动态超高压微射流提取对香菇多糖得率、结构及性质的影响

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1、lligh-pressuremicrofluidizafionmaterialsubjecttoaseriesforceinchambersuchasinstantpressurevariationandstrongshearforceacceleratedthesoluteinfiltrationanddiffusionprocess，anddamagedcellstructure，reducedthemasstransferresistance，furtherenhancedpermeabilityanddiffusioneffect．T

2、herefore，ascompared谢mcontrolgroup，DHPMextractionismorelikelytogainhigheryieldofpolysaccharide．3．TheeffectsofDHPMextractiononthephysicalandchemicalpropertiesofpolysaecharidesaleasfollows：DHPMextractiondoesnotaddnewpolysaccharidecomponents，butcausedpolysaccharideparticlesized

3、istributionuneven,apparentviscosityreduced，molecularweightdrops，polysaccharidcdegradationintosmallermoleculeschain；UVspectralanalysisshowedthatDHPMextractionpolysaccharideisnon-proteinbmdingpolysaccharide，Infrared，X-raydiffraction，1HNMRspectra,andCongoredexperimentsshowedth

4、attheDHPMextractionwithomdamagingpolysaccharidestructureandpolysaccharidesolutionconformation．4．TheeffectsofDHPMextractionontheoxidationresistanceofpolysaccharidesareasfollows：compared谢t11controlgroup，becauseofDHPMextactionreducedthemolecularweightofpolysaccharide，gettingbe

5、tterantioxidantcapacitythanthecontrolgroup，andtheeffectofclearinghydroxylradicals，superoxideradical，DPPHfreeradicalsandN02。invitro，increased晰tlltheconcentrateofpolysaccharidesincreasing．Keywords：dynamichigh—pressuremicrofluidizationpretreatment；extractionmechanism；polysacch

6、aride；structureidentification；propertiesV目录目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2香菇多糖研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2．1香菇多糖的结构⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．2．2香菇多糖的理化性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．21．2．3香菇多糖的生理活性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．21．2．4香菇多糖的分离纯

7、化⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．2．5香菇多糖的含量测定⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．51．2．6香菇多糖的纯度鉴定⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．51．2．7香菇多糖的结构鉴定⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．61．2．8香菇多糖的分子修饰⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．81．2．9香菇多糖高级结构与生物活性的关系⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．81．2．10香菇多糖溶液性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯81．3有效成分提取技术研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯91．4香菇多糖提取技术研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯91．4．1溶剂浸提⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．91．4．2超声波