米渣蛋白改性和改性产物的乳化性与应用的.研究

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1、Abstractstabilities，dissolutioncharacters，surfacetension,considerationandgranularitygaussiandist玎'bufionwasstudiedwiththeRiceResiduesProteinDH3,4，5，6，10whichwaslimitedenzymatichydrolyzedbyAlcalase2．4LFGItcouldbeeasily5tenfromtheinvestigationresultthatriceresiduespro

2、teinwithlimitedenzymatichydrolyzedhadmuclibetteremulsificationcharacteristicsthanriceresiduesprotein．AndtheemulsificationactivityofthericeresiduesproteinDH4wasbetterthansodiumcasein,buttheemuisificationstabilityatittleworsethanit．Inaword,thericeresiduesproteinDH4had

3、averygoodemulsificationcharacteristic．4．DeterminedmolecularweightdistributionoflimitedenzymatichydrolyzedriceresiduesproteinwithdifferentDrl,distributionrangewasfrom80Dato15KDa．whilethehydrolysisdegreeincreasing,morelowmolecularweightappeared．whileDH=Io．themolecular

4、weightWasmainlyat692Da,theratioreached94．76％．Be虻au．鸵therewerechieflymicromoleculepeptideoramiuoacidinDHl0,andlowermolecularwaswithWOI'Seflexibility。yetthehydrolysisproductionofDHl0waswithlowemulsificationproperties．Thehigh龉temulsificationhydrolysisproductionofDH4pos

5、sesedamoleculardistributionrangewith43．17％atMw=2233Daand50．17％atMw--441D乱5．ThcfactorssuchaslimitedenzymatichydrolyzedriceresiduesproteinofdifferentDH,di彘rentsubs．trateratiotothemaltdextrin,reactiontemperature,reaction瞳andreactiontimewhichaffecttheMaillard’Sreactionk

6、ineticswerediscussed．ResponsesurfacemethodologyWasusedtooptimizeMalllard’Sreactionfactors．inordertogettheMaillardconjugation丽ththehighestemulsificationactivities．ncresultsindicatedthat：theDH6，theweightratioofRRHPtoMD8：1，temperature58℃，pH6．5，andreactiontime3daysweret

7、heoptimumreactionconditions．Withintheseconditions．theactualemulsificationactivitiesvalue(EAI=0．3170)Washigherthansodiumcasein(EA／--0．2695)．6．Thcspectraoflimitedenzymatichydrolyzedriceresiduesprotein--maltdextrinMaillardconjugationWasdeterminedbyFⅢtspectrometry．neabs

8、orptionpeaksofthespectrawereanalyzed．ResultsfromthecomparisonofthethreespectrashowedtheSpectraofMaillardconjugationpossessednotonlyamidech