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ID:11340546
大小:51.50 KB
页数:24页
时间:2018-07-11
《萃取技术及其在食品工业中的应用(extraction technology and its application in food industry)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、萃取技术及其在食品工业中的应用(Extractiontechnologyanditsapplicationinfoodindustry)1fastandefficientPolarmoleculesintheextractionsolventsamplesandgeneratealotofheatinashorttimeinhighfrequencymicrowavefieldThehigh-speedmovementofpolarmoleculestobreakandweakhydrogenbondshasacceleratedthepenetrat
2、ionoftheionextractionsolventonthesampleTobeseparatedquicklytothecompositionofsolventextractiontimesignificantlyshortened.1.2.2heatingevenlyMicrowaveheatingiscarriedoutbyheatingtheheatingofthematerialtoformauniquewayoftheentiresampleisheatedNotemperaturegradienthastheadvantagesof
3、uniformheatingofthe.1.2.3selectivityInhighfrequencymicrowavefieldforthesmalldielectricconstant,lowdielectriclossmaterialorthemicrowaveincidentcanbesaidIt'stransparent.DuetothedifferentdielectricconstantsofthecompoundswithdifferentMAEsoselectiveheatingFeatures.Thesoluteandsolvent
4、polarityonthegreaterthegreatertheabsorptionofmicrowaveenergytopromotethefasterspeedofextractiontemperatureThedegreeoffornonpolarsolvent,themicrowaveheatingeffectisalmostnot.1.2.4biologicaleffects(nonthermalcharacteristics)Becausemostorganismscontainpolarwatermoleculesinthemicrow
5、avefieldcausedbyintenseTheoscillationiseasytocausethecellmembranestructureofhydrogenbondingbetweenmoleculesiswornthematrixpermeabilitytopromoteelectricshockSolventextractionofsolventandextraction.1.2.5efficientComparedwithotherextractionmethodsoftheMAEcanreducetheconsumptionofth
6、eextractionreagentssuchasMAEforsampleanalysisWhenthegeneralextractionreagentdosageisabout3040mLexergy.MAEcanbeavarietyofsamplesatthesametimeunderthesameconditionstheextractionAtpresent,12samplescanbeextractedatthesametime.Inaddition,wAEcanimplementthetimecontroloftemperatureandp
7、ressureinthecanEnsurethatorganicmatterdoesnotdecomposeduringextraction.Applicationof2MAEtechnologyinFoodChemistryThefoodiscomposedofavarietyofcomponentsofthematerialsmainlyincludewater,carbohydrates,proteinsandlipids,Vitaminsandmineralswerethemostmaterialisapolarmoleculeinthemic
8、rowavefieldcanalsobeheated,Thetemperaturerisedu
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