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 (creaming) thiab 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. 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 ntau tshaj 1 billion RMB. 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?
Lub ntsiab lus ntawm kev sib cais rog yog qhov nce mus rau kev tsiv teb tsaws thiab coalescence ntawm cov roj dispersed hauv qab 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"?
Hauv kev sib piv rau cov rog, cov protein nyiam "dej". 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 tsis zoo nyob ib ncig 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 (piv txwv li, UHT) 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.
Ob qhov 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.
| 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) | ~8-11 | Cov nroj tsuag fermented -raws li dej haus, tsis tshua muaj pH kam rau ua |
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 ua kom muaj roj sib cais qis dua 2.0 hli thaum lub sijhawm 8-hli lub neej txee.
2 Riam phom 2: Hydrocolloids-Tus "Anti-Sedimentation Net" rau Protein
Hydrocolloids 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, haum rau nruab nrab thiab acidic protein systems.
- Carrageenan: Tshwj xeeb tshaj yog κ-carrageenan, uas tsim ib qho peb -seem network nrog casein micelles; ntawm qhov optimized ntxiv ntawm 0.037%, dej tuav peev mus txog 97.26%.
- Xanthan cov pos hniav: Siab tiv taus ntsev, kua qaub, thiab kub.
- Pectin: Tsim cov gel network hauv cov kua mis acidic kom tiv thaiv kev sib cais theem.
Kev sib xyaw ua ke yog qhov tseem ceeb. Piv txwv li, kev sib xyaw ua ke ntawm 0.19% CMC + 0.27% sodium alginate + 0.15% gum arabic txo qis sedimentation rau 0.24%.
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. Aob -theem homogenizationpom zoo, nrog homogenization siab hloov ntawm 10-35 MPa nyob ntawm hom dej haus.
4 Riam phom 4: Fine pH Regulation-Keeping Proteins Charged
Thaum pH ze rau cov protein lub isoelectric point (nyob ib ncig ntawm 4.5-5.0), sedimentation tshwm sim tau yooj yim. Cov kev tshawb fawb ntawm soluble soybean polysaccharides qhia tau hais tias raws li pH hloov ntawm 3 mus rau 7, kev ruaj ntseg yog qhov tsis zoo ntawm pH 5 thiab zoo tshaj plaws ntawm pH 6-7.
Cov tswv yim tswv yim: Kho dej pH mus rau thaj chaw nyab xeeb deb ntawm qhov chaw isoelectric; ntxiv buffer ntsev (piv txwv li, phosphates, sodium citrate); CITREM (E472c) txhim kho ob qho tib si rog kev koom ua ke thiab protein dispersion hauv acidic media.
5 Riam phom 5: Synergistic Compounding thiab huv si-Label Trends-Tus kws tshuaj ntsuam xyuas
Tsis muaj ib qho khoom xyaw tuaj yeem daws txhua yam teeb meem kev ruaj ntseg.Compound stabilizers (kev sib xyaw)yog tus yuam sij rau kev rhuav tshem kev tuag.
| Hom dej haus | Pom zoo Blend | nyhuv |
|---|---|---|
| Peanut-raws li mis nyuj haus | 0.19% CMC + 0.27% sodium alginate + 0.15% cov pos hniav arabic | Tus nqi sedimentation 0.24% |
| Acid soy mis nyuj haus | 0.1% emulsifier (GMS + sucrose ester) +0.2% CMC+0.2% PGA | ruaj khov rog thiab protein |
| Mis kas fes haus | DATEM + carrageenan / gellan gum + phosphates | Tsis muaj flocculation tom qab siab -kub kom tsis muaj menyuam |
| fermented nroj tsuag -raws li yogurt haus | GMS + xanthan cov pos hniav; CITREM + pectin / gellan cov pos hniav | Cov roj ruaj khov ntawm pH tsawg |
Ntxuav - daim ntawv lo: Citrus fiber tau raug pov thawj tias yog lub ntuj stabilizer, txo sedimentation tus nqi mus rau 0% hauv cocoa- muaj cov mis nyuj haus. Pectin, cov pos hniav arabic, thiab lwm cov pos hniav ntawm cov pos hniav yog maj mam hloov cov hluavtaws emulsifiers kom huv si - daim ntawv lo formulations.
Txoj kev ntsuas kev ruaj ntseg
- Txoj kev centrifugal sedimentation: Kev txiav txim siab sai ntawm sediment pawg.
- LUMiSizer stability analyzer: Siv ze rau - lub teeb infrared los saib xyuas cov sedimentation lossis creaming kinetics.
- Particle loj faib thiab Zeta muaj peev xwm: Ntsuam xyuas dispersion thiab electrostatic stability.
- Rheological tsom xamthiab kev soj ntsuam ntawm kev xav.
Xaus
Dej stability yog qhov sib npaug ntawm physics thiab chemistry. Los ntawm kev xaiv emulsifier thiab kev sib xyaw ntawm qib molecular, mus rau homogenization siab thiab dhau kev tswj hwm ntawm cov txheej txheem, mus rau kev siv lub 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 qib zuj zus.
