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    • 6. 发明授权
    • Methods for degrading lignocellulosic materials
    • 降解木质纤维素材料的方法
    • US07943350B2
    • 2011-05-17
    • US11821438
    • 2007-06-22
    • Elena VlasenkoJoel CherryFeng Xu
    • Elena VlasenkoJoel CherryFeng Xu
    • C12P19/04
    • C12P19/14C12P7/06C12P13/04Y02E50/17Y02E50/343
    • The present invention relates to methods for degrading a lignocellulosic material, comprising: treating the lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant. The present invention also relates to methods for producing an organic substance, comprising: (a) saccharifying a lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant; (b) fermenting the saccharified lignocellulosic material of step (a) with one or more fermenting microorganisms; and (c) recovering the organic substance from the fermentation.
    • 本发明涉及降解木质纤维素材料的方法,包括:在至少一种表面活性剂存在下,用有效量的一种或多种纤维素分解酶处理木质纤维素材料,所述表面活性剂选自仲醇乙氧基化物,脂肪醇乙氧基化物 ,壬基酚乙氧基化物,十三烷基乙氧基化物和聚氧乙烯醚,其中与不存在表面活性剂相比,表面活性剂的存在增加了木质纤维素材料的降解。 本发明还涉及生产有机物质的方法,其包括:(a)在至少一种表面活性剂存在下,用有效量的一种或多种纤维素分解酶对木质纤维素材料进行糖化,所述表面活性剂选自仲醇乙氧基化物 ,脂肪醇乙氧基化物,壬基酚乙氧基化物,十三烷基乙氧基化物和聚氧乙烯醚,其中与不存在表面活性剂相比,表面活性剂的存在增加了木质纤维素材料的降解; (b)用一种或多种发酵微生物发酵步骤(a)的糖化木质纤维素材料; 和(c)从发酵中回收有机物质。
    • 8. 发明申请
    • Methods for degrading lignocellulosic materials
    • 降解木质纤维素材料的方法
    • US20050164355A1
    • 2005-07-28
    • US11036871
    • 2005-01-14
    • Elena VlasenkoJoel CherryFeng Xu
    • Elena VlasenkoJoel CherryFeng Xu
    • C12P7/06C12P7/18C12P7/36C12P7/40C12P13/04C12P19/04C12P19/14
    • C12P19/14C12P7/06C12P13/04Y02E50/17Y02E50/343
    • The present invention relates to methods for degrading a lignocellulosic material, comprising: treating the lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant. The present invention also relates to methods for producing an organic substance, comprising: (a) saccharifying a lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant; (b) fermenting the saccharified lignocellulosic material of step (a) with one or more fermentating microoganisms; and (c) recovering the organic substance from the fermentation.
    • 本发明涉及降解木质纤维素材料的方法,包括:在至少一种表面活性剂存在下,用有效量的一种或多种纤维素分解酶处理木质纤维素材料,所述表面活性剂选自仲醇乙氧基化物,脂肪醇乙氧基化物 ,壬基酚乙氧基化物,十三烷基乙氧基化物和聚氧乙烯醚,其中与不存在表面活性剂相比,表面活性剂的存在增加了木质纤维素材料的降解。 本发明还涉及生产有机物质的方法,其包括:(a)在至少一种表面活性剂存在下,用有效量的一种或多种纤维素分解酶对木质纤维素材料进行糖化,所述表面活性剂选自仲醇乙氧基化物 ,脂肪醇乙氧基化物,壬基酚乙氧基化物,十三烷基乙氧基化物和聚氧乙烯醚,其中与不存在表面活性剂相比,表面活性剂的存在增加了木质纤维素材料的降解; (b)用一种或多种发酵微生物发酵步骤(a)的糖化木质纤维素材料; 和(c)从发酵中回收有机物质。
    • 10. 发明授权
    • Variants of glycoside hydrolases
    • 糖苷水解酶的变体
    • US07932073B2
    • 2011-04-26
    • US11891249
    • 2007-08-08
    • Sarah TeterConnie WardJoel CherryAubrey JonesPaul HarrisJung Yi
    • Sarah TeterConnie WardJoel CherryAubrey JonesPaul HarrisJung Yi
    • C12N9/42C12S3/00C11D3/00
    • C12N9/2437C11D3/38645C12N9/2434C12N9/2445C12P7/10C12P19/02C12P19/14C12Y302/01021C12Y302/01091C12Y302/01176
    • The present invention relates to variants of a parent glycoside hydrolase, comprising a substitution at one or more positions corresponding to positions 21, 94, 157, 205, 206, 247, 337, 350, 373, 383, 438, 455, 467, and 486 of amino acids 1 to 513 of SEQ ID NO: 2, and optionally further comprising a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2 a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2, wherein the variants have glycoside hydrolase activity. The present invention also relates to nucleotide sequences encoding the variant glycoside hydrolases and to nucleic acid constructs, vectors, and host cells comprising the nucleotide sequences.
    • 本发明涉及母体糖苷水解酶的变体,其包含在对应于位置21,94,157,205,206,247,337,350,373,383,438,455,467的一个或多个位置的取代,和 486,SEQ ID NO:2的氨基酸1至513,并且任选地还包含在对应于位置8,22,41,49,57,113,193,196,226,227,246,29的一个或多个位置的取代, SEQ ID NO:2的氨基酸1至513的251,255,259,301,356,371,411和462在对应于位置8,22,41,49,57,113, SEQ ID NO:2的氨基酸1至513的193,196,226,227,246,251,255,259,301,356,371,411和462,其中所述变体具有糖苷水解酶活性。 本发明还涉及编码变体糖苷水解酶的核苷酸序列以及包含核苷酸序列的核酸构建体,载体和宿主细胞。