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1、SeparationofphosphatidylcholinefromsoybeanphospholipidsbysimulatedmovingbedL"ela1./JZhejiangUnivSCIENCEB20067f7).'559—564JournalofZhejiangUniversitySCIENCEB晦SN1673.1581(Print);ISSN18621783(Online)WWW.zju.edu.cn/jzus;ⅥVw.springerlink.comE—mail:jzus@zju.edu.caSeparationofph0sphatidylch0linefromsoy
2、beanphospholipidsbysimulatedmovingbedLOYu—bin,YANGYi—wen,WUPing—dong{(NationalLaboratoryofSecondaryResourcesChemicalEngineering,ZhejiangUniversity,Hangzhou310027,China)'E-mail:lvyubin2001@zju.edu.cn;wupd@zju.edu.caReceivedSept.27,2005;revisionacceptedDec.10,2005559Abstract:Asimulatedmovingbed(SM
3、B),equippedwitheightsilica—gelcolumns,wasusedtoseparatephosphatidylcholine(PC)fromsoybeanphospholipids.TheeffectsofflowrateinSections2(Q2)and3(Q3),switchingtime,feedflowrateandfeedconcentrationontheoperatingperformanceparameters:purity,recovery,productivityanddesorbentconsumptionwerestudied.0per
4、atingconditionsleadingtomorethan90%pufftyinbothoutletstreamshavebeenidentified,togetherwiththoseachievingoptimalperformance.Regionsleadingtocompleteseparationareobservedandexplainedtheoretically.Asthemass-transfereffectwasnotconsidered.thetriangletheoryonlygivesinitialguessesfortheoptimaloperati
5、ngconditions.Keywords:Simulatedmovingbed(SMB),Separation,Soybeanphosphatid),lcholine(PC)doi:10.163l/jzus.2006.B0559Documentcode:ACLCnumber:TQ028.3rNTR0DUCT10NNaturalphospholipids.mainconstituentsofcellmembranes,havemanyimportantbiologicalfunc—tionsforalllivingorganisms.High—purityphos—phatidylch
6、oline(PC),afractionofphospholipids,hasbeenextensivelyappliedasemulsification,stabiliza—tionandwettingagentsinthefieldsofhealthproducts,pharmaceuticals.foodsandindustrialmanufactureofvariousproducts,etc.High—purityPCpreparedbypreparativechro—matographyhadbeenreportedin(Li,2004;AmariandBrown.1990)
7、.Itsinherentshortcomingsarelowloadingamountandhighdesorbentconsumption,whichlcadtohighinvestmentandproductioncost.Simulatedmovingbed(SMB)isacontinuouschromatographiccountercurrentprocessandhasbeenwidelyusedonlargescaleinthep
