Isolation and characterization of a novel electricity-producing yeast, Candida sp. IR11

Yun Yeong Lee; Tae Gwan Kim; Kyung Suk Cho

doi:10.1016/j.biortech.2015.06.038

Isolation and characterization of a novel electricity-producing yeast, Candida sp. IR11

Yun Yeong Lee, Tae Gwan Kim, Kyung Suk Cho

Department of Environmental Science & Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

A novel iron-reducing yeast, Candida sp. IR11, was isolated from an anodic biofilm in a MFC reactor fed glucose as a feedstock. 200-250mV of voltage was produced in the air-cathode MFC inoculated with a pure culture of the strain IR11 where glucose was supplied as a feedstock. When the strain IR11 was inoculated into a conventional MFC treating rejected wastewater from an upflow anaerobic sludge blanket, maximum power density and coulombic efficiency were enhanced from 15.2±0.36 to 20.6±1.52mWm^-2 and from 14.4±0.45% to 21.9±0.71%, respectively. In addition, the inoculation with IR11 improved COD removal from 79.1±1.53% to 91.3±5.29%. The quantitative PCR results showed that the strain IR11 successfully attached the anodic biofilm of the MFC reactors. These results indicate that Candida sp. IR11 is a promising biocatalyst for the enhancement of MFC performance.

Original language	English
Pages (from-to)	556-563
Number of pages	8
Journal	Bioresource Technology
Volume	192
DOIs	https://doi.org/10.1016/j.biortech.2015.06.038
State	Published - 1 Sep 2015

Bibliographical note

Publisher Copyright:
© 2015 Published by Elsevier Ltd.

Keywords

Candida sp.
Electricity-producing yeast
Iron reduction
Microbial fuel cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2015.06.038

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title = "Isolation and characterization of a novel electricity-producing yeast, Candida sp. IR11",

abstract = "A novel iron-reducing yeast, Candida sp. IR11, was isolated from an anodic biofilm in a MFC reactor fed glucose as a feedstock. 200-250mV of voltage was produced in the air-cathode MFC inoculated with a pure culture of the strain IR11 where glucose was supplied as a feedstock. When the strain IR11 was inoculated into a conventional MFC treating rejected wastewater from an upflow anaerobic sludge blanket, maximum power density and coulombic efficiency were enhanced from 15.2±0.36 to 20.6±1.52mWm-2 and from 14.4±0.45% to 21.9±0.71%, respectively. In addition, the inoculation with IR11 improved COD removal from 79.1±1.53% to 91.3±5.29%. The quantitative PCR results showed that the strain IR11 successfully attached the anodic biofilm of the MFC reactors. These results indicate that Candida sp. IR11 is a promising biocatalyst for the enhancement of MFC performance.",

keywords = "Candida sp., Electricity-producing yeast, Iron reduction, Microbial fuel cells",

author = "Lee, {Yun Yeong} and Kim, {Tae Gwan} and Cho, {Kyung Suk}",

note = "Publisher Copyright: {\textcopyright} 2015 Published by Elsevier Ltd.",

year = "2015",

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doi = "10.1016/j.biortech.2015.06.038",

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AU - Lee, Yun Yeong

AU - Kim, Tae Gwan

AU - Cho, Kyung Suk

PY - 2015/9/1

Y1 - 2015/9/1

N2 - A novel iron-reducing yeast, Candida sp. IR11, was isolated from an anodic biofilm in a MFC reactor fed glucose as a feedstock. 200-250mV of voltage was produced in the air-cathode MFC inoculated with a pure culture of the strain IR11 where glucose was supplied as a feedstock. When the strain IR11 was inoculated into a conventional MFC treating rejected wastewater from an upflow anaerobic sludge blanket, maximum power density and coulombic efficiency were enhanced from 15.2±0.36 to 20.6±1.52mWm-2 and from 14.4±0.45% to 21.9±0.71%, respectively. In addition, the inoculation with IR11 improved COD removal from 79.1±1.53% to 91.3±5.29%. The quantitative PCR results showed that the strain IR11 successfully attached the anodic biofilm of the MFC reactors. These results indicate that Candida sp. IR11 is a promising biocatalyst for the enhancement of MFC performance.

AB - A novel iron-reducing yeast, Candida sp. IR11, was isolated from an anodic biofilm in a MFC reactor fed glucose as a feedstock. 200-250mV of voltage was produced in the air-cathode MFC inoculated with a pure culture of the strain IR11 where glucose was supplied as a feedstock. When the strain IR11 was inoculated into a conventional MFC treating rejected wastewater from an upflow anaerobic sludge blanket, maximum power density and coulombic efficiency were enhanced from 15.2±0.36 to 20.6±1.52mWm-2 and from 14.4±0.45% to 21.9±0.71%, respectively. In addition, the inoculation with IR11 improved COD removal from 79.1±1.53% to 91.3±5.29%. The quantitative PCR results showed that the strain IR11 successfully attached the anodic biofilm of the MFC reactors. These results indicate that Candida sp. IR11 is a promising biocatalyst for the enhancement of MFC performance.

KW - Candida sp.

KW - Electricity-producing yeast

KW - Iron reduction

KW - Microbial fuel cells

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JO - Bioresource Technology

JF - Bioresource Technology

ER -

Isolation and characterization of a novel electricity-producing yeast, Candida sp. IR11

Abstract

Bibliographical note

Keywords

UN SDGs

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