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ID:32191762
大小:2.20 MB
页数:61页
时间:2019-02-01
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1、StudyOilActiveAromaCompoundsinPuerTeaMajor:TeaScienceCandidate:RuiliLiAdvisor:Prof.HuarongTongABSTRACTPuerteawasalonghistoryofspecialteaofYunnanprovinceinChina.Ithadbeenageographicalindicationproduct.Becauseofitsexcellenthealthbenefitsanditwasmoreandmorep
2、opularinthemajorityofconsumersathomeandabroad.PuerteaprocessingtechnologywasbasedontheYunnanbigleaveSoffreshleavesbyfixing,rolling,dryingandotherprocessesmadegreenmaocharawmaterials,thenheapfermentation,steamingkneading,moldingintovariousshapesofthefinish
3、edproductPuertea.Thechemicalcompositionsoccuredthecomplexchangesintheheapfermentation,especiallyofteaaromacomponents,enzymolysis,oxidationreductionofcatechinsandotherpolyphenols,aswellaswater,heatandacidicconditions,coundcauseorpromotethegenerationofaroma
4、ticcompounds.ThishadbeentheuniquequalitycharacteristicsandhealtheffectsofPuertea.ManyPuertearesearchershadalotofresearchonitschemicaIcompositionanditsvariationlawintheprocess,andrevealeditsrelationshipwithPuerteaquality,butbecauseofthelackofsystematicrese
5、arch,itneededscientistsandPuertealovers’furtherresearchandexploration.PuerteaproductslackedoftheintemationaImarketcompetitiveness。becausethearomawaslowononehand.Ifcoundstrengthentheresearchinthisregard,andidentifiedthatwhatcompoundshadasignificantcontribu
6、tiontoPuerteaaroma.ItwoundbringgreaterdevelopmentofPuerteaproducts.EffectiveUSeSofmodemtechnologywoundexpandthePuerteasales,servicefortheIocaIagriculturaleconomy.Samplepreparationadoptedstaticstateheadspacesolid.phasemicroextraction,anditconcentratedvolat
7、ileorganiccompoundsintypicalrepresentativeofPuerripeteainYunnaninfivedifferentstoragetimes.Bymeansofapreliminaryanalysisbygaschromatography·massspectrometry(GC.MS),forIII西南大学硕士学位论文量寡舅舅量量量曼皇曼曼量皇量曼曼薯量量量曼量量曹皇量曼皇曼量皇篁皇曼皇皇曼曼量量曼量詈量曼曼舅曼量量皇皇鼍鲁皇量皇鼍鲁IIvolatilecompon
8、entsvarietiesandcontentsofthefivepuerripeteas.Gaschromatography-olfactometry(GC—O)analysedaromaactivecompositions·What’Smore,measuringthethresholdsoffivemethoxycompounds,tofurtherdeterminethecontributionofmethoxycom
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