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Electroactive Biofilms for Sensing: Reflections and Perspectives
ACS Sensors ( IF 8.9 ) Pub Date : 2017-07-26 00:00:00 , DOI: 10.1021/acssensors.7b00418
Antonin Prévoteau 1 , Korneel Rabaey 1
Affiliation  

Microbial electrochemistry has from the onset been recognized for its sensing potential due to the microbial ability to enhance signals through metabolic cascades, its relative selectivity toward substrates, and the higher stability conferred by the microbial ability to self-replicate. The greatest challenge has been to achieve stable and efficient transduction between a microorganism and an electrode surface. Over the past decades, a new kind of microbial architecture has been observed to spontaneously develop on polarized electrodes: the electroactive biofilm (EAB). The EAB conducts electrons over long distances and performs quasi-reversible electron transfer on conventional electrode surfaces. It also possesses self-regenerative properties. In only a few years, EABs have inspired considerable research interest for use as biosensors for environmental or bioprocess monitoring. Multiple challenges still need to be overcome before implementation at larger scale of this new kind of biosensors can be realized. This perspective first introduces the specific characteristics of the EAB with respect to other electrochemical biosensors. It summarizes the sensing applications currently proposed for EABs, stresses their limitations, and suggests strategies toward potential solutions. Conceptual prospects to engineer EABs for sensing purposes are also discussed.

中文翻译:

用于感应的电活性生物膜:反思与观点

由于微生物通过代谢级联增强信号的能力,其对底物的相对选择性以及微生物自我复制能力所赋予的更高的稳定性,因此从一开始就认识到了微生物电化学的潜力。最大的挑战是在微生物和电极表面之间实现稳定有效的转导。在过去的几十年中,已经观察到一种新型的微生物结构会在极化电极上自发形成:电活性生物膜(EAB)。EAB在长距离上传导电子,并在常规电极表面上进行准可逆的电子转移。它还具有自再生性能。在短短几年内,EABs激发了相当大的研究兴趣,将其用作环境或生物过程监测的生物传感器。在实现这种新型生物传感器的大规模应用之前,仍然需要克服多个挑战。该观点首先介绍了相对于其他电化学生物传感器的EAB的特定特性。它总结了目前针对EAB的传感应用,强调了其局限性,并提出了针对潜在解决方案的策略。还讨论了为感应目的设计EAB的概念前景。该观点首先介绍了相对于其他电化学生物传感器的EAB的特定特性。它总结了目前针对EAB的传感应用,强调了其局限性,并提出了针对潜在解决方案的策略。还讨论了为感应目的设计EAB的概念前景。该观点首先介绍了相对于其他电化学生物传感器的EAB的特定特性。它总结了目前针对EAB的传感应用,强调了其局限性,并提出了针对潜在解决方案的策略。还讨论了为感应目的设计EAB的概念前景。
更新日期:2017-07-28
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