欢迎来到天天文库
浏览记录
ID:12362860
大小:25.84 KB
页数:29页
时间:2018-07-16
《食品分析试题库(food analysis question bank)》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、食品分析试题库(Foodanalysisquestionbank)FoodanalysisquestionbankFirst,nouninterpretation1.samples2.steamdistillation3.crudefat4.acidvalue5.nitrogenfreeextract(%)6.sampling7.steamdistillation8.solids9.milkTdegree10.starchgelatinization11.samples12.oligosaccharides13.Tdegrees
2、14.starchmilk15.dietaryfiber16.crudefat17.monosaccharide18.saponificationreaction19.solids20.nitrogenfreeextractives(%)21.sampling22.crudefat23.oligosaccharides24.saponificationreaction25.steamdistillation26.milkdegreeT27.samples28.coarseash29.monosaccharide30.steamd
3、istillationTwo,determinetheerrorcorrectionproblem1.freezedryingreferstothefactthatthesampleisfrozentosolid.()2.samplesafterashingitsweightisconstantweightlessthanorequalto2mg.()3.lactosecanbedeterminedbyreducingsugarmethod.()Theeffectiveacidityisexpressedwhentheconce
4、ntrationofthe4.acidisexpressedastheequivalentconcentration.()5.amylopectinandiodinecanformstablecomplexes.()6.sampleswereoftenaddedwithK2SO4ascatalyst.()7.chloroformmethanolmethodwasusedtoextractfatbydrymethod,andvolumetricmethodwasusedforquantitativedetermination.()
5、8.refractionmethodisaphysicaldeterminationmethodoffatinoilseeds.()9.using75~80%ethanolastheextractionagentofsugarcanpreventthedissolutionofproteinandpolysaccharide.()10.gravimetricdeterminationofpecticsubstances,commonlyusedsodiumcarbonateasprecipitant.()11.organicde
6、structionisamethodofseparatingcomponents.()12.samplesafterdryingtheweightdifferenceisaconstantweightlessthanorequalto2mg.()13.nitrogenfreeextract%=100-(water+crudeprotein+crudefat+ash)(%).()14.vacuumdryingmethodisthebestwaytodeterminethemoisturecontentofspices.()15.a
7、mylopectinandiodinecanformstablecomplexes.()16.KjeldahlmethodisoftenaddedK2SO4ascatalyst.()17.rotatorymethodfordeterminationofstarch,itsopticalrotationangleisthepercentageofstarch.()18.refractionmethodisaphysicaldeterminationmethodoffatinoilseeds.()19.using75~80%etha
8、nolastheextractionagentofsugarcanpreventthedissolutionofproteinandpolysaccharide.()20.theeffectiveacidityreferstotheactivityofhydro
此文档下载收益归作者所有