資源描述:
《地衣芽孢桿菌發(fā)酵培養(yǎng)基的優(yōu)化》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、安徽農(nóng)業(yè)科學(xué),JournalofAnhuiA.Sei.2009,37(15):6862—6864責(zé)任編輯李菲菲責(zé)任校對況玲玲地衣芽孢桿菌發(fā)酵培養(yǎng)基的優(yōu)化豐貴鵬,楊麗云(新鄉(xiāng)學(xué)院化學(xué)與化工學(xué)院,河南新鄉(xiāng)453o03)摘要[目的]對地衣芽孢桿菌發(fā)酵培養(yǎng)基進(jìn)行優(yōu)化,并在此基礎(chǔ)上確定最佳培養(yǎng)條件,為實(shí)現(xiàn)其工業(yè)化生產(chǎn)提供參考。[方法]借鑒谷春濤等關(guān)于地衣芽孢桿菌TS-I液體培養(yǎng)發(fā)酵條件的研究成果,對培養(yǎng)基進(jìn)行澄清,并運(yùn)用單因素試驗(yàn)和4因素3水平正交試驗(yàn)對其培養(yǎng)基進(jìn)行改進(jìn),對地衣芽孢桿菌發(fā)酵條件進(jìn)行優(yōu)化以得到其最佳溫
2、度、pH值和接種齡。[結(jié)果]4種因素對地衣芽孢桿菌發(fā)酵影響的顯著性次序?yàn)椋河衩诐{>豆餅粉浸汁>蛋白胨>葡萄糖。培養(yǎng)基的最佳配比為:玉米漿0.45g,蛋白胨I.50g,豆餅粉浸汁為1:15,葡萄糖I.50g。最適宜種齡為l8h,接種量8%,起始pH值7.5,最佳溫度37.5℃,此條件下地衣芽孢桿菌對數(shù)生長期在14~20h,發(fā)酵周期為22~24h?;罹鷶?shù)每單位提高近l億個,發(fā)酵周期比經(jīng)驗(yàn)周期縮短10h。[結(jié)論]試驗(yàn)得出了地衣芽胞桿菌發(fā)酵培養(yǎng)基的最佳配比及最佳培養(yǎng)條件,在此條件下培養(yǎng),收獲菌體量大大提高,降低了
3、生產(chǎn)成本,更有利于其大規(guī)模工業(yè)化生產(chǎn)。關(guān)鍵詞地衣芽孢桿菌;發(fā)酵;培養(yǎng)基優(yōu)化;正交試驗(yàn)中圖分類號S182文獻(xiàn)標(biāo)識碼A文章編號0517—6611(2OO9)15—06862—03ResearchontheOptimizationoftheMeditHnforBacilluslicheniformisFermentationFENGGui-pengetal(InstituteofChemistryandChemicalEnginering,XinxiangCollege,Xinxiang,Henan453003
4、)AbstractIObjectiveJ()I1thebasisoftheoptimizationoftheBacilluslichen~fonnisfermentationIn~iuIT1.thebestcultureconditionwasdetemfinedfortherefereflceforⅡ1eimplementationofitsindustrialproduction.{Method10nⅡ1ebasisoftheresldtsfromGuChuntaointheliquidculture
5、fermentationconditionofBacilluslichenrm/s一傅l,thefurthertestoftheculturemediumwasconducted,andtheexperimentinthemediumimproven~ntforbacilluslichenifonniswasdonewiththesingle-factororthogonaltestwith4factorsand3levelsf0roptimumtemperature.pHvalueandageofino
6、culation.1ResultsJ,I11eorderoffourkindsoffactorssignificantlyimpactingthefermentationofBacilluslicheniformiswasasfollows:comjuice>steepliquorfrombeancakepowder>peptone>glucose,andthebestcontaininthemediumwas0.45gtomsteepliquor,1.50gpeptone,theratioofsteep
7、liquorfrombeancakepowderinthemediumof1:15and1.50gglucose.Themostappropriateinoculationagewasl8hours;inoculationamount,8%;theinitialpHvalue,7.5madthebesttemperature,37.5℃;underthecondition,theleg~rithmicgrowthtimeofbaeilluslichenfomfisappe~edfromthel4thto2
8、othhour.a(chǎn)ndthefermentationperiodwas22—24hours.111enumberofviablece[IsperunitwasraisedtoReal"100minioncelsandthecycleofthefermen—tationwasshortenedforI3orethan10hours.ConclusionlThebestBac//luslicheniformisfermentati