植物乳桿菌ZS2058生物轉(zhuǎn)化共軛亞油酸反應(yīng)體系的研究.pdf_第1頁(yè)
已閱讀1頁(yè),還剩54頁(yè)未讀 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說(shuō)明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)

文檔簡(jiǎn)介

1、江南大學(xué)碩士學(xué)位論文植物乳桿菌ZS2058生物轉(zhuǎn)化共軛亞油酸反應(yīng)體系的研究姓名:許慶炎申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):食品科學(xué)指導(dǎo)教師:陳衛(wèi)陳海琴20080601AbstractAbstractConjugatedlinoleicacid(CLA)isamixtureofpositionalandgeometricisomersoflinoleicacid(Cls:2,c/s一9,c/s12octadecadienoic)CLAhaspoten

2、tialhealthornutritionaleffects,includinganticarcenogenicactivityantiatherogenicactivityandtheabilityteducethecataboliceffectsofimmunestimulationandtoreducebodyfatBetweentheindividualisomersofCLA,c9,t11CLAhasbeenimplicate

3、dasthemostbiologicallyactiveAslacticacidbacteriabioconversionofCLAiSsafeandspecificityhasbeenthefocusofconsiderableresearcheffortsinrecentyearsInthispaperthroughacombinationofthreedetectionmethodsofGc,A礦一HPLCandGCMS,dete

4、rminedthemainproductsofbioconversionofCLAbyrestingcellsofLactobacillusplantarumZS2058werec9,tl1CLA,t10,c12CLAandtt—CLAThemostsuitabledetectionmethodofthesubjectWasGCAccordingtotheproductionofCLA,bioconversionofCLAbyresti

5、ngcellsofLactobacillusplantarumZS2058inpotassiumphosphatebuffersystemWasoptimizedbycomparingwithotherreactionmediumsoftheorganicmedium,micro—watermediumandtwophasemedium374lxg/mLc9tl1一CLAwasobtainedunderthereactioncondit

6、ionasfollows:O8mg/mLLAsolution,4x1010cfu/mLeellmassoptimaltemperature37℃andtheoptimalpHvalue65Conversionratioofc9t11CLAWas4675%Inthispapereffectsofthesubstrateconcentration,cellmass,reactionpHandreactiontemperatureonthee

7、arlyreactionspeedofproducingCLAbyLplantarumzs2058werediscussed。刃船resultsshowedthatmarkedsubstrateinhibitionWaSexist。嬲entheLAconcentrationWas04mg/mL,theearlyreactionspeedofproducingc9,tllCLAreachedthemaximumvalueof1599lxg

8、/(mLh)Theearlyreactionspeedascended塒tllthecellmassincreasingⅥ飛entheeellmaSsof5101。ucfu/mLtheresponserateclosetothemaximumvalueTheoptimumpHandtheoptimumtemperatureofbioconversionofCLAwere65and40℃MilosevicParameterswereobt

9、ainedbvdoublereciprocalplotmethodandHanesW60lfplotmethodThereactionrateequationsoftheinitialresponsestagewereestablishedunderdifferentsubstrateconcentrationThereactionrateequationfollowtheclaSsicMilosevicequationatthelow

10、substrateconcentrationGettheMilosevicParametersWas:Vmax:2174rW/(mLh),Km“016mg/mLMarkedsubstrateinhibitionWasexistedatthehighsubstrateconcentrationButourreactionrateequationofhighsubstrateconcentrationwassignificantdiffer

11、encefromtheclassicresponserateequationofsubstrateinhibitionAtlastthereactionrateequationswereverifiedunderdifferentsubstrateconcentrationKeywords:Lactobacillusplantarum,conjugatedlinoleicacid,linoleicacidisomerase,biocon

溫馨提示

  • 1. 本站所有資源如無(wú)特殊說(shuō)明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒(méi)有圖紙預(yù)覽就沒(méi)有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫(kù)僅提供信息存儲(chǔ)空間,僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請(qǐng)與我們聯(lián)系,我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。

最新文檔

評(píng)論

0/150

提交評(píng)論