Cov khoom thiab kev siv ntawm lanolin

Lanolinyog ib yam khoom uas tau rov qab los ntawm kev ntxuav ntawm cov ntaub plaub mos mos, uas tau muab rho tawm thiab ua tiav los tsim cov lanolin refined, tseem hu ua yaj quav ciab.Nws tsis muaj cov triglycerides thiab yog ib qho tso tawm los ntawm cov qog sebaceous ntawm yaj cov tawv nqaij.
Lanolin zoo ib yam nyob rau hauv muaj pes tsawg leeg rau tib neeg sebum thiab tau dav siv nyob rau hauv cov tshuaj pleev ib ce thiab tshuaj pleev ib ce.Lanolin yog refined thiab ntau yam lanolin derivatives yog tsim los ntawm ntau yam txheej txheem xws li fractionation, saponification, acetylation thiab ethoxylation.Hauv qab no yog cov lus qhia luv luv rau cov khoom thiab kev siv ntawm lanolin.
Anhydrous lanolin
Qhov chaw:Ib qho ntshiab waxy khoom tau los ntawm kev ntxuav, decolorizing thiab deodorizing yaj cov ntaub plaub.Cov dej ntsiab lus ntawm lanolin tsis ntau tshaj 0.25% (feem ntau), thiab tus nqi ntawm cov tshuaj tua kab mob yog mus txog 0.02% (feem ntau);EU Pharmacopoeia 2002 qhia meej tias butylhydroxytoluene (BHT) qis dua 200mg / kg tuaj yeem muab ntxiv ua antioxidant.
Khoom:Anhydrous lanolin yog lub teeb daj, oily, waxy khoom nrog ib tug me ntsis tsw.Melted lanolin yog pob tshab los yog yuav luag pob tshab kua daj.Nws yooj yim soluble hauv benzene, chloroform, ether, thiab lwm yam. Nws yog insoluble hauv dej.Yog tias sib xyaw nrog dej, nws tuaj yeem maj mam nqus dej sib npaug li 2 npaug ntawm nws qhov hnyav yam tsis muaj kev sib cais.
Daim ntawv thov:Lanolin yog dav siv nyob rau hauv tshuaj pleev ib ce npaj thiab tshuaj pleev ib ce.Lanolin tuaj yeem siv los ua cov khoom siv hydrophobic rau kev npaj cov dej-hauv-roj cream thiab tshuaj pleev.Thaum sib xyaw nrog cov roj zaub uas tsim nyog lossis roj av jelly, nws tsim cov nyhuv emollient thiab nkag mus rau ntawm daim tawv nqaij, yog li yooj yim rau kev nqus tshuaj.Lanolintov nrog li ob zaug ntawm cov dej tsis sib cais, thiab qhov tshwm sim emulsion tsis tshua muaj rancidify hauv cia.
Cov nyhuv emulsifying ntawm lanolin feem ntau yog vim muaj zog emulsifying lub zog ntawm α- thiab β-diol nws muaj, nrog rau cov emulsifying nyhuv ntawm cov roj cholesterol esters thiab ntau dua cawv.Lanolin lubricates thiab softens ntawm daim tawv nqaij, tsub kom cov dej ntsiab lus ntawm daim tawv nqaij nto, thiab ua raws li ib tug wetting tus neeg saib xyuas los ntawm thaiv qhov poob ntawm epidermal dej hloov.
Tsis zoo li non-polar hydrocarbons xws li ntxhia roj thiab roj av jelly, lanolin tsis muaj peev xwm emulsifying thiab yog ib qho nyuaj absorbed los ntawm stratum corneum, nyob ze rau ntawm absorbing nyhuv ntawm emolliency thiab moisturization.Nws yog tsuas yog siv nyob rau hauv txhua yam ntawm daim tawv nqaij cov tshuaj pleev ib ce, tshuaj pleev, tshuaj pleev thaiv hnub thiab cov khoom siv tu plaub hau, thiab kuj siv nyob rau hauv lipstick kev zoo nkauj tshuaj pleev ib ce thiab soaps, thiab lwm yam.
Kev nyab xeeb:Super muag 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 lanolin hauv cov pejxeem yog kwv yees li ntawm 5%.