非水相中酶促合成L-抗壞血酸棕櫚酸酯及亞麻酸甘油酯.pdf

1、碩士研究生學(xué)位論文新疆大學(xué)論文題目(中文)：論文題目(英文)：非水相中酶促合成L抗壞血酸棕櫚酸酯及亞麻酸甘油酯EnzymaticSynthesisofLascorbylpalmitateandGlyceryllinolenicacid研究生姓名：孫燕學(xué)’科、’專業(yè)：物理化學(xué)研究方向：酶促酯的合成導(dǎo)師姓名職稱：吾滿江艾力研究員賈殿贈(zèng)教授論文答辯B期：2006年6月10日學(xué)位授予B期：2006年月日AbstractOverthepastde

2、cade，nonaqueousenzymologyhasemergedasamajorareaofresearchanddevelopmentinbiotechnologyInordertoexploitrlon‘a(chǎn)queousenzymologyfully，theworkstudiedthevariousfactorswhichaffecttheconversionofreactantofestersynthesisreactioni

3、nnon—aqueoussolventsThemaincontentsareasfollows：1Withaspergillusnigerascatalyst，preferredconditionsforsynthesisofLascorbylpalmitatefrommethylpalmitateandLascorbicacidwerestudiedindetailResultsshowthat，whenmethylpalmitate

4、andLascorbicacidwasmixedatthemolarratioof13：10withdosageof15％methylpatmitateascatalyst，under36。C，underreactionfor24h，Lascorbylpalmitatewasobtainedwithayieldof23％2Theenzymaticesterificationsofglycerolwithlinolenicacidwere

5、carriedoutefficientlyusingNovozym435insolventfreesystemWhenglycerolreactedwithlinolenicacidat60。C，withamolarratioof2：1，catalyzedby1％wet曲toflipaset0linolenicacid。themaximumconversionoflinolenicacidreceived90％3Theenzymatic

6、esterificationsofglycerolwithlinolenicacidwerecarriedoutefficientlyusingNovozym435inorganicsolventsystemWhenglycerolreactedwithlinolenicacidat60℃，withamolarratioof25：1，themaximumconversionoflinolenicacidreceived90％Thecon

7、versionoflinolenicacidhadnodifferenceinfreesolventandorganicsolventbuttheproductsweredifferentintwosystemsFortheformertriaeylglycerolwastheprimaryproduct：forthelatterhowevermono—anddiacylglycerolweretheprimaryproductsKey