感官與化學(xué)統(tǒng)計(jì)分析技術(shù)剖析白酒風(fēng)味物質(zhì).pdf

1、山東輕工業(yè)學(xué)院碩士學(xué)位論文感官與化學(xué)統(tǒng)計(jì)分析技術(shù)剖析白酒風(fēng)味物質(zhì)姓名：郭兆陽申請學(xué)位級別：碩士專業(yè)：發(fā)酵工程指導(dǎo)教師：李敬龍；熊正河20110601山東輕工業(yè)學(xué)院碩士學(xué)位論文IABSTRACTChineseLiquisatraditionalhisticdistilledspirit.Duetothedifferentrawmaterialproductionprocessarichmixtureofflavacteristicsofl

2、iquhasfmed.Therehasalreadyfmedfourprimarytypes，LuzhouflavMaotaiflavFenflavRiceflavtypeothereightflavtypetomeetpeople’sdifferentrequirements.Fstudyoftheflavacteristicsflavcomponentstraditionalresearchwasmostlybasedonanaly

3、zingdetectingthecontentofthecomponents.Thereareseveralapiasneedingresolved:therelationshipbetweenthearomastrengththeircontenttheactualflavofthecontributionofcomponentstoChineseLiquthekeyflavcomponentofChineseLiqu.Thestud

4、yistopresentbasedontheeffectivedetectionmethodasystematicstudyofthearomaflavliqutocleartheliquaromaacteristicsofChineseLiqu.Studyareasfollows:Acapillarycolumnpackedcolumngaschromatographymethodhasbeenestablishedtodetectc

5、omponentsinChineseLiqu.Withoutpretreatmentsamplewasinjectedintogaschromatographydirectly.LinearresponsesovertheusualconcentrationrangesfthesecompoundsR2valuesabove0.99wereobtainedTheconfidencelimitsfthemeanvaluesrangedat

6、3.5%2.34%(n=5)recoveryratebetween90%to120%.Aquantitativedeterminationpretreatmentmethodfmincomponentstheliquidliquidmicroextractionhasbeenestablished.Liqusampleswillbedilutedtothedegreeofalcohol12%volthen5mLofdilutedliqu

7、weremoveinto10mLcentrifugetubeadd100Lofheptanol(concentrationof274gL)astheinternalstardrapidinjectionof500Ldichlomethane500rpmf1minuteaftertheshockcentrifugef5minutesat5000rpmwithlessonssyringeintothebottomofextractionle

8、t1Lgaschromatography.Materiallinearrange0.05~1.00mgLthelinearcoefficientisabove0.99themethodrepeatabilityRSDbelow15%afterhlingofsamplesf4hourstheRSDofstabilityis15%.Thedetectionlimitofmaterialareat1gLlevel.Thresholdmatte

9、rcontentitsflavistoestablishabridgebetweenthecontribution.ExperimentcomparedtheTSTmethodthe3AFCmethodinthedeterminationofmaterialdifferencesbetweentheolfactythreshold.Experimentalresultsprovethatbothmethodsareclosetothre