专业技能英语实训报告.doc

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1、专业技能英语实训报告专业:食品科学与工程班级：131姓名：成玲学号：2013035102StudyonantioxidantactivityofpolysaccharidefromChineseRiceWineinvitroAbstract：TheantioxidantactivityofthepolysaccharidefromChineseRiceWinebyalcoholprecipitationwascontrastedinthepresentstudy.Thetotalantioxidantactivity，DPPHradical，hydroxylradicaland

2、superoxideanionfreeradicalwereselectedastheantioxidantindicatorsinvitroandascorbicacid（VC）asthepositivecontrol.TheresultsshowedthatcrudepolysaccharideandrefinedpolysaccharidefromChineseRiceWinehadantioxidantactivity，andtheantioxidantactivitywasrelatedtoconcentration.Theantioxidantabilityofre

3、finedpolysaccharideintotalantioxidantactivity，removingtheDPPHradicalandhydroxylradicalwasbetterthanthatofcrudepolysaccharide.However，theantioxidantabilityofcrudepolysaccharideinremovingsuperoxideanionfreeradicalwasstrongerthanthatofrefinedpolysaccharide.Keywords：ChineseRiceWine；polysaccharid

4、e；alcoholprecipitation；antioxidant；Chinesericewineistheoldesttraditionalbrewingwine,anditisoneoftheworld'sthreelargestancientwinefullbodied,YellowWinethemellow,softwine.Chinesericewinewithitswonderfulcoloranditsname,withitsuniquetaste,richnutritionanditshealthcarefunctionandknowntotheworld.R

5、esearchshowsthatChineseWinehasantioxidantactivityandantioxidantactivityofsubstancescontainingtheantioxidantactivityandtheYellowWine,suchaspolyphenolsandpeptideetc.Alargenumberofstudieshaveindicatedthatpolysaccharidehasantioxidantactivity.Theyellowricewinecontainspolysaccharides,whetherornoti

6、thasantioxidantactivity,theresearchonthisaspecthasnotbeenreportedinanyreport.Therefore,Shaoxingyellowricewinewasusedasrawmaterial,andthepolysaccharidewasextractedfromtherawmaterials,andtheDPPHfreeradical,hydroxylfreeradicalandsuperoxidedismutasewereextractedbytheinvestigationofthecrudepolysa

7、ccharideandtherefinedyellowricewine.Anionanditstotalantioxidantcapacity,preliminarystudyoftheantioxidantactivityinvitro,whichprovidesscientificbasisforthefurtherresearchandutilizationofyellowricewine.1Materialsandmethods1.1MaterialsandExperimentale