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Preparation of coated granule alkaline protease

包衣微丸型碱性蛋白酶的制备



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ChineseJournalofBioprocessEngineering
Vol.10No.4
Jul.2012
doi:10.3969/j.issn.1672-3678.2012.04.013
OPQI
:2011-05-03
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Preparationofcoatedgranulealkalineprotease
MAJunxiao,ZHANGZanjian,SHIYanlu,LUYanmei,LIUWei
(WeifangKDNBiotechCo.,Ltd.,Gaomi261500,China)
Abstract:Aprocesswasdevelopedforthepreparingofcoatedgranulealkalineprotease.Themethodfor
preparingenzymesolutionincludedfermentation,flocculationsedimentation,filtration,andultrafiltration
bymembrane.Thefinalproductswerepreparedbyproducingacorecontainingenzymesandsprayingthe
coatinglayerontothecoreinafluidbed.Thestabilityanddetergencyofthecoatedgranulewereinvesti
gatedbyacceleratedexperiments,andthecharacteristicsofproductswereevaluated.Themainresults
wereasfolows:theactivityofproteasewasabout426×104U/mLaftercultivatingfor50hin30Lfer
mentor:Thegranulealkalineproteasewascharacterizedbyauniformparticlesizedistribution,ahigh
rateoffinishedproducts,andafreeflowinggranulate(300000U/mL).Whenexposedat37℃ and
75% relativehumidityfor8weeks,thecoatedgranuleretained74% oftheoriginalactivity.Further
more,thedetergencywasbeterthanthatofacommercialproduct.
Keywords:alkalineprotease;coating;detergency;stability
  
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iz9¸G¹ºsB246m
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xã 

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2002,32(5):734740.
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˜åå

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