Heterologous expression of an Aspergillus kawachi acid-stable alpha amylase and applications in granular starch hydrolysis
    6.
    发明授权
    Heterologous expression of an Aspergillus kawachi acid-stable alpha amylase and applications in granular starch hydrolysis 有权
    河曲酸稳定α淀粉酶的异源表达和在淀粉水解淀粉中的应用

    公开(公告)号:US07205138B2

    公开(公告)日:2007-04-17

    申请号:US11347886

    申请日:2006-02-06

    IPC分类号: C12N9/28 C12N9/34 C07H21/04

    摘要: The present invention relates to a granular starch hydrolyzing enzyme composition comprising an acid stable alpha amylase (asAA) having granular starch hydrolyzing activity. The invention also relates to a one-step method for producing an alcohol which comprises contacting a granular starch substrate with an acid-stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity and a glucoamylase (GA) in a fermentation step which also comprises ethanologenic microorganisms at a temperature of 25–40° C. to obtain a fermentation broth having 5 to 20% ethanol.

    摘要翻译: 本发明涉及含有具有淀粉淀粉水解活性的酸稳定性α淀粉酶(asAA)的粒状淀粉水解酶组合物。 本发明还涉及一种生产醇的一步法,该方法包括在发酵步骤中使颗粒淀粉基质与具有颗粒状淀粉水解(GSH)活性的酸稳定性α淀粉酶(asAA)和葡糖淀粉酶(GA)接触, 还在25-40℃的温度下包含产乙醇微生物以获得具有5至20%乙醇的发酵液。