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ID:33430077
大小:2.91 MB
页数:75页
时间:2019-02-25
《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》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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
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