Xylanases yog ib chav kawm ntawm glycosidic hydrolases uas catalyze degradation ntawm xylan, feem ntau yog los ntawm cov kab mob xws li Aspergillus niger, Lawv cov haujlwm tseem ceeb yog txhawm rau rhuav tshem -1,4 glycosidic bonds hauv xylan molecule, hloov cov complex polysaccharide rau hauv char xylooligosacide. Xylanases yog ib qho ntawm cov enzymes tseem ceeb hauv xylan tawg, thiab tuaj yeem muab faib ua endoxanthiases thiab exoxanthiases raws li lawv hom kev ua. Endoxanthiases thiab exoxanthiases feem ntau yog qhov txawv ntawm lawv qhov chaw ua haujlwm, hom hydrolysis, thiab cov khoom tseem ceeb.
1. Qhov Chaw Ua Haujlwm
Endoxanthiases: Tawm tsam cov glycosidic bonds nyob rau hauv cov saw ntev xylan, tsis txwv rau qhov kawg.
Exoxanthiases: Ua tsuas yog nyob rau qhov kawg ntawm xylan saw, suav nrog kev txo qis thiab tsis-txo qhov xaus, yam tsis muaj kev cuam tshuam rau hauv- saw saw.
2. Hom Hydrolysis
Endoxanthiases: Randomly tawg intra- saw glycosidic daim ntawv cog lus, ncaj qha faib qhov ntev - saw xylan mus rau ntau qhov luv - saw fragments.
Exoxylanases: Cov enzymes no hydrolyze glycosidic daim ntawv cog lus ua ntu zus los ntawm qhov kawg, maj mam txo cov xylan saw ntev; cov txheej txheem hydrolysis yog tas mus li.
3. Cov khoom tseem ceeb
Endoxylanases: Cov khoom yog xylooligosaccharides ntawm qhov sib txawv ntev, feem ntau yog sib xyaw ntawm xylobiose rau xylohexaose fragments.
Exoxylanases: Cov khoom lag luam feem ntau yog xylobiose thiab xylotriose; Qee cov enzymes tuaj yeem ncaj qha tsim xylose monosaccharides.
Endoxylanases ua raws li "tus pib" ntawm xylan degradation, rhuav tshem qhov nyuaj ntawm qhov ntev - chains thiab tsim ntau qhov chaw ua haujlwm rau exoxylanases. Exoxylanases, ua raws li "terminator," kho qhov degradation ntawm luv luv - saw xylans, txhim kho tag nrho cov hloov pauv ntawm xylan. Tsuas yog los ntawm kev ua haujlwm sib koom ua ke ntawm ob qho tib si tuaj yeem xylan tau degraded tag nrho.
Wuhan Healthdream Biological Technology Co., LTD raws li tus kws tshaj lij enzyme khoom muag nrog ntau tshaj 10 xyoo dhau los, tuaj yeem ua pov thawj ntau qhov sib txawv ib leeg enzyme thiab premix enzyme tov rau koj qhov yuav tsum tau, yog tias muaj lus nug txog enzyme, pls xav tiv tauj peb.