Effect of electrochemical redox reaction on growth and metabolism of Saccharomyces cerevisiae as an environmental factor.
The effect of an electrochemically generated oxidation-reduction potential and electric pulse on ethanol production and growth of Saccharomyces cerevisiae ATCC 26603 was experimented and compared with effects of electron mediators (neutral red, benzyl viologen, and thionine), chemical oxidants (hydrogen peroxide and hypochlorite), chemical reductants (sulfite and nitrite), oxygen, and hydrogen. The oxidation (anodic) and reduction (cathodic) potential and electric pulse activated ethanol production and growth, and changed the total soluble protein pattern of the test strain. Neutral red electrochemically reduced activated ethanol production and growth of the test strain, but benzyl viologen and thionine did not. Nitrite inhibited ethanol production but did not influence growth of the test strain. Hydrogen peroxide, hypochlorite, and sulfite did not influence ethanol production and growth of the test strain. Hydrogen and oxygen also did not influence the growth and ethanol production. It shows that the test strain may perceive electrochemically generated oxidation-reduction potential and electric pulse as an environmental factor.
Department of Biological Engineering, Seokyeong University, Seoul 136-704, Korea.
Kwan Byung
KB
Na
Tae Sik
TS
Hwang
Sung Hun
SH
Lee
Dae Hee
DH
Ahn
Doo Hyun
DH
Park
D019149:Bioreactors; D001709:Biotechnology / Q000379:methods; D004560:Electricity; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods; D004566:Electrodes; D004777:Environment; D000431:Ethanol / Q000378:metabolism; D005285:Fermentation; D009499:Neutral Red / Q000494:pharmacology; D010084:Oxidation-Reduction; D012441:Saccharomyces cerevisiae / Q000254:growth & development* / Q000378:metabolism*
D009499:Neutral Red; D000431:Ethanol