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Antibacterial mechanism of Cu2+–ZnO/cetylpyridinium–montmorillonite in vitro
AbstractCu2+–ZnO/cetylpyridinium–montmorillonite (CZCM) were prepared to investigate the antibacterial mechanism in vitro using pathogenic Escherichia coli and Salmonella typhimurium. CZCM inhibited the growth of E. coli and S. typhimurium. The minimum inhibitory concentrations and minimum bactericidal concentrations of CZCM for E. coli were 80μgml−1 and 160μgml−1, and for S. typhimurium 40μgml−1 and 160μgml−1. CZCM destroyed the bacterial wall and changed the cellular morphology and the efflux of the intracellular components. The intracellular K+ and enzyme were significantly (P<0.05) released from the bacterial cells after CZCM addition. Oxygen consumption of the bacteria showed that CZCM had a negative effect on the tricarboxylic acid pathway of the bacterial respiratory metabolism. Light had a no significant influence on the antibacterial activity of CZCM.
Research Highlights►CZCM were prepared using Cu2+, Zn2+, cetylpyridinium, and montmorillonite. ►This material exhibited a highly antibacterial activity to pathogenic bacteria. ►CZCM destroyed the bacterial wall and changed the cellular morphology. ►CZCM had a negative effect on the bacterial respiratory metabolism. ►Thus, CZCM may be used as an antibacterial agent to control the bacterial infection.
Antibacterial mechanism of Cu2+–ZnO/cetylpyridinium–montmorillonite in vitro
AbstractCu2+–ZnO/cetylpyridinium–montmorillonite (CZCM) were prepared to investigate the antibacterial mechanism in vitro using pathogenic Escherichia coli and Salmonella typhimurium. CZCM inhibited the growth of E. coli and S. typhimurium. The minimum inhibitory concentrations and minimum bactericidal concentrations of CZCM for E. coli were 80μgml−1 and 160μgml−1, and for S. typhimurium 40μgml−1 and 160μgml−1. CZCM destroyed the bacterial wall and changed the cellular morphology and the efflux of the intracellular components. The intracellular K+ and enzyme were significantly (P<0.05) released from the bacterial cells after CZCM addition. Oxygen consumption of the bacteria showed that CZCM had a negative effect on the tricarboxylic acid pathway of the bacterial respiratory metabolism. Light had a no significant influence on the antibacterial activity of CZCM.
Research Highlights►CZCM were prepared using Cu2+, Zn2+, cetylpyridinium, and montmorillonite. ►This material exhibited a highly antibacterial activity to pathogenic bacteria. ►CZCM destroyed the bacterial wall and changed the cellular morphology. ►CZCM had a negative effect on the bacterial respiratory metabolism. ►Thus, CZCM may be used as an antibacterial agent to control the bacterial infection.
Antibacterial mechanism of Cu2+–ZnO/cetylpyridinium–montmorillonite in vitro
Ma, Yu-Long (author) / Yang, Bo (author) / Guo, Tong (author) / Xie, Li (author)
Applied Clay Science ; 50 ; 348-353
2010-08-30
6 pages
Article (Journal)
Electronic Resource
English
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