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    • 6. 发明申请
    • SYSTEMS AND METHODS FOR CONTINUOUSLY FERMENTING C5 AND C6 SACCHARIDES
    • 用于连续引发C5和C6糖链的系统和方法
    • WO2017205705A1
    • 2017-11-30
    • PCT/US2017/034596
    • 2017-05-26
    • API INTELLECTUAL PROPERTY HOLDINGS, LLC
    • SURVASE, ShrinkantZEBROSKI, RyanADAMOS, GeorgiosPYLKKANEN, Vesa
    • C12P7/04C12P7/06C12P7/14C12P7/16C12P7/28C12Q3/00
    • C12P7/10C12P7/04C12P7/16C12P7/28C12P7/52C12P7/54C12P19/02C12P19/14C12P2201/00C12P2203/00Y02E50/10Y02E50/16Y02E50/17
    • This invention provides optimized fermentation of cellulosic and hemicellulosic sugars. Biomass-derived hemicellulosic and cellulosic sugars are independently conditioned and separately fermented, utilizing reuse and recycle of microorganisms, metabolic intermediates, and nutrients. Conditioned sugars can be fermented in separate vessels, where excess cells from glucose fermentation are conveyed to hemicellulose sugar fermentation along with raffinate from solvent recovery, to enhance productivity and product yield. Some variations provide a method of fermenting C 5 and C 6 sugars to fermentation products, the method comprising: fermenting a C 6 -rich sugar feed to a first fermentation product; fermenting a C 5 -rich sugar feed to a second fermentation product; removing microorganism cells from the first fermentor, to maintain a cell concentration within a selected range; conveying microorganism cells to a second fermentor; and removing microorganism cells from the second fermentor, to maintain a microorganism cell concentration that is greater than that in the C 6 -rich fermentor.
    • 本发明提供了纤维素和半纤维素糖的优化发酵。 利用微生物,代谢中间体和营养物质的再利用和再循环,将生物质衍生的半纤维素和纤维素糖独立调节并分别发酵。 条件糖可以在单独的容器中发酵,其中来自葡萄糖发酵的过量细胞与来自溶剂回收的提余液一起被输送到半纤维素糖发酵,以提高生产率和产品产量。 一些变化提供了将C 5和C 6糖发酵成发酵产物的方法,所述方法包括:发酵富含C 6的糖进料 到第一发酵产物; 将第C 5高丰度糖原料发酵成第二发酵产物; 从第一发酵罐中除去微生物细胞,以将细胞浓度保持在选定范围内; 将微生物细胞输送至第二发酵罐; 并从第二发酵罐中除去微生物细胞,以保持比富含Cys6的发酵罐更高的微生物细胞浓度。