiab yog cov kua qaub los ntawm cov qog sebaceous ntawm daim tawv nqaij yaj.
Lanolin muaj cov khoom zoo ib yam li tib neeg cov roj sebum thiab tau siv dav hauv cov khoom siv pleev kom zoo nkauj thiab tshuaj pleev ib ce. Lanolin tau ua kom zoo thiab ntau yam lanolin derivatives tau tsim los ntawm ntau yam txheej txheem xws li fractionation, saponification, acetylation thiab ethoxylation. Cov hauv qab no yog kev qhia luv luv txog cov khoom thiab kev siv ntawm lanolin.
Cov lanolin tsis muaj dej
Qhov chaw:Ib yam khoom siv ua roj nplaum uas tau los ntawm kev ntxuav, tshem xim thiab tshem ntxhiab ntawm cov plaub yaj. Cov dej hauv lanolin tsis pub ntau tshaj 0.25% (feem pua ​​ntawm cov khoom loj), thiab cov tshuaj antioxidant yog txog li 0.02% (feem pua ​​ntawm cov khoom loj); EU Pharmacopoeia 2002 qhia meej tias butylhydroxytoluene (BHT) hauv qab 200mg / kg tuaj yeem ntxiv ua antioxidant.
Cov Khoom:Anhydrous lanolin yog ib yam khoom daj daj, roj, thiab zoo li quav ciab uas muaj ntxhiab me ntsis. Lanolin uas yaj lawm yog ib yam kua daj pob tshab lossis yuav luag pob tshab. Nws yooj yim yaj hauv benzene, chloroform, ether, thiab lwm yam. Nws tsis yaj hauv dej. Yog tias sib xyaw nrog dej, nws maj mam nqus dej sib npaug li 2 npaug ntawm nws qhov hnyav yam tsis muaj kev sib cais.
Cov ntawv thov:Lanolin siv dav hauv kev npaj tshuaj pleev thiab tshuaj pleev kom zoo nkauj. Lanolin siv tau ua tus nqa hydrophobic rau kev npaj cov tshuaj pleev thiab tshuaj pleev uas muaj dej hauv roj. Thaum sib xyaw nrog cov roj zaub lossis petroleum jelly, nws ua rau muaj cov nyhuv emollient thiab nkag mus rau hauv daim tawv nqaij, yog li ua rau cov tshuaj nqus tau yooj yim.Lanolinsib xyaw nrog li ob npaug ntawm cov dej tsis sib cais, thiab cov emulsion uas tshwm sim yuav tsis tshua muaj peev xwm rancid thaum khaws cia.
Qhov ua kom emulsifying ntawm lanolin feem ntau yog vim muaj zog emulsifying ntawm α- thiab β-diols uas nws muaj, nrog rau qhov ua kom emulsifying ntawm cov cholesterol esters thiab cov cawv ntau dua. Lanolin ua rau cov tawv nqaij mos thiab mos, ua rau cov dej ntau ntxiv ntawm daim tawv nqaij, thiab ua haujlwm ua tus neeg sawv cev ntub dej los ntawm kev thaiv kev poob ntawm cov dej hloov pauv epidermal.
Tsis zoo li cov roj av uas tsis yog polar xws li cov roj av thiab roj av jelly, lanolin tsis muaj peev xwm emulsifying thiab tsis tshua nqus tau los ntawm stratum corneum, vam khom rau qhov nqus ntawm emolliency thiab moisturization. Nws feem ntau yog siv rau hauv txhua yam tshuaj pleev tawv nqaij, tshuaj pleev tshuaj, tshuaj pleev thaiv hnub thiab cov khoom tu plaub hau, thiab tseem siv rau hauv cov tshuaj pleev di ncauj thiab xab npum, thiab lwm yam.
Kev Nyab Xeeb:Zoo nkauj heevlanolinmuaj kev nyab xeeb thiab feem ntau suav hais tias yog cov khoom tsis muaj tshuaj lom thiab tsis ua rau khaus, thiab qhov tshwm sim ntawm kev ua xua rau lanolin hauv cov pej xeem kwv yees li ntawm 5%.