Data underlying the publication: Lactate metabolism and microbiome composition are affected by nitrogen gas supply in continuous lactate-based chain elongation

Chain elongation reactor microbiomes produce valuable medium-chain carboxylates (MCC) from non-sterile residual substrates where lactate is a relevant intermediate. Gas supply has been shown to impact chain elongation performance. In the present study, the effect of nitrogen gas (N₂) supply on lactate metabolism, conversion rates, biomass growth and microbiome composition was evaluated in a lactate-fed upflow anaerobic reactor with continuous or intermittent N₂ gas supply.

链延长反应器微生物组可从非无菌残余底物中合成具有应用价值的中链羧酸盐（medium-chain carboxylates, MCC），乳酸盐为该过程的关键中间产物。已有研究表明，气体供应会对链延长过程的运行性能产生影响。本研究以乳酸为进料底物的上流式厌氧反应器为研究对象，设置连续与间歇式氮气（N₂）供应模式，评估了氮气供应对乳酸盐代谢、转化速率、生物量生长以及微生物组组成的影响。