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商品描述
Highpuritydyed,crosslinkedandfinelymilledinsolubleAZCL-Galactan(Potato)foridentificationofenzymeactivitiesinresearch,microBIOLOGicalenzymeassaysand invitro diagnosticanalysis.
Substratefortheassayof endo-1,4-β-D-galactanase.
MeasurementofpolysaccharidedegrADIngenzymesusingchromogenicandcolorimetricsubstrates.
McCleary,B.V.(1991).ChemistryinAustralia,September,398-401.
LinktoArticle
ReadAbstract
Enzymicdegradationofcarbohydratesisofmajorsignificanceintheindustrialprocessingofcerealsandfruits.Intheproductionofbeer,barleyisgerminatedunderwelldefinedconditions(malting)toinducemaximumenzymesynthesiswithminimumrespirationofreservecarbohydrates.Thegrainsaredriedandthenextractedwithwaterundercontrolledconditions.Theamylolyticenzymessynthesizedduringmalting,aswellasthosepresentintheoriginalbarley,convertthestarchreservestofermentablesugars.Otherenzymesactonthecellwallpolysaccharides,mixed-linkageβ-glucanandarABInoxylan,reducingtheviscosityandthusaidingfiltration,andreducingthepossibilityofsubsequentprecipitationofpolymericmaterial.Inbaking,β-amylaseandα-amylasegivecontrolleddegradationofstarchtofermentablesugarssoastosustainyeastgrowthandgasproduction.Excessquantitiesofα-amylaseintheflourresultinexcessivedegradationofstarchduringbakingwhichinturngivesastickycrumbtextureandsubsequentproblemswithbreadslicing.Juiceyieldfromfruitpulpissignificantlyimprovedifcell-walldegradingenzymesareusedtodestroythethree-dimensionalstructureandwaterbindingcapacityofthepecticpolysaccharidecomponentsofthecellwalls.Problemsofroutineandreliableassayofcarbohydratedegradingenzymesinthepresenceofhighlevelsofsugarcompoundsareexperiencedwithsuchindustrialprocess.
