ROS-mediated antibacterial response of ZnO and ZnO containing cerium under light

被引：9

作者：

Sa, Alexandro S. ^{[1
]}

de Lima, Idglan S. ^{[1
]}

Honorio, Luzia M. ^{[2
]}

Furtini, Marcelo B. ^{[1
]}

de Souza, Juliana K. Dionisio ^{[3
]}

dos Santos, Francisco Eroni P. ^{[1
]}

Barreto, Humberto M. ^{[4
]}

Tabuti, Thiago G. ^{[5
]}

da Silva-Filho, Edson C. ^{[1
]}

Triboni, Eduardo R. ^{[6
]}

Osajima, Josy A. ^{[1
]}

机构：

[1] Univ Fed Piaui, Interdisciplinary Lab Adv Mat LIMAV, BR-64049550 Teresina, PI, Brazil

[2] UFPB, Ctr Agr Sci, Dept Chem & Phys, BR-58397000 Areia, PB, Brazil

[3] Univ Fed Paraiba, Fuel & Mat Lab NEP LACOM, BR-58051085 Joao Pessoa, PB, Brazil

[4] Univ Fed Piaui, Dept Parasitol & Microbiol, BR-64049550 Teresina, PI, Brazil

[5] UNIFESP, Postgrad Program Engn & Mat Sci PPGECM, Sao Jose Dos Campos, SP, Brazil

[6] Univ Sao Paulo, Lab Nanotechnol & Proc Engn NEP, BR-12602810 Sao Paulo, SP, Brazil

来源：

CHEMICAL PAPERS | 2022年 / 76卷 / 11期

关键词：

Zinc compounds; Antibacterial activity; Reactive oxygen species; ANTICANCER ACTIVITIES; GREEN SYNTHESIS; NANOPARTICLES; PERFORMANCE; COMPOSITE; CHITOSAN; EXTRACT;

D O I：

10.1007/s11696-022-02390-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Zinc compounds and derivatives are gaining prominence as antibacterial agents capable of generating oxidative stress and cell death in Gram-positive and Gram-negative bacteria by reactive oxygen-based species (ROS). ZnO and ZnO-Ce NPs were evaluated against Staphylococcusaureus and Escherichia coli in the dark and light. The antibacterial efficiency of ZnO was improved (72%) against S. aureus under irradiation. ROS-mediated oxidative mechanism was proposed to elucidate the effects on membrane structure destruction and functional inactivation of bacteria. ROS exhibited mortality rates against E. coli, indicating that ROS from ZnO plays a key role in the antibacterial activity. The antibacterial activities of the zinc compounds on the bacteria exhibited positive potential due to the discharge interactions of the bacterial surface with the Zn2+ ions and ROS from the semiconductor.

引用

页码：7051 / 7060

页数：10

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