番茄紅素高效提取與濃縮工藝的研究.pdf

1、江南大學(xué)碩士學(xué)位論文番茄紅素高效提取與濃縮工藝的研究姓名：劉澤龍申請學(xué)位級(jí)別：碩士專業(yè)：食品科學(xué)指導(dǎo)教師：張連富20080801AbstractAbstractFortheproblemsintraditionalextractionandpraperationofliposolublenaturalpigments，suchaslowextractingefficiencyandsolventexistedinpigmentprodu

2、cts，severalrelevantmodemtechniqueswereinvestigatedinlycopene(atypicalliposolublenaturalpigment)extractionandpreparation，tosievedmoreeffectiveandeffecientappliedtechniquesUltrasoundassitedextractingmethod(UAE)，ultrahighpr

3、essureextractingmethod(UHPE)andultrasound／microwaveextractingmethod(UMAE)wereselected，andcomparedwithconventionalextractingmethod(CE)onthelycopeneyieldTheoptimalconditonsofthesefourextractingmethodswereshowedasfollows：CE

4、：theextractingtemperatureWas873℃theratioofthesolventstotomatopastewasl08：1(v／w)andtheextractingtimeshouldbe65min；UAE：theextractingtemperatureWas864℃，theratioofthesolventstotomatopastewas8O：1(v／w)andtheextractingtimeshoul

5、dbe291min；UHPE：extractionpressure168MPatemperatureofpressuremediumWas40℃，extractiontimewasabout2Stheratioofthesolventstotomatopastewas176：1andthenumberofextractionstagewas3；UMAE：98Wmicrowavepowertogetherwith40KHzultrason

6、icprocessing，theratioofsolventstotomatopasteWasl06：l(v／w)andtheextractingtimeshouldbe367SUndertheseconditionsthepercentagesoflycopeneyieldwere947％，894％，94，5％and974％respectivelyAftercomparisonofthesefourtechniques，results

7、impliedthatUMAEWasfarmoree伍cientthanotherextractingmethodsAnultrasonic／microwaveassistedextractionequipmentwasdesignedastheindustrialfacilityandainitialmasstransfermodelforUMAEmethodWasdeveloped，basedonFick’Ssecondlawtos

8、imulateandelucidatethespecificprocessoflycopeneextractionFortheobjectiveofobtainingfreesolventtomatooleoresin，moleculardistillationWasselectedtoenrichlycopenefollowedbymethylesterification，afterremovingthebulkofsolventin

9、extractsbyvacuumevaporationCentralcompositerotarydesignandresponsesurfacemethodology(RSM)wereusedtobuildapredictivemodelofthecombinedeffectsofmoleculardistillation’Sindependentvariablesincludingevaporatingtemperature，fee

10、dflowrateandwiperrollingspeedfortherecoveryoflycopenefromesterifiedtomatooilTheoptimumoperatingconditionsobtainedfromtheRS：Mmodelswereevaporatingtemperature108112℃，condensingtemperatrue35。C，wiperrollingspeed180r／min，feed

11、flowrate5255g／hwhenfeedtemperature60℃andvacuum3PaUndertheseconditions，freesolvent&hi曲lycopenecontentproductWasobtainedKeywords：Lycopene，tomato，ultrasoundassitedextraction，ultrahighpressureextraction，ultrasound／microwavea