杜丽红1*,袁谨怡1,战俊杰2,陈雨新1,王可答1,李杨1,朱璇1,张金凤1
(1.绥化学院生物活性物质研究与应用开发科研团队,绥化152000;2.象屿金谷生化科技有限公司,绥化152000)
关键词:L-酪氨酸;大肠杆菌;发酵工艺
OptimizationofL-TyrosineFermentationProcessbyEscherichiacoli
DULihong1*,YUANJinyi1,ZHANJunjie2,CHENYuxin1,WANGKeda1,LIYang1,ZHUXuan1,ZHANGJinfeng1
(1.ResearchandApplicationDevelopmentTeamforBioactiveSubstances,SUIHUAUniversity,Suihua152000,China;2.XiangyuJinguBiochemicalTechnologyCo.,Ltd.,Suihua152000,China)
Abstract:L-tyrosineisanimportantessentialaminoacid,belongingtothearomaticaminoacid,whichiswidelyusedinmedicine,foodandchemicalindustry.Inthisstudy,usingthegeneticallyengineeredEscherichiacoliTY03strainasL-tyrosineproducingbacteria.Theeffectsofinoculationamount,fermentationtemperature,dissolvedoxygen,fermentationpHvalueandfermentationtimeonL-tyrosineproductionwerestudiedbysinglefactorandresponsesurfaceexperiments,andthesuitablefermentationtechnologywasdetermined.Intheend,thepHwascontrolledat6.8,dissolvedoxygenwas31.2%,thefermentationtemperaturewas35.8℃,undersuchconditionfor24h,theL-tyrosinecontentreached42.0g/L.ThestudydeterminedtheappropriatefermentationprocessofstrainTY03producingL-tyrosine,andprovidedsometheoreticalbasisfortheproductionofL-tyrosinebymicrobialfermentation.
Keywords:L-tyrosine;Escherichiacoli;fermentationprocess
doi:10.3969/j.issn.1674-506X.2024.05-003
收稿日期:2023-10-18
基金项目:黑龙江省教育厅基本科研业务费项目(YWK10236210232);黑龙江省青年人才托举工程项目(2022QNTJ08);黑龙江省自然科学基金项目(LH2022C106)
作者简介:杜丽红(1991-),女,博士,讲师。研究方向:微生物发酵。
*通信作者
引用格式:杜丽红,袁谨怡,战俊杰,等.大肠杆菌产L-酪氨酸发酵工艺优化[J].食品与发酵科技,2024,60(5):16-22.