科技文献英文摘要写作.ppt

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1、英文摘要写作一、摘要：是报告、论文内容不加注释和评论的简短陈述。资料性文摘（informativeabstract）一般用来反映科技论文的目的、方法及主要结果与结论，在有限的字数内向读者提供尽可能多的定性或定量的信息，充分反映该研究的创新之处。指示性文摘（indicativeabstract）资料-指示性文摘二、摘要的结构目的(objective)：主要说明本文主要目的、任务、要解决的问题、或研究所涉及的主题范围。方法(method(s))：说明作者的主要工作过程及使用的方法。结果(result(s))：指实验研究的结果、数据、、观察结果、得到的效果性能、

2、被确定的关系等。结论(conclusion(s))：指结果的分析、评价、应用、比较。是这些“结果”的价值、意义与用途，也可以是各种假设或建议。Abstract:Objective:Theimmobilizationconditionsanditsapplicationinsynthesisofsalidrosidewerestudiedbyusingchitosanandsodiumalginateascarrierfortheimmobilizationofβ-glucosidase.Method:Theoptimalconditionsforimmob

3、ilizationwereobtainedthroughorthogonalexperimentsandthesynthesisconditionswereoptimizedwiththeconversionrateasanindex.StudyonSynthesisofSalidrosideUsingImmobilizationβ-glucosidaseResult:Thehighestrecoveryactivityofimmobilizationβ-glucosidase(74.38%)wasobtainedwithchitosanconcentra

4、tionof1.5%,adsorptiontimeof9hours,cross-linkingtimeof12h,glutaraldehydeconcentrationof1.0%andadsorptiontemperatureof0℃.Theresearchonsynthesisreactionconditionsalsoshowedthattheconversionrateofsalidrosidecouldreach71.9%atthepH5.8acetatebuffer/tert-butylalcohol(1:9)systemwhenreactio

5、ntimewas50hours,reactiontemperaturewas50℃,tyrosolconcentrationwas5g/Landsubstratemolarratio(D–glucose/tyrosol)was1:1.Conclusion:TheconversionrateofsalidrosidewasenhancedsothatthispavedthewayforIndustrial-scaleproductionBio-fermentationofmodifiedflavonoidsAbstractAbio-fermentationtec

6、hniquewasusedfortheinvivodiversificationofflavonoidstructuresbasedonexpressioninEscherichiacoliofsixO-methyltransferases(OMTs)fromMenthaxpiperitaandoneO-glucosyltransferase(GT)eachfromArabidopsisthalianaandAlliumcepa.Enzymeswereshowntoberegio-specificininvitroexperimentsandmodifiedabr

7、oadrangeofflavonoidsubstratesatvariouspositions.Usingtheflavonolquercetinasamodelsubstrate,weshowthattheproductspectrumproducedwiththeinvivoapproachisidenticaltothatfoundinvitro.Additionally,usingmixedculturesofE.coliexpressingdifferentclassesofmodifyinggenes(OMTsandGTs),theproductio

8、nofpolymethylatedflavonoidglucosid