Abstract
Emulsion stability yog ib qho kev sib tw tseem ceeb uas cuam tshuam rau cov khoom lag luam zoo thiab lub neej txee hauv cov dej haus -kev sib cais cov rog thiab cov protein sedimentation yog ob qho "tua yeeb ncuab" uas teeb meem ntau tus kws tshaj lij R&D. Pib los ntawm cov txheej txheem molecular, tsab xov xwm no delves rau hauv lub hauv paus ua rau ntawm ob qhov teeb meem kev ruaj ntseg, kev tshuaj xyuas cov tswv yim sib xyaw ntawm emulsifiers thiab thickeners, homogenization txheej txheem optimization cov tswv yim, thiab pH cov lus qhia. Nws kuj tseem koom nrog cov kev tshawb fawb thoob ntiaj teb tshiab tshaj plaws thiab kev huv huv - cov npe tiam sis, muab cov kev daws teeb meem los ntawm kev xav mus rau kev xyaum rau cov kws tshaj lij kev lag luam haus dej haus.
Introduction: Sib ntaus sib tua rau ib tug haus dej tshwm sim
Qhib lub raj mis ntawm cov nroj tsuag- raws li cov dej haus protein thiab pom lub nplhaib roj dawb ntab rau saum npoo; tuav lub khob mis nyuj tshuaj yej thiab soj ntsuam qhov tsis kaj siab flocculent sediment nyob rau hauv qab - ob "zoo li killers" no yog cov feem ntau thiab teeb meem tsis zoo teeb meem nyob rau hauv lub lag luam dej haus. Kev sib cais ntawm cov rog thiab cov protein sedimentation tsis tsuas yog cuam tshuam rau cov khoom zoo nkaus li tab sis kuj ncaj qha ua rau cov neeg siv khoom tsis zoo thiab kev muag khoom tsis zoo.
Lub hauv paus muaj pes tsawg leeg ntawm zaub protein lactobacillus haus tsis ruaj khov. Thaum lub sij hawm tsim khoom thiab khaws cia, cov roj ntab feem ntau tshwm sim, thiab nag lossis daus yog qhov yooj yim tshwm sim tib lub sijhawm, ua rau stratification thiab nag lossis daus. Kev ruaj ntseg, raws li qhov teeb meem tseem ceeb hauv kev tsim cov zaub protein lactobacillus dej haus, yuav tsum tau saib xyuas. Ib leeg stabilizers tsis tuaj yeem hais txog cov teeb meem kev ruaj ntseg, thiab kev ruaj ntseg yuav tsum tau txhawb nqa los ntawm co- qauv. Nws tau kwv yees tias txhua xyoo kev lag luam poob los ntawm cov teeb meem kev ruaj ntseg hauv Tuam Tshoj txoj kev lag luam mis nyuj haus muaj ntau heev. Yog li ntawd, kev kov yeej cov dej haus emulsion stability tau dhau los ua "cov chav kawm yuam" rau txhua lub tuam txhab dej haus.
Molecular hauv paus ua rau ntawm ob qhov teeb meem tseem ceeb
1 Fat Separation-Vim li cas cov rog ib txwm nce mus rau saum?
Qhov tseem ceeb ntawm kev sib cais rog yog qhov kev tsiv teb tsaws nce siab thiab coalescence ntawm dispersed fat droplets nyob rau hauv lub ntiajteb txawj nqus. Nyob rau hauv ib qho dej haus tsis ruaj khov, cov roj globules tsis muaj lub zog tiv thaiv kom tsis txhob muaj kev sib tw gravitational stratification, yog li lawv maj mam nce los ua ib qho oily "cream ring" lossis "fat layer" ntawm lub raj mis caj dab. Qhov no tshwm sim tshwj xeeb tshaj yog nyob rau hauv cov nroj tsuag - raws li dej haus vim hais tias cov nroj tsuag rog muaj ib tug loj feem ntawm unsaturated fatty acids, ua rau lawv rhiab heev rau emulsification.
2 Protein Sedimentation- Leej twg tuaj yeem pab Protein "Stand Firm"?
Qhov laj thawj tseem ceeb ntawm cov protein sedimentation yog peb zaug:
- Isoelectric aggregation: Thaum pH ntawm cov dej haus mus txog qhov isoelectric point (pI) ntawm cov protein, cov nqi ntawm cov protein molecules zero, electrostatic repulsion ploj, thiab cov proteins sib sau ua ke thiab nyob. Rau cov kua mis protein, kev ruaj ntseg yog qhov tsis zoo ntawm pH 5.0 thiab zoo tshaj plaws ntawm pH 6-7.
- Thaum tshav kub kub kho thiab mechanical shear: Siab -kub kom tsis muaj menyuam tuaj yeem ua rau cov protein ntau thiab nthuav tawm cov pab pawg hydrophobic, ua rau muaj kev sib sau tsis tau.
- Calcium ion induction: Dawb calcium ions nyob rau hauv lub cev muaj peev xwm choj casein micelles, tsim "ionic txuas hniav" uas ua rau cov protein flocculation thiab sedimentation. Cov kev tshawb fawb tau pom tias ntxiv cov ntsev tsis tuaj yeem txo cov dawb- xeev calcium ions hauv cov kua mis acidic, txo lawv txoj kev khi rau cov protein thiab yog li txhim kho cov khoom ruaj khov.
Ob qho teeb meem no feem ntau tshwm sim ib txhij thiab cuam tshuam nrog ib leeg, yog li ib txoj hauv kev tsis tshua muaj txaus los daws lawv.
Tsib Riam phom tseem ceeb kom kov yeej cov teeb meem kev ruaj ntseg
1 Riam phom 1: Emulsifiers-Tus Khawv koob uas cuam tshuam cov rog sib cais
Emulsifiers yog "kev sib haum xeeb" ntawm dej thiab roj. Lawv cov txheej txheem tseem ceeb yog los txo cov roj -dej interfacial nro thiab tsim ib zaj duab xis tiv thaiv ib ncig ntawm cov roj tee, tiv thaiv coalescence thiab creaming.
Common Emulsifiers:
| Hom Emulsifier | HLB Value | Kev siv tsim nyog |
|---|---|---|
| Glycerol Monostearate (GMS) | ~4-5 | Oat, almonds, kua dej haus |
| Sucrose fatty acid esters (SE) | 7-16 | Cov kua mis acidic |
| Polyglycerol fatty acid esters (PGFE) | 5-13 | Sterilized fermented protein dej haus |
| Lecithin | 4-9 | Clean-label nyiam |
| CITREM (Citric acid esters ntawm mono{0}} thiab diglycerides) | 3-11 (Siv los ntawm qhov chaw) | Haus dej cawv, dej haus cocoa, dej haus chocolate |
Citric thiab fatty acid esters ntawm glycerol (CITREM), raws li tsis yog - ionic zaub mov emulsifier, muaj zog xws li emulsification, dispersion, chelation, antioxidant synergism, anti- starch aging, thiab rog aggregation tswj. Nws tuaj yeem txhim kho emulsion stability ntawm acidic dej haus, dej haus cocoa, thiab dej qab zib chocolate thaum tiv thaiv cov protein los nag. Tus nqi HLB ntawm CITREM feem ntau yog 3 txog 8, qhia tias nws lipophilicity siab dua nws cov hydrophilicity, ua rau nws haum rau stabilizing roj-hauv- dej emulsions.
Hauv cov kua mis acidic, 1: 1 sib xyaw ntawm GMS thiab sucrose esters txhim kho kev ruaj ntseg. Ntxiv PGFE rau sterilized fermented protein dej haus tuaj yeem tiv thaiv kom tsis txhob muaj rog sib cais thiab cov nplaum nplaum tsim thaum lub sij hawm cia.
2 Riam phom 2: Hydrocolloids-Tus "Anti-Sedimentation Net" rau Protein
Hydrocolloid stabilizers ua hauj lwm los ntawm peb lub tswv yim: thickening kom qeeb sedimentation, tsim ib tug spatial network kom tshem tawm cov khoom, thiab hloov kho cov nqi ntawm cov protein.
Feem ntau hydrocolloids:
- Sodium carboxymethyl cellulose (CMC): Feem ntau siv, tuaj yeem tswj lub xeev dispersed ntawm casein micelles hauv cov mis nyuj, yog li txo cov khoom los nag thiab stratification.
- Carrageenan: Tshwj xeeb tshaj yog κ-carrageenan, uas tsim ib qho peb- qhov sib txuas nrog casein micelles, txhim kho kev ncua kev ruaj ntseg.
- Xanthan cov pos hniav: Siab tiv taus ntsev, kua qaub, thiab cua sov, haum rau siab - ntsev los yog siab - kub pasteurized khoom.
- Pectin: Tsim ib lub gel network hauv cov kua mis acidic los tiv thaiv theem sib cais.
- Gellan cov pos hniav: Haum rau RTD cov dej haus protein thiab cov nroj tsuag -cov dej haus, muab kev ncua thiab kev ntxhib los mos yooj.
Kev sib xyaw ua ke yog qhov tseem ceeb.Kev tshawb fawb tau pom tias thaum carboxymethyl cellulose sodium, sodium alginate, thiab cov pos hniav arabic ntxiv ua cov tshuaj stabilizers ntawm 0.19%, 0.27%, thiab 0.15% raws li, cov khoom ua tiav qhov tsawg kawg nkaus sedimentation tus nqi ntawm 0.24%. Qhov loj me me thiab cov txiaj ntsig rheology tau lees paub tias qhov sib xyaw ua kom ruaj khov tswj cov khoom loj me me ntawm cov mis nyuj haus hauv qhov tsawg kawg nkaus (0.1-80 μm) nrog viscosity qis dua ib qho ntawm peb qhov stabilizers.
3 Riam phom 3: Homogenization-Kev Ua Si Lub Cev -Changer
Homogenization lub cev cuam tshuam cov rog globules nyob rau hauv lub siab, ua rau lawv finer thiab txo lawv txoj kev xav sawv. Qhov ntau homogenization dhau, qhov me dua cov roj globule loj, txawm tias tus nqi txo qis nrog txhua qhov dhau.
Cov tswv yim tswv yim:
- Ob-theem homogenization raug pom zoo kom ua kom muaj zog tiv thaiv kev sib cais ntawm cov rog thiab tiv thaiv kev sib cais ntawm whey.
- Homogenization siab yuav tsum tau hloov ntawm 10-35 MPa nyob ntawm seb hom dej haus.
- Cov kev tshawb fawb tau pom muaj kev sib koom ua ke ntawm homogenization siab thiab stabilizer concentration, sib koom ua kom zoo rau lub cev ruaj khov ntawm cov dej haus.
4 Riam phom 4: Fine pH Regulation-Keeping Proteins Charged
Ib qho ntawm cov laj thawj tseem ceeb ntawm cov protein sedimentation yog kho cov dej haus pH ze rau cov protein cov ntsiab lus isoelectric. Thaum pH ze rau cov protein lub isoelectric point (nyob ib ncig ntawm 4.5-5.0), electrostatic repulsion txo qis, ua kom sib sau ua ke thiab sedimentation.
Cov tswv yim tswv yim:
- Kho dej pH mus rau thaj chaw nyab xeeb deb ntawm qhov chaw isoelectric (cov khoom nruab nrab rau pH 6.0-7.0, acidic khoom kom tsis txhob muaj qhov isoelectric point).
- Ntxiv cov ntsev tsis muaj ntsev (piv txwv li, phosphates, sodium citrate) uas tuaj yeem cuam tshuam chelate ionic cuam tshuam zoo thiab txo qis kev sib txuas ntawm cov protein thiab calcium ions.
- CITREM, xws li citric acid esterification- hloov kho emulsifiers, txhim kho ob qho tib si rog kev koom ua ke thiab protein dispersion nyob rau hauv acidic media, ua rau nws tshwj xeeb tshaj yog haum rau fermented nroj tsuag - raws li dej haus.
5 Riam phom 5: Synergistic Compounding thiab huv si -Label Trends
Hauv kev muaj tiag, yuav luag tsis muaj kev daws teeb meem uas tso siab rau ib qho khoom siv los daws txhua yam teeb meem kev ruaj ntseg. Compound stabilizers yog tus yuam sij rau kev rhuav tshem qhov kev tuag.
Ob peb zoo-validated "lub hnub qub ua ke":
| Hom dej haus | Pom zoo Blend | nyhuv |
|---|---|---|
| Dub chokeberry- txiv laum huab xeeb noj mis nyuj haus | 0.19% CMC + 0.27% sodium alginate + 0.15% cov pos hniav arabic | Sedimentation tus nqi 0.24%, particle loj 0.1-80μm |
| Perilla acidic mis nyuj haus | Monoglyceride: sucrose ester=6: 4, tag nrho 0.1% | Qhov zoo tshaj plaws emulsification nyhuv |
| Cov kua mis acidic | CMC + buffer ntsev + monoglyceride / sucrose ester | Tiv thaiv kom txhob muaj rog sib cais thiab cov protein sedimentation |
| Nata de coco acidic mis nyuj haus | CMC + monoglyceride + sucrose ester + sodium citrate | Lub neej ntev txee, zoo stability |
Clean-label trend:
Cov neeg siv khoom xav tau yog tsav kev lag luam mus rau ntuj thiab kev txhim kho kom ruaj khov. Citrus fiber, ua ib qho huv huv - daim ntawv lo- cov khoom muaj txiaj ntsig, tuaj yeem ua kom cov cocoa ruaj khov - cov khoom noj siv mis. Siv lub hauv paus sib xyaw rotatable tsim los ntsuas qhov cuam tshuam ntawm homogenization siab (100-300 bar) thiab citrus fiber ntau nyob rau hauv dej- tuav peev xwm (WHC), sedimentation, creaming Performance index, pH, viscosity, thiab torque, txoj kev tshawb fawb pom tau hais tias nyob rau hauv cov kev mob zoo, citrus fiber ntau 9% thiab viscosity 9%. (197.22 mPa·s), thaum ua tiav 0% sedimentation. Zeta muaj peev xwm (−27.90 mV) thiab particle loj faib (630.53 nm) tsom xam qhia tias citrus fiber txhim kho electrostatic stability thiab txo cov particle aggregation. Citrus fiber, muab rho tawm los ntawm citrus peels, muaj dej zoo heev - tuav lub peev xwm thiab ntuj emulsifying muaj peev xwm, thiab tuaj yeem hloov cov thickeners, stabilizers, thiab emulsifiers kom ua tiav "daim ntawv huv". Kev tshawb fawb ntawm cov neeg siv khoom tsis tu ncua qhia tau hais tias muaj zog txaus rau citrus fiber ntau, nrog 85% ntawm cov neeg siv khoom pom zoo ntawm nws cov khoom muaj nyob rau ntawm cov ntawv sau, lees paub tias nws yog cov khoom muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo.
Txoj kev ntsuas kev ruaj ntseg
Kev kov yeej cov teeb meem kev ruaj ntseg yuav tsum tsis yog tsuas yog optimized formulations thiab cov txheej txheem tab sis kuj yog "qhov muag" los ntsuas qhov ua tau zoo. Cov kev siv feem ntau muaj xws li:
- Txoj kev centrifugal sedimentation: Kev txiav txim siab ceev ceev ntawm cov sediment loj nyob rau hauv siab centrifugal quab yuam.
- Optical tsom xam txoj kev: Cov cuab yeej xws li LUMiSizer stability analyzer siv lub hauv paus ntsiab lus ntawm kev txav mus los ntawm lub zog centrifugal ua ke nrog kho qhov muag nyob ze -infrared nrhiav kom pom txoj kev xav kom ceev ceev cov xwm txheej sib cais xws li sedimentation, ntab, lossis coagulation. LUMiSizer siab-kev daws teeb meem kev sib kis lub teeb pom kev thev naus laus zis tuaj yeem ntsuas cov ntaub ntawv sib cais ncaj qha thiab tiag tiag- lub sijhawm sib cais kinetics, simulating lub txee ruaj khov ntawm emulsion systems.
- Particle loj faib thiab Zeta muaj peev xwm: Ntsuam xyuas dispersion thiab electrostatic stability.
- Cov txheej txheem microstructural thiab rheological tsom xam: Ntsuam xyuas cov txheej txheem cov yam ntxwv los ntawm microscopy, scanning electron microscopy, thiab lwm yam.
Tam sim no muaj xya txoj hauv kev txhawm rau txhawm rau txheeb xyuas qhov ruaj khov ntawm emulsion: txoj hauv kev kho qhov muag, txoj kev them nqi, txoj kev rheological, txoj kev sib tshuam ntawm lub ntsej muag, cov txheej txheem microstructural, siab - ceev centrifugal tsom txoj kev, thiab cov kev soj ntsuam pom. Kev sib xyaw ua ke ntawm ntau txoj hauv kev rau kev hla - kev lees paub yog qhov tsim nyog kom tau txais txiaj ntsig zoo.
Xaus
Haus dej system stability yog ob qho tib si sib npaug ntawm physics thiab chemistry thiab ib qho kev ua si dynamic uas yuav tsum tau ua kom zoo ntxiv. Txawm hais tias nws yog qhov cuam tshuam ntawm kev sib cais ntawm cov rog lossis kev cuam tshuam ntawm cov protein sedimentation, cov qauv kev tshawb fawb sib xws thiab cov kev daws teeb meem sib xyaw muaj nyob.
Los ntawm kev xaiv emulsifier thiab sib xyaw ntawm qib molecular, mus rau homogenization siab thiab dhau kev tswj ntawm cov txheej txheem, mus rau kev siv ntawm ntuj, ruaj khov "huv-label" tshiab stabilizers- tau tsav los ntawm ob qho tib si thev naus laus zis tshiab thiab kev lag luam xav tau, qhov kev sib tw tsis tu ncua ntawm cov dej haus ruaj khov tau raug daws ib kauj ruam dhau los.
