SilverBacteriV1, Main, Corpus, bibRecord, 000B97

Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface.

Identifieur interne : 000B97 ( Main/Corpus ); précédent : 000B96; suivant : 000B98

Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface.

Auteurs : Meixue Chen ; Lizhu Yan ; Hong He ; Qingyun Chang ; Yunbo Yu ; Jiuhui Qu

Source :

Journal of inorganic biochemistry [ 0162-0134 ] ; 2007.

RBID : pubmed:17350102

English descriptors

KwdEn :
- Aluminum Oxide (MeSH), Catalysis (MeSH), Colony Count, Microbial (MeSH), Escherichia coli K12 (drug effects), Escherichia coli K12 (growth & development), Escherichia coli K12 (ultrastructure), Microscopy, Electron, Scanning (MeSH), Reactive Oxygen Species (MeSH), Silver (MeSH), Spectroscopy, Fourier Transform Infrared (MeSH), Sterilization (methods), Superoxide Dismutase (MeSH).
MESH :
- chemical : Aluminum Oxide, Reactive Oxygen Species, Silver, Superoxide Dismutase.
- drug effects : Escherichia coli K12.
- growth & development : Escherichia coli K12.
- methods : Sterilization.
- ultrastructure : Escherichia coli K12.
- Catalysis, Colony Count, Microbial, Microscopy, Electron, Scanning, Spectroscopy, Fourier Transform Infrared.

Abstract

Bactericidal action of Al(2)O(3), Ag/Al(2)O(3) and AgCl/Al(2)O(3) on pure culture of Escherichia coli K 12 was studied. Ag/Al(2)O(3) and AgCl/Al(2)O(3) demonstrated a stronger bactericidal activity than Al(2)O(3). The colony-forming ability of E. coli was completely lost in 0.5 min on both of Ag/Al(2)O(3) and AgCl/Al(2)O(3) at room temperature in air. The configuration of the bacteria on the catalyst surface was observed using scanning electron microscopy (SEM). Reactive oxygen species (ROS) play an important role in the expression of the bactericidal activity on the surface of catalysts by assay with O(2)/N(2) bubbling and scavenger for ROS. Furthermore, the formation of CO(2) as an oxidation product could be detected by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and be deduced by total carbon analysis. These results strongly support that the bactericidal process on the surface of Ag/Al(2)O(3) and AgCl/Al(2)O(3) was caused by the catalytic oxidation.

DOI: 10.1016/j.jinorgbio.2007.01.008
PubMed: 17350102
PubMed Central: PMC7112529

Links to Exploration step

pubmed:17350102

Le document en format XML

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<author><name sortKey="Chen, Meixue" sort="Chen, Meixue" uniqKey="Chen M" first="Meixue" last="Chen">Meixue Chen</name>
<affiliation><nlm:affiliation>State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Yan, Lizhu" sort="Yan, Lizhu" uniqKey="Yan L" first="Lizhu" last="Yan">Lizhu Yan</name>
</author>
<author><name sortKey="He, Hong" sort="He, Hong" uniqKey="He H" first="Hong" last="He">Hong He</name>
</author>
<author><name sortKey="Chang, Qingyun" sort="Chang, Qingyun" uniqKey="Chang Q" first="Qingyun" last="Chang">Qingyun Chang</name>
</author>
<author><name sortKey="Yu, Yunbo" sort="Yu, Yunbo" uniqKey="Yu Y" first="Yunbo" last="Yu">Yunbo Yu</name>
</author>
<author><name sortKey="Qu, Jiuhui" sort="Qu, Jiuhui" uniqKey="Qu J" first="Jiuhui" last="Qu">Jiuhui Qu</name>
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<author><name sortKey="Chen, Meixue" sort="Chen, Meixue" uniqKey="Chen M" first="Meixue" last="Chen">Meixue Chen</name>
<affiliation><nlm:affiliation>State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation>
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<author><name sortKey="Yan, Lizhu" sort="Yan, Lizhu" uniqKey="Yan L" first="Lizhu" last="Yan">Lizhu Yan</name>
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<author><name sortKey="He, Hong" sort="He, Hong" uniqKey="He H" first="Hong" last="He">Hong He</name>
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<author><name sortKey="Chang, Qingyun" sort="Chang, Qingyun" uniqKey="Chang Q" first="Qingyun" last="Chang">Qingyun Chang</name>
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<author><name sortKey="Yu, Yunbo" sort="Yu, Yunbo" uniqKey="Yu Y" first="Yunbo" last="Yu">Yunbo Yu</name>
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<author><name sortKey="Qu, Jiuhui" sort="Qu, Jiuhui" uniqKey="Qu J" first="Jiuhui" last="Qu">Jiuhui Qu</name>
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<series><title level="j">Journal of inorganic biochemistry</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminum Oxide (MeSH)</term>
<term>Catalysis (MeSH)</term>
<term>Colony Count, Microbial (MeSH)</term>
<term>Escherichia coli K12 (drug effects)</term>
<term>Escherichia coli K12 (growth & development)</term>
<term>Escherichia coli K12 (ultrastructure)</term>
<term>Microscopy, Electron, Scanning (MeSH)</term>
<term>Reactive Oxygen Species (MeSH)</term>
<term>Silver (MeSH)</term>
<term>Spectroscopy, Fourier Transform Infrared (MeSH)</term>
<term>Sterilization (methods)</term>
<term>Superoxide Dismutase (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Aluminum Oxide</term>
<term>Reactive Oxygen Species</term>
<term>Silver</term>
<term>Superoxide Dismutase</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Escherichia coli K12</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Escherichia coli K12</term>
</keywords>
<keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Sterilization</term>
</keywords>
<keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Escherichia coli K12</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Catalysis</term>
<term>Colony Count, Microbial</term>
<term>Microscopy, Electron, Scanning</term>
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<front><div type="abstract" xml:lang="en">Bactericidal action of Al(2)O(3), Ag/Al(2)O(3) and AgCl/Al(2)O(3) on pure culture of Escherichia coli K 12 was studied. Ag/Al(2)O(3) and AgCl/Al(2)O(3) demonstrated a stronger bactericidal activity than Al(2)O(3). The colony-forming ability of E. coli was completely lost in 0.5 min on both of Ag/Al(2)O(3) and AgCl/Al(2)O(3) at room temperature in air. The configuration of the bacteria on the catalyst surface was observed using scanning electron microscopy (SEM). Reactive oxygen species (ROS) play an important role in the expression of the bactericidal activity on the surface of catalysts by assay with O(2)/N(2) bubbling and scavenger for ROS. Furthermore, the formation of CO(2) as an oxidation product could be detected by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and be deduced by total carbon analysis. These results strongly support that the bactericidal process on the surface of Ag/Al(2)O(3) and AgCl/Al(2)O(3) was caused by the catalytic oxidation.</div>
</front>
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<Title>Journal of inorganic biochemistry</Title>
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<ArticleTitle>Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface.</ArticleTitle>
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<Abstract><AbstractText>Bactericidal action of Al(2)O(3), Ag/Al(2)O(3) and AgCl/Al(2)O(3) on pure culture of Escherichia coli K 12 was studied. Ag/Al(2)O(3) and AgCl/Al(2)O(3) demonstrated a stronger bactericidal activity than Al(2)O(3). The colony-forming ability of E. coli was completely lost in 0.5 min on both of Ag/Al(2)O(3) and AgCl/Al(2)O(3) at room temperature in air. The configuration of the bacteria on the catalyst surface was observed using scanning electron microscopy (SEM). Reactive oxygen species (ROS) play an important role in the expression of the bactericidal activity on the surface of catalysts by assay with O(2)/N(2) bubbling and scavenger for ROS. Furthermore, the formation of CO(2) as an oxidation product could be detected by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and be deduced by total carbon analysis. These results strongly support that the bactericidal process on the surface of Ag/Al(2)O(3) and AgCl/Al(2)O(3) was caused by the catalytic oxidation.</AbstractText>
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Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface.

Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface.

Source :

English descriptors

Abstract

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