首页> 美国卫生研究院文献>Biotechnology for Biofuels >Bioflocculant production from untreated corn stover using Cellulosimicrobium cellulans L804 isolate and its application to harvesting microalgae
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Bioflocculant production from untreated corn stover using Cellulosimicrobium cellulans L804 isolate and its application to harvesting microalgae

机译:使用纤维素微纤维素纤维素L804分离物从未经处理的玉米秸秆生产生物絮凝剂及其在微藻收获中的应用

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摘要

BackgroundMicroalgae are widely studied for biofuel production. Nevertheless, harvesting step of biomass is still a critical challenge. Bioflocculants have been applied in numerous applications including the low-cost harvest of microalgae. A major bottleneck for commercial application of bioflocculant is its high production cost. Lignocellulosic substrates are abundantly available. Hence, the hydrolyzates of rice stover and corn stover have been used as carbon source to produce the bioflocculant in previous studies. However, the hydrolyzates of biomass required the neutralization of pH before the downstream fermentation processes, and the toxic by-products produced during hydrolysis process inhibited the microbial activities in the subsequent fermentation processes and contaminated the bioflocculant product. Therefore, strains that can secrete plant cell-wall-degrading enzymes and simultaneously produce bioflocculants through directly degrading the lignocellulosic biomasses are of academic and practical interests.
机译:背景技术对微藻进行了广泛的研究以生产生物燃料。然而,生物质的收获步骤仍然是关键的挑战。生物絮凝剂已被用于许多应用,包括低成本收获微藻。生物絮凝剂商业应用的主要瓶颈是其高生产成本。木质纤维素底物可大量获得。因此,在以前的研究中,稻秸秆和玉米秸秆的水解产物已被用作碳源来生产生物絮凝剂。然而,生物质的水解产物在下游发酵过程之前需要中和pH,并且在水解过程中产生的有毒副产物抑制了随后发酵过程中的微生物活性并污染了生物絮凝剂产物。因此,能够分泌植物细胞壁降解酶并通过直接降解木质纤维素生物质同时产生生物絮凝剂的菌株具有学术和实践意义。

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