Catalytic activity of yeast extract in biofuel cell.
It was revealed that the dry powder yeast extract (YE) has the ability to act as a biocatalyst as well as a mediator in a biofuel cell. The yeast extract, from Nihon Pharmaceutical Co., Ltd., was used as a biocatalyst in an open air cathode biofuel cell containing phosphate buffer for glucose oxidation. The anode medium with only the YE showed an immediate activity by producing a current and delivering power depending on its concentration. By adding glucose to the anode medium, the anode potential decreased with time to -0.2 V vs. normal hydrogen electrode (NHE), and produced a higher power compared to that without glucose. The biofuel cell produced an open circuit voltage (OCV) as high as 1 V.
Department of Chemical and Environmental Engineering, Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
Enas Taha
ET
Sayed
Yuka
Y
Saito
Takuya
T
Tsujiguchi
Nobuyoshi
N
Nakagawa
D001674:Bioelectric Energy Sources / Q000382:microbiology*; D004566:Electrodes; D004798:Enzymes; D005947:Glucose / Q000378:metabolism; D010084:Oxidation-Reduction; D012441:Saccharomyces cerevisiae / Q000378:metabolism; D015003:Yeasts / Q000378:metabolism*
D004798:Enzymes; D005947:Glucose