乳酸菌应用榨菜腌制工艺分析

《乳酸菌应用榨菜腌制工艺分析》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、浙江大学硕士学位论文ABSTRAt：TABSTRACTTheprocessofthetraditionalhigh-saltedpickledmustardiseasytolea。dtohighernitrite，toolongmarinatedtimeandotherunfavorablefactors．Be,tidesexcessiveamountofsaltisawasteofresources．Lacticacidisthemainspecieduringthepickledprocess，whosesafetyhasbeenwidelyrecogni

2、zed．Thepickledvegetableinoculatedlactobacillustechnologyhasbeenmatures．Now,thestudyoflacticacidbacteriainoculatedpickledvegetablesmainlyfocusedontheproductionofPaocai，Thereareveryfewstudiesaboutpickledmustardforartificialinoculationprocess，especiallymustardsalt-dehydrationinZhejiang

3、province．Basedonthis，theauthormakesanin-depthexplorationonthelacticacidbacteriainoculationpickledmustardofZhejiangregion．Inthispaper,thehigh-densitycultureconditionswereoptimizedforthreestI．ainsoflaboratorystrains(D，M，Z)，includinglacticacidbacteriacultureofenvironmentalfactors(tempe

4、rature，pH，inoculumsize)andmediumcomposition(includingcarbonandnitrogensources)．Theoptimizationmadethreestrainsoflacticacidbacteriareached1olocfu／mL．Thethreestrainsoflacticacidbacteriaculturedinhigh-density(numberofM，Z，D)wereinoculatedinthetubermustard．TheresultshowedthatthepHvalue，t

5、henumberoflacticacidbacteriaandnitritecontentweresignificantlybetterthanthecontrolgroups．Thesensoryevaluationorthogonalanalysisidentifiedastheoptinmmtechnology：freshvegetablewithsaltamountwas8kg／100kg，inoculum5mL／Kg，andlactobacillusstrains(Z)waschosed．Thebeststrain(Z)wasinoculatedin

6、thepickledprocessofZhacaiatthelowsaltcondition．LAB(Z)wasinoculatedinthepre-pickleprocess，orboththepre-pickleprocessandthepre-pickleandre-pickleprocess．ThepHvalue，thenumberofL。M3，andthenitritecontentinthepickleprogress，aswellastheaminonitrogenmustardcontentandtheflavorcomponentsofthe

7、finalproductsweredeterminedseparately．Theresultsshowedthat：ForZhacaiinoculatedinthepre-pickleprocessandinoculatedinbothpickleprocess，thepHvaluequicklyreducedto4orless，theIII浙江大学硕士学位论文ABSTRACTnumberof1acticacidbacteriacouldreach107cfu／mL，andnitritepeakvalueappe：ared4-6daysearlierthan

8、thecontrol，whichwas