发酵法生产D-乳酸的研究进展-豆柴文库

您所在位置：网站首页 / 发酵法生产D-乳酸的研究进展.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

发酵法生产D-乳酸的研究进展
Title:AdvancesinFermentationMethodsforD-LacticAcidProduction
Abstract:
D-lacticacidisanimportantchemicalcompoundusedinvariousindustries,includingfood,pharmaceuticals,andbioplastics.ThispaperaimstoreviewtherecentadvancementsinfermentationmethodsforD-lacticacidproduction.Thefocuswillbeondifferentmicrobialstrainsemployed,processoptimization,andgeneticengineeringapproachestoenhanceD-lacticacidyields.ThepotentialchallengesandfutureperspectivesofD-lacticacidfermentationwillalsobediscussed.
Introduction:
D-lacticacidisavaluablechemicalcompoundwithawiderangeofapplicationsduetoitschiralityandstability.Itiscommonlyusedintheproductionofbiodegradablepolymers,suchaspolylacticacid(PLA),whichexhibitsexcellentbiocompatibilityandisconsideredasustainablealternativetoconventionalplastics.Furthermore,D-lacticacidhaspotentialapplicationsinthepharmaceuticalindustry,whereitcanbeusedasabuildingblockfortheproductionofdrugintermediates,insecticides,andherbicides.
FermentationMethodsforD-LacticAcidProduction:
1.MicrobialStrains:
VariousmicrobialstrainshavebeenexploredforD-lacticacidproduction,includingLactobacillus,Bacillus,andEscherichiacoli.Lactobacillusrhamnosus,Lactobacillusdelbrueckii,andLactobacillusplantarumarecommonlyusedduetotheirabilitytoproducehighyieldsofD-lacticacid.Thesestrainscanefficientlyfermentglucose,sucrose,orothercarbohydratesourcestoproduceD-lacticacid.However,issuessuchaslowgrowthratesandsusceptibilitytocontaminationneedtobeaddressedtoimproveprocessefficiency.
2.ProcessOptimization:
SeveralprocessparameterscanbeoptimizedtoenhanceD-lacticacidproduction.Theseincludesubstrateconcentration,pH,temperature,aeration,andagitation.MaintaininganoptimalpHandtemperaturerangeensuresthegrowthandmetabolismofselectedmicrobialstrains.Aerationandagitationinfluenceoxygenavailability,mixing,andmasstransfer,whichaffectcellgrowthandproductformation.Additionally,optimizationofcarbonandnitrogensourcesinthefermentationmediacansignificantlyimpactD-lacticacidyield.
3.GeneticEnginee