胃蛋白酶
研究报告
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measurementwiththeFolin phenolreagent[J].Journalof
EffectofPepsinControlledHydrolysisonEmulsifyingCapacityof
SoybeanProteinIsolates
YuanBo en,LuoDong hu,iZhaoMou ming,CuiChun
(CollegeofLightIndustryandFoodSciences,SouthChinaUniversityofTechnology,Guangzhou510640,China)
ABSTRACT Inthisstudyweusedpepsintohydrolyzethesoybeanproteinisolates,andobtainedaseriesofhydrol ysate.Wealsostudiedthesolubilityandtheeffectsofdifferentstoreconditions,suchasnormaltemperaturestorage,icestorageandfreezestorageontheemulsifyingcapacityofSPI.Asaresul,tsolubilitycanbeenhancedbypepsin
hydrolysis,and5histhebesttimeframe.Moreover,emulsifyingcapacitycanalsobeenhanced,atnormaltempera turethedropletsizedistributionshowedaupwardtrendatfirstandthenshowedadownwardtrendwiththetimeexten sion.Theabilityofanti FreezeandThawisbetterasthetimeextended.Keywords SPI,pepsin,solubility,dropletsizedistribution,emulsifyingcapacity(上接第15页)
IsolationandIdentificationoftheFibrinolyticEnzymeProducing
StrainandItsGrowthModel
LiuCai ping,CuiTang bing
(CollegeofBiologyScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China)
ABSTRACT Inthisresearch,fifty ninestrainsproducingfibrinolyticenzymeweresuccessfullyisolatedfromninekindsofDouchibyusingcaseininplateatfirstandsecondlybybothfibrinplatesandplasmaplates,andtheoneDC
YJ11wasthehighestfibrinolyticenzymeproducingstrain.ItwasidentifiedasBacillussubtilisbymorphologica,lbio chemica,lphysiologicalcharactersanalysis,and16SrDNAsequenceanalysis.Thisstudyalsoconstructedaphyloge netictreeandestablisheditsgrowthmodelbasedonBPNeuralNetwork.Keywords Bacillussubtilis,fibrinolyticenzyme,identification,BPNeuralNetwork
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