Improved Performance of a Novel-Model Laccase Based Microbial Fuel Cell (LB-MFC) with Edible Mushroom as a Whole-Cell Biocatalyst
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Microbial Fuel Cell & Bioremediation Laboratory, Faculty of Science, Thaksin University, Thailand
Microbial Technology for Agriculture, Food and Environment Research Center, Thaksin University, Thailand
Submission date: 2022-01-28
Final revision date: 2022-03-03
Acceptance date: 2022-03-07
Online publication date: 2022-06-06
Publication date: 2022-09-01
Corresponding author
Pimprapa Chaijak   

Biology, Thaksin University, 93210, Phatthalung, Thailand
Pol. J. Environ. Stud. 2022;31(5):4481-4485
Edible mushroom laccase is a fascinating extracellular enzyme owing to its simple operation. This research examined (a) the electrochemical properties of a single-chamber microbial fuel cell with two edible mushrooms (Pleurotus pulmonarius and Coprinus fimetarrius), and (b) the laccase activity of edible mushrooms grown in spent mushrooms as a low-cost substrate. The results revealed that the single-chamber MFC with P. pulmonarius achieved a maximum open-circuit voltage of 940.00±10.00 mV, a maximum current density of 97.14±2.86 mA/m2, and a PD of 13.22±0.78 mW/m2. When P. pulmonarius was cultured in a sawdust substrate without chemical addition, laccase activity of 155.17±0.10 U/mL was obtained. There has been no previous report of electricity generation from a membrane-less single-chamber MFC using P. pulmonarius mycelium cultured on sawdust substrate as a whole-cell cathode catalyst.
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