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首页> 外文期刊>Preparative biochemistry & biotechnology: An international journal for rapid communication >Treatability of cheese whey for single-cell protein production in nonsterile systems: Part II. The application of aerobic sequencing batch reactor (aerobic SBR) to produce high biomass of Dioszegia sp TISTR 5792
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Treatability of cheese whey for single-cell protein production in nonsterile systems: Part II. The application of aerobic sequencing batch reactor (aerobic SBR) to produce high biomass of Dioszegia sp TISTR 5792

机译：干酪乳清在非无菌系统中用于单细胞蛋白质生产的可处理性：第二部分。有氧顺序分批反应器（好氧SBR）在生产高产Dioszegia sp TISTR 5792中的应用

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摘要

This study aimed to investigate the efficiency of an aerobic sequencing batch reactor (aerobic SBR) in a nonsterile system using the application of an experimental design via central composite design (CCD). The acidic whey obtained from lactic acid fermentation by immobilized Lactobacillus plantarum sp. TISTR 2265 was fed into the bioreactor of the aerobic SBR in an appropriate ratio between acidic whey and cheese whey to produce an acidic environment below 4.5 and then was used to support the growth of Dioszegia sp. TISTR 5792 by inhibiting bacterial contamination. At the optimal condition for a high yield of biomass production, the system was run with a hydraulic retention time (HRT) of 4 days, a solid retention time (SRT) of 8.22 days, and an acidic whey concentration of 80% feeding. The chemical oxygen demand (COD) decreased from 25,230mg/L to 6,928mg/L, which represented a COD removal of 72.15%. The yield of biomass production and lactose utilization by Dioszegia sp. TISTR 5792 were 13.14g/L and 33.36%, respectively, with a long run of up to 180cycles and the pH values of effluent were rose up to 8.32 without any pH adjustment.
机译：这项研究旨在通过中央复合设计（CCD）的实验设计的应用，研究有氧测序间歇反应器（ABR）在非无菌系统中的效率。固定化植物乳杆菌从乳酸发酵中获得的酸性乳清。将TISTR 2265以酸性乳清和干酪乳清之间的适当比例加入有氧SBR的生物反应器中，以产生低于4.5的酸性环境，然后用于支持Dioszegia sp。的生长。 TISTR 5792通过抑制细菌污染。在高产量生物质的最佳条件下，系统以4天的水力停留时间（HRT），8.22天的固体停留时间（SRT）和80％进料的酸性乳清浓度运行。化学需氧量（COD）从25,230mg / L降至6,928mg / L，这意味着COD去除率为72.15％。 Dioszegia sp。的生物量生产和乳糖利用的产量。 TISTR 5792分别为13.14g / L和33.36％，长期可达180个循环，流出物的pH值在不进行任何pH调节的情况下上升至8.32。

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