会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 55. 发明专利
    • PRODUCTION OF OPTICALLY ACTIVE 1,3-BUTANEDIOL
    • JPH03236795A
    • 1991-10-22
    • JP3424990
    • 1990-02-15
    • DAICEL CHEM
    • MATSUYAMA AKIKAZUKOBAYASHI YOSHINORI
    • C12P41/00C12R1/72
    • PURPOSE:To accelerate reaction rate and improve productivity of the title compound by reacting a mixture (BEM) of enantiomers of 1,3-butanediol with a specific microorganism in the presence of an alcohol or ketol. CONSTITUTION:A microorganism such as Candida parapsilosis IFO 1396 bacterial strain having ability capable of asymmetrically assimilating a mixture (BEM) of enantiomers of 1,3-butanediol is inoculated into a culture medium containing glucose, yeast extract, etc., and aerobically cultured at pH3.0-9.5 and 20-45 deg.C for 5-120hr to provide the cultured product (A). Then the ingredient A is blended with 0.1-10wt.% BEM and 0.05-1wt.% alcohol such as ethanol, ethylene glycol or 1-propanol or ketol such as dihydroxyacetone to afford the reaction product liquid (B). Then the ingredient B is reacted at pH3-10 and 10-60 deg.C for 1-120hr to provide the reaction product (C). Then the ingredient C is separated from the bacterial cell and then extracted and purified with column chromatography, etc., to provide the optically active 1,3-butanediol.