Cov Txheej Txheem Ua Tshuaj Pleev Lub Cev Nrog Cov Mis Nyuj Uas Muaj Khoom Noj Qab Haus Huv
Tshuaj pleev ib ce yog ib yam khoom siv rau kev saib xyuas tawv nqaij uas siv ntau tshaj plaws vim nws muaj cov yam ntxwv zoo li no: ua kom daim tawv nqaij noo, ua kom daim tawv nqaij mos, thiab pab kom daim tawv nqaij qhuav thiab tsis ci ntsa iab zoo nkauj. Nyob rau xyoo tas los no, cov tshuaj pleev ib ce uas muaj cov khoom noj khoom haus zoo tau nrov zuj zus. Lo lus "nourishing" txhais tau hais tias cov mis tshuaj uas tsis yog tsuas yog muab cov dej noo ib ntus xwb tab sis kuj "nourish" daim tawv nqaij los ntawm kev sib xyaw ua ke ntawm cov tshuaj emollients, humectants, occlusives, thiab cov khoom xyaw uas pab kho daim tawv nqaij. Tsab xov xwm no tham txog cov txheej txheem ntawm kev ua tshuaj pleev ib ce nrog cov mis tshuaj noj khoom haus, txij li lub tswv yim mis tshuaj, kev xaiv cov khoom xyaw, cov theem tsim khoom, mus rau kev tswj xyuas zoo yooj yim.
1. Nkag Siab Txog Lub Tswv Yim ntawm Cov Tshuaj Nourishing
Cov mis mos feem ntau hais txog ntau yam haujlwm tseem ceeb. Ua ntej, lawv ua kom daim tawv nqaij noo nrog cov tshuaj humectants uas nyiam dej, xws li glycerin lossis sodium PCA. Qhov thib ob, lawv ua kom daim tawv nqaij mos thiab du nrog cov tshuaj emollients xws li cov roj zaub, esters, lossis cov cawv rog. Qhov thib peb, lawv txo cov dej evaporation ntawm daim tawv nqaij siv cov khoom xyaw occlusive xws li petrolatum (rau qee cov mis), dimethicone, lossis lipid-rich butter. Qhov thib plaub, lawv ua kom daim tawv nqaij tiv thaiv nrog cov khoom xyaw xws li ceramides, niacinamide, panthenol, lossis cholesterol (nyob ntawm lub tswv yim khoom thiab lub hom phiaj ua lag luam).
Feem ntau cov tshuaj pleev rau lub cev yog cov tshuaj emulsion, uas yog cov dej thiab roj sib xyaw ua ke nrog cov tshuaj emulsifier. Rau cov mis mos uas muaj txiaj ntsig zoo, qhov nyuaj yog nrhiav kom tau qhov sib npaug ntawm qhov nplua nuj thiab "kev noj qab haus huv" yam tsis txhob hnov tias nplaum dhau, hnyav dhau, lossis yooj yim sib cais.
2. Kev Tsim Cov Khoom Siv: Theem Dej thiab Theem Roj
Cov txheej txheem ntawm kev ua cov tshuaj pleev ib ce feem ntau muab faib ua ntau theem tseem ceeb:
a) Theem Dej
Feem ntau, theem no muaj cov dej deionized/RO, cov tshuaj humectants xws li glycerin, thiab lwm yam khoom xyaw uas yaj tau hauv dej. Hauv cov mis mos uas muaj txiaj ntsig zoo, theem dej feem ntau raug txhim kho nrog cov khoom xyaw uas txhawb nqa kev noo noo mus sij hawm ntev, xws li:
- Glycerin (ua kom daim tawv nqaij mos thiab mos)
- Panthenol (provitamin B5) - pab kho thiab so kom txaus;
- Allantoin (ua kom so)
- Cov tshuaj ntsuab uas yaj tau hauv dej (xaiv tau)
Cov tshuaj nplaum uas ua los ntawm polymer xws li carbomer, xanthan gum, lossis hydroxyethylcellulose kuj feem ntau ntxiv rau kom tsim tau cov qauv tshuaj pleev kom ruaj khov thiab yooj yim siv.
b) Theem roj
Theem no yog "lub hauv paus" ntawm qhov kev xav zoo vim nws yog qhov chaw uas cov tshuaj emollients thiab lipids tseem ceeb nyob. Cov khoom xyaw feem ntau suav nrog:
- Cov roj zaub (roj almond, roj jojoba, roj paj noob hlis)
- Butter (shea butter, cocoa butter) rau cov qauv nplua nuj
– Cov esters sib dua (isopropyl myristate, cetearyl ethylhexanoate) yog li nws tsis hnyav dhau
- Cov cawv uas muaj roj ntau xws li cetyl alcohol los yog cetearyl alcohol kom lub cev mos thiab xis.
– Cov tshuaj ua kom sib xyaw (piv txwv li glyceryl stearate, PEG-100 stearate, ceteareth-20—hloov kho raws li lub tswv yim)
Cov roj ntau dhau yuav ua rau cov tshuaj pleev tuab dua thiab nplua dua, tab sis nws kuj tuaj yeem hnyav thiab nplaum. Yog li ntawd, cov neeg tsim cov tshuaj feem ntau sib npaug cov butters / roj hnyav nrog cov esters sib dua.
c) Theem Txias
Cov khoom siv uas rhiab heev rau cua sov raug muab tso rau tom qab qhov kub poob qis, piv txwv li:
- Cov tshuaj tiv thaiv (nyob ntawm seb lub kaw lus tiv thaiv)
- Tshuaj tsw qab/tshuaj tsw qab (yog siv)
– Niacinamide los yog qee yam khoom xyaw uas ruaj khov dua thaum kub tsawg
- Vitamin E (tocopherol) ua ib qho antioxidant
– Cov khoom xyaw uas "Tau thov" xws li ceramides lossis peptides (nyob ntawm seb puas ruaj khov thiab sib xws)
Hauv theem no, pH kuj raug kho kom haum rau daim tawv nqaij, feem ntau nyob ib puag ncig pH 4,5–6,0 nyob ntawm cov khoom xyaw nquag thiab cov txheej txheem tiv thaiv.
3. Kev Npaj Cov Cuab Yeej thiab Kev Ua Kom Huv Si
Ua ntej pib tsim khoom, kev huv yog qhov tseem ceeb heev. Cov thawv, spatulas, stirrers, homogenizers, thiab beakers yuav tsum tau ntxuav thiab tua kab mob kom huv si. Ntawm qhov ntsuas kev lag luam, CIP (Clean-in-Place) cov txheej txheem thiab GMP cov qauv raug siv. Ntawm qhov ntsuas me me, lub hauv paus ntsiab lus tseem zoo li qub: zam kev ua qias tuaj yeem ua rau cov khoom puas tsuaj sai dua lossis txhawb kev loj hlob ntawm cov kab mob me me.
Cov dej siv yuav tsum yog dej ntshiab (RO/deionized). Kev siv dej los ntawm cov kais dej muaj kev pheej hmoo ntawm cov zaub mov lossis cov khoom tsis huv uas tuaj yeem cuam tshuam rau kev ruaj khov ntawm cov emulsion thiab kev ua haujlwm ntawm cov tshuaj preservative.
4. Theem Dej Kub Theem
Kauj ruam tom ntej yog npaj cov dej. Cov dej raug ntsuas raws li cov mis, tom qab ntawd ntxiv cov tshuaj humectant thiab cov tshuaj thickener. Yog tias siv carbomer, feem ntau nws yuav tsum tau dispersed ua ntej kom tsis txhob lo ua ke. Cov dej ces raug cua sov kom txog li 70–75°C. Kev cua sov pab tau:
- yaj cov khoom uas yaj hauv dej,
- hydrate qee cov thickeners,
- sib npaug qhov kub nrog cov roj theem rau cov txheej txheem emulsification.
Do tas li kom paub tseeb tias cov khoom sib xyaw ua ke zoo ib yam. Nyob rau theem no, cov tshuaj feem ntau tseem yog kua vim tias cov emulsion tseem tsis tau tsim.
5. Theem Roj Cua Sov Theem
Cov roj theem raug ntsuas sib cais thiab cua sov rau tib qhov kub (kwv yees li 70–75°C). Cov emulsifier, fatty alcohol, butter, thiab roj yuav yaj ntawm qhov kub no. Kev cua sov yog qhov tseem ceeb kom ntseeg tau tias txhua yam khoom ntawm cov roj theem yaj tag thiab sib xyaw sib npaug. Yog tias ib qho ntawm cov khoom xyaw tsis yaj tag, cov emulsion muaj kev pheej hmoo muaj cov qauv grainy lossis tsis sib npaug.
Rau cov mis mos uas muaj txiaj ntsig zoo, cov roj feem ntau muaj cov khoom khov xws li shea butter thiab cetyl alcohol. Xyuas kom tseeb tias ob qho tib si yaj tag thiab tawg kom tiv thaiv cov tshuaj pleev kom tsis txhob lo ua cov hmoov.
6. Txheej Txheem Emulsification: Ua ke cov dej thiab cov roj theem
Thaum ob theem sib npaug zos qhov kub, cov txheej txheem emulsification pib. Feem ntau, cov roj theem raug nchuav maj mam rau hauv cov dej theem (lossis rov qab, nyob ntawm lub kaw lus emulsifier) thaum do. Rau cov txiaj ntsig du thiab ruaj khov, siv lub tshuab homogenizer lossis lub tshuab sib tov high-shear rau ob peb feeb.
Qhov no yog qhov uas cov roj emulsion tsim: cov roj me me uas tawg me me hauv dej (rau feem ntau cov tshuaj pleev O/W). Cov khoom sib tov feem ntau pib tuab tom qab emulsification thaum cov qauv emulsion tsim thiab cov thickener pib ua haujlwm.
Cov yuam sij rau kev ua tiav emulsification suav nrog:
- Qhov kub ntawm theem yuav tsum zoo sib xws rau cov emulsifier kom ua haujlwm tau zoo tshaj plaws.
- Qhov ceev thiab lub sijhawm do txaus kom tawg cov roj tee.
- Qhov piv ntawm emulsifier thiab cov roj-dej sib npaug.
7. Maj mam txias thiab ntxiv cov khoom xyaw nquag
Thaum cov emulsion tau tsim lawm, cov khoom sib tov yuav txias thaum do tas li. Qhov kev txias maj mam no pab tsim cov qauv kawg ntawm cov tshuaj pleev, suav nrog cov crystallization ntawm cov roj alcohols, uas muab qhov kev xav du thiab nplua nuj. Thaum kub li ntawm 40 ° C lossis qis dua, cov khoom xyaw txias xws li cov tshuaj preservatives, tshuaj tsw qab, thiab cov vitamins raug ntxiv rau.
Yog tias siv niacinamide lossis panthenol, xyuas kom meej tias lawv sib xws nrog pH thiab sib xws. Piv txwv li, Niacinamide ruaj khov tshaj plaws ntawm pH nruab nrab mus rau me ntsis acidic. Kev hloov kho pH maj mam ua nrog cov kua qaub (piv txwv li, citric acid) lossis alkaline (piv txwv li, sodium hydroxide) thaum ntsuas nrog lub ntsuas pH.
8. Kev Ntsuas Kev Ruaj Ntseg thiab Kev Tswj Xyuas Zoo Yooj Yim
Thaum cov tshuaj pleev tiav lawm, qee qhov kev kuaj xyuas yooj yim tuaj yeem ua tau:
– Tshuaj xyuas seb puas muaj tej yam sib cais ua ntu zus, ua tej daim me me, lossis ua tej daim ua pawg?
- pH: xyuas kom tseeb tias nws yog raws li lub hom phiaj thiab muaj kev nyab xeeb rau daim tawv nqaij.
– Qhov viscosity/texture: yuav tsum sib xws nrog lub tswv yim ntawm cov khoom (lub teeb lossis nplua nuj).
– Kev sim centrifugation (yog tias muaj): kom pom qhov kev nyiam ntawm cov emulsion kom sib cais.
– Kev ntsuas kub: khaws cov qauv ntawm ntau qhov kub sib txawv (piv txwv li qhov kub hauv chav, 40 ° C) kom pom kev hloov pauv hauv ob peb lub lis piam.
– Kev kuaj kab mob me me (qhov zoo tshaj plaws): tshwj xeeb tshaj yog tias cov khoom yuav raug muag. Cov tshuaj tiv thaiv yuav tsum ua haujlwm tau zoo thiab ua tau raws li cov qauv.
Ib qho tshuaj pleev rau lub cev zoo yuav tsum ruaj khov rau tsawg kawg yog ob peb lub hlis mus txog ntau tshaj ib xyoos nyob ntawm seb lub tshuab khaws cia, ntim khoom, thiab kev tu cev ntawm cov khoom siv li cas.
9. Ntim Khoom thiab Khaws Cia
Kev ntim khoom muaj feem cuam tshuam rau qhov zoo ntawm cov tshuaj pleev ib ce. Cov fwj tshuaj pleev ib ce lossis cov raj mis feem ntau huv dua li cov hwj vim tias lawv txo qhov kev sib cuag ncaj qha ntawm tes. Cov ntim khoom kuj yuav tsum sib xws nrog cov mis; qee cov tshuaj tsw qab lossis roj tuaj yeem ua rau cov yas tsis zoo.
Khaws cov khoom no rau qhov chaw txias thiab qhuav, kom deb ntawm qhov kub thiab tshav ntuj ncaj qha. Daim ntawv lo yuav tsum muaj hnub tsim khoom, hnub ua ntau lawm, thiab hnub kwv yees tias yuav siv tau ntev npaum li cas.
10. Xaus Lus
Cov txheej txheem ntawm kev tsim cov tshuaj pleev ib ce uas muaj txiaj ntsig zoo yog kev kos duab ntawm kev sib npaug ntawm cov dej, roj, thiab cov khoom xyaw ua haujlwm kom tsim tau cov emulsion uas ruaj khov, muaj kev nyab xeeb, thiab xis nyob. Qhov tseem ceeb yog xaiv cov khoom xyaw uas txhawb nqa kev kho cov tawv nqaij, siv cov txheej txheem emulsification zoo, thiab tswj hwm kev tswj hwm zoo tas li. Yog tias muaj cov mis zoo, cov tshuaj pleev ib ce uas muaj txiaj ntsig zoo tuaj yeem muab cov txiaj ntsig tiag tiag: daim tawv nqaij yuav mos dua, nyob twj ywm noo noo ntev dua, thiab zoo li noj qab haus huv dua thiab tau txais kev saib xyuas ntau dua raws sijhawm.
Yog tias koj xav tau, kuv tuaj yeem pab koj tsim ib daim qauv mis tshuaj pleev ib ce (hauv feem pua) rau cov tshuaj pleev ib ce uas tsis muaj zog, nruab nrab, lossis nplua nuj, ua tiav nrog rau kev ua haujlwm ntawm txhua yam khoom xyaw thiab qhov kev txiav txim ntawm cov txheej txheem.
