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TheAmylaseSDMethodisahighlysensitivecolourimetricmethodforthedeterminationofα-amylaseinsproutdamagedwheatgrain(alsoknownaspre-harvestsproutingorweatherdamagedwheatgrain)and“latematurityα-amylase”wheatgrain.Canalsobeusedformeasuringα-amylaseinconfectionery,softdrinks,brewingandfermentation,jams,sauces,conserves,icecreamandbabyfood.
Suitableformanualandauto-analyserformats.
Arapid,automatedmethodformeasuringα-amylaseinpre-harvestsprouted(sproutdamaged)wheat.
InvestigationintotheuseoftheamylaseSDassayofmilledwheatextractsasapredictorofbakedbreadquality.
Novelassayproceduresforthemeasurementofα-amylaseinweather-damagedwheat.
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AOACMethod2002.01
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AACCMethod22-02.01
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ICCStandardNo.303
Highlysensitivecolourimetricmethodforthedeterminationof
α-Amylaseinsproutdamagedgrainandfoodproducts
Principle:
(α-amylase)
(1)Ethylidene-G7-α-PNP+H2O→Ethylidene-GX +G(7-X)-α-PNP
(Thermostableα-glucosidase)
(2)G(7-X)-α-PNP+H2O→D-glucose+PNP
(alkalinesolution)
(3)PNP→phenolateion(yellowcolour)
Note: PNP=4-nitrophenol
Kitsize: 160/320assays(manual)/640(auto-analyser)
Method: Spectrophotometricat400/405nm
Totalassaytime: ~5min
Detectionlimit: 0.05U/mL
Applicationexamples:Sproutdamagedwheatgrainandfoodproducts
suchasjamsaucesconservesandicecream
Methodrecognition: AOAC(Method2002.01)AACC(Method22-02.01)
andICC(StandardNo.303)
Advantages
- Extremelyhighsensitivity-2.4-foldincreaseoverCeralpha(K-CERA)
- Verycosteffective
- Allreagentsstablefor>2yearsafterpreparation
- Veryspecific
- Simpleformat
- Mega-Calc™softwaretoolisavailablefromourwebsiteforhassle-freerawdataprocessing
- Standardincluded
- SuitableforManualandauto-analyserformats