Abstract
Two dehydrogenases, cellobiose dehydrogenase from Corynascus thermophilus and pyranose dehydrogenase from Agaricus meleagris, were displayed for the first time on the surface of Saccharomyces cerevisiae using the yeast surface display system. Surface displayed dehydrogenases were used in a microbial fuel cell and generated high power outputs. Surface displayed cellobiose dehydrogenase has demonstrated a midpoint potential of − 28 mV (vs. Ag/AgCl) at pH = 6.5 and was used in a mediator-less anode compartment of a microbial fuel cell producing a power output of 3.3 μW cm− 2 using lactose as fuel. Surface-displayed pyranose dehydrogenase was used in a microbial fuel cell and generated high power outputs using different substrates, the highest power output that was achieved was 3.9 μW cm− 2 using D-xylose. These results demonstrate that surface displayed cellobiose dehydrogenase and pyranose dehydrogenase may successfully be used in microbial bioelectrochemical systems.
| Original language | English |
|---|---|
| Pages (from-to) | 53-60 |
| Number of pages | 8 |
| Journal | Bioelectrochemistry |
| Volume | 112 |
| DOIs | |
| State | Published - 1 Dec 2016 |
Keywords
- Cellobiose dehydrogenase
- Enzymatic fuel cells
- Microbial fuel cells
- Pyranose dehydrogenase
- Yeast surface display
ASJC Scopus subject areas
- Biophysics
- Physical and Theoretical Chemistry
- Electrochemistry
