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ID:36584183
大小:3.36 MB
页数:61页
时间:2019-05-12
《近红外光谱技术在鱼丸品质检测中的应用研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海海洋大学硕士学位论文近红外光谱技术在鱼丸品质检测中的应用研究姓名:罗阳申请学位级别:硕士专业:食品科学指导教师:王锡昌20081113上海海洋大学硕一l:学位论文3)鱼丸中蛋白质模型的建立:本试验中,蛋白质模型的预测效果较差,定标集和验证集的相关系数都在0.9以下。4)鱼丸弹性模型的建立:试验表明,一次压缩法得到的弹性测定值与NIRS值之间的相关性优于二次压缩法,其最佳模型定标集和验证集的相关系数都在0.96以上,接近0.97.RPD值大于4。5)鱼丸感官模型的建立:利用LDA线性判断法建立鱼丸好坏的感官判别模型,对于感官品质最好和最坏的样品,具有很好的识别效果,识别率达Nloo%
2、。本试验首次对鱼丸的品质进行了NIRS分析,并且建立了三个效果较好的模型,即鱼丸中水分、淀粉和弹性的模型。通过T检验,也发现这三个参数的NIRS测定值和传统方法测定值之间没有显著性差距,表明利用NIRS分析技术对鱼丸的这三个指标进行快速测定具有现实可行性。关键词:近红外光谱技术,鱼丸,品质分析,定标模型ⅡJ:海海洋大学硕上学位论文ApplicationofNearInfraredSpectroscopyTechnologyinFishballQualitiesInspectionAbstractBecauseofthehi曲speeddevelopmentofChineseeconom
3、yandtheentranceofChineseproductionontheinternationalmarket.Studyanddevelopqualityinspectiontechnologyofaquaticproducts,especiallysurimi—basedproductsbecomesmoreandmoreimportantinChina.Century.Beingcapableofmakingnondestructive,rapid,highefficient,convenientandmeasuredmorecomponentsatonetime,NIRS
4、techniquehasbeenusedinmanyfields.Anditisoneofanalyticaltechniquewhichhasmaderapidprogressatpresent.Asthemosttypicalandfavoritesurimi-basedproduct,thenewinspectiontechnologyoffish-ballshasimportantpracticalsignificanceandwouldalsodrivethetechnologicalinnovationofsurimi—basedproductfieldeventhewho
5、leaquaticproducts.砌sprojectwastomeasuremoisture,starchandproteininfish-ballsbynationalnormalmeasurementsthenexploretheNIRSanalysis.SampleswerescannedattheNIRSregion10000cm。1·4000cm-'.Thecalibrationmodelsforeachcomponentwereconstitutedbyusingdifferentwave-number,spectroscopypretreatmentandregress
6、ionmethodsaccordingtoNIRScharactersoffish—balls.Sciencespringinessthatdependsonchemicalcomponentsisthemostimportantphysicindextodescribefish-ballsquality.Basedonthequantitativemodels,theresearchalso仃iedtoestablishthecalibrationmodelsofspringiness.Inthisstudytwomethodswereselectedtoevaluatespring
7、inessoffish-ballsusingtextureinordertofindwhichoneismuchbettertobeinterrelatedwithNIRSvalue.ThisresearchalsostudiedthefeasibilityofNIRStopredictthesensoryqualityoffish-balls.Thesensoryscoreswereusedtoestablishthecalibrationm
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