LEQUIA, Institute of the Environment, University of Girona, Campus de Montilivi, Carrer Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain.
LEQUIA, Institute of the Environment, University of Girona, Campus de Montilivi, Carrer Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain; Centre of Microbial Ecology and Technology, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
Bioresour Technol. 2017 Mar;228:201-209. doi: 10.1016/j.biortech.2016.12.035. Epub 2016 Dec 30.
This study reveals that reduction of carbon dioxide (CO) to commodity chemicals can be functionally compartmentalized in bioelectrochemical systems. In the present example, a syntrophic consortium composed by H-producers (Rhodobacter sp.) in the biofilm is combined with carboxidotrophic Clostridium species, mainly found in the bulk liquid. The performance of these H-mediated electricity-driven systems could be tracked by the activity of a biological H sensory protein identified at cathode potentials between -0.2V and -0.3V vs SHE. This seems to point out that such signal is not strain specific, but could be detected in any organism containing hydrogenases. Thus, the findings of this work open the door to the development of a biosensor application or soft sensors for monitoring such systems.
本研究表明，二氧化碳（CO）还原为商品化学品可以在生物电化学系统中进行功能分区。在本实例中，由生物膜中的产氢菌（Rhodobacter sp.）组成的共营养联合体与主要存在于主体液体中的产羧基菌 Clostridium 物种相结合。这些 H 介导的电力驱动系统的性能可以通过在 SHE 电位为-0.2V 到-0.3V 之间的阴极电位下鉴定的生物 H 感应蛋白的活性来跟踪。这似乎表明，这种信号不是菌株特异性的，而是可以在任何含有氢化酶的生物体中检测到。因此，这项工作的发现为开发生物传感器应用或软传感器以监测此类系统开辟了道路。
