英文食品科技论文写作.ppt

单击此处添加大标题内容Conventionally,fermentationmediumisoptimizedwiththeone-variable-at-a-timemethod,inwhichallvariablesbutoneisheldataconstantlevel,andthentheoptimumlevelofthetestingvariableisdetermined.Althoughthismethodissimple,itislaboriousandtimeconsumingwhentherearemanyfactorstobedetermined.Moreover,itworksif,andonlyifthereisnointeractionbetweenvariables.Responsesurfacemethodology(RSM)isapowerfulandefficientmathematicalapproachwidelyappliedintheoptimizationoffermentationprocess,e.g.mediacomponentsonenzymeproduction(AdinarayanaEllaiah2002;Parketal.2002;Suamantetal.2002),productionofothermetabolites(Zhangetal.1996;Sunithaetal.1998;Sadhukhanetal.1999;Hujanenetal.2001),sporeproduction(Yuetal.1997)andbiomassproductionoptimization(LhommeRoux1991).Itcangiveinformationabouttheinteractionbetweenvariables,provideinformationnecessaryfordesignandprocessoptimization,andgivemultipleresponsesatthesametime.Thepresentworkwasaimedatoptimizationofmediumcomponents,whichhavebeenfoundtoplayaveryimportantroleinenhancingthesporulationoffungus(Larroche1996;Ooijkasetal.1999),withtheaidofRSM.Inthepreliminarystepofoptimization,sixcarbonsources,fiveinorganicnitrogensourcesandsixorganicnitrogensourceswereevaluatedtodetermineoptimalcarbonandnitrogensource.Then,aPlackett–Burmandesignwasusedtoidentifywhichcomponentsofthemediahadsignificanteffectsonsporeproduction.Subsequently,acentralcompositedesignwasemployedtooptimizethefactors,whichhadsignificantinfluenceonsporeproduction.Theresultswereanalyzedbyresponsesurfaceanalysis.二、正文的写法根据文章内容的需要采用各种不同的写作方式展开论述。可以是论证某一命题、观点、假设，或描述某一实验方法、过程、结果，或说明某事物的特点、功能、规律等。类型一：从实验得出结论，并加以讨论。往往是根据目的，设计并做实验，对方法、材料、过程、结果加以描述和讨论，论证是否达到目的。类型二：对已有模型或公式，验证它们的正确性。（1）定义和描述添加标题描述一些物体的外观、结构、原理、过程。添加标题定义的写