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1、華中農業(yè)大學2014屆碩士研究生學位論文miscanthus>waterpeanut>metasequoiachips．Inanyofthecellulaseloadings(7—200FPU／gcellulose)，cellulosefrommetasequoiachips、^，itllthehighestcrystallinityindexhadtheminimumreducingsugaryield(20—60∥1009)，meanwhile，thesugarcanebagassecellulose謝tllthelowestcrys
2、tallinityindexhadthemaximumreducingsugaryield(>85．72g／1009)．Thehigherthecrystallinityindexwas，thehigherdegreeofcrystallizationwouldbe，andthemoredifficultthecombinationofenzymeandcelluloseWas，leadingtoalowercelluloseconversionandalowerreducingsugaryield．Anobviousnegativeco
3、rrelationbetweenCrIandhydrolysisyieldwasobtained、析tllthelinearcorrelationcoefficientRashighasO．9828，atsufficientlyhighenzymeloadingsof140and200FPU／gcellulosewheretheenzymeavailabilitywasnotalimitingfactorofthehydrolysisreaction．(3)Itwasfoundthatthecrystallinityindex(CrI)o
4、fplantcelluloseplayedagreaterrolethandegreeofpolymerization(DP)andspecificsurfacearea(SSA)did，inenzymehydrolysisbythemultiplelinearregressioncorrelationequationfittingbetweenthereducingsugaryield(Ⅵandstructuralcharacteristics(CrI，DP,SSA)，meanwhile，theDPandSSAonlypresented
5、aminordegreeofpositivecorrelation、析tllthereducingsugaryield，thushadaminorinfluenceonthehydrolysisofplantcelluloses．TheinfluenceofstructuralcharacteristicsonenzymatichydrolysisWasintheorderofCrl>DP>SSA．Thispointstothepotentialadvantagesinpracticalapplicationofutilizingwate
6、rhyacinthasfeedstockforbio—ethanolproductionasithasrelativelylowCrIandrelativelyhighSSA．Whenwaterhyacinthisappliedtoenzymatichydrolysis，itCannotonlyreducethecostofenzymereagentaswellasthecostofbio-ethanolproduction,butalsocontroltheaquaticenvironmentalproblems．(4)Differen
7、tintensityofphosphoricacidandmicrowavepretreatmentswereemployedtowaterhyacinthcelluloseseparatedbyethanol—nitratemethodinordertochangeitsstructttralfeature．TheSSAofthepretreatedmaterialsdecreasedsignificantly,andthereducingsugaryieldsofthesematerialswerealsolowerthanthose
8、ofuntreatedcellulose．Therefore，waterhyacinthcelluloseseparatedbyethanol—nitratemethoditselfwasal
