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公开(公告)号:US20140273145A1
公开(公告)日:2014-09-18
申请号:US14218720
申请日:2014-03-18
发明人: Martien H. BERGSMA , Anthony R. CALABRIA , Gopal K. CHOTANI , William A. CUEVAS , Gang DUAN , Sung Ho LEE , Ying QIAN , Vivek SHARMA , Jayarama K. SHETTY , Bruce A. STROHM , Paula Johanna Maria TEUNISSEN , Hongxian XU
IPC分类号: C12P5/00
CPC分类号: C12P5/007 , C12N9/2428 , C12P5/026 , C12P19/02 , C12P19/14 , C12Y302/01003
摘要: Embodiments of the present disclosure relate to a process for producing isoprene from a starch substrate by saccharification and/or fermentation. The saccharification is effectively catalyzed by a glucoamylase at a pH in the range of 5.0 to 8.0. At a pH of 6.0 or above, the glucoamylase possesses at least 50% activity relative to its maximum activity. The saccharification and fermentation may be performed as a simultaneous saccharification and fermentation (SSF) process.
摘要翻译: 本公开的实施方案涉及通过糖化和/或发酵从淀粉底物生产异戊二烯的方法。 糖化在pH为5.0至8.0的范围内由葡糖淀粉酶有效地催化。 在6.0或更高的pH下,葡糖淀粉酶相对于其最大活性具有至少50%的活性。 糖化和发酵可以作为同时糖化和发酵(SSF)方法进行。