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Antimicrobial potential of consolidation polymers loaded with biological copper nanoparticles.

Essa AM, Khallaf MK - BMC Microbiol. (2016)

Bottom Line: Biodeterioration of historic monuments and stone works by microorganisms takes place as a result of biofilm production and secretion of organic compounds that negatively affect on the stone matrix.Furthermore, the elemental composition of CuNPs was elucidated using electron dispersive x-ray system connected with the scanning electron microscope.Consolidation polymers impregnated with CuNPs could be used to restrain microbial deterioration in addition to the refinement of physico-mechanical behavior of the historic stones.

View Article: PubMed Central - PubMed

Affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt. ashraf.essa@yahoo.com.

ABSTRACT

Background: Biodeterioration of historic monuments and stone works by microorganisms takes place as a result of biofilm production and secretion of organic compounds that negatively affect on the stone matrix.

Methods: Copper nanoparticles (CuNPs) were prepared biologically using the headspace gases generated by the bacterial culture Escherichia coli Z1. The antimicrobial activity of CuNPs was evaluated against the bacterial strains Bacillus subtilis, Micrococcus luteus, Streptomyces parvulus, Escherichia coli, Pseudomonas aeruginosa as well as some fungal strains Aspergillus niger, Aspergillus flavus, Penicillium chrysogenum, Fusarium solani and Alternaria solani.

Results: Biological CuNPs demonstrated antibacterial and antifungal activities higher than those of the untreated copper sulfate. At the same time, limestone and sandstone blocks treated with consolidation polymers functionalized with CuNPs recorded apparent antimicrobial activity against E. coli, S. parvulus and B. subtilis in addition to an improvement in the physical and mechanical characters of the treated stones. Furthermore, the elemental composition of CuNPs was elucidated using electron dispersive x-ray system connected with the scanning electron microscope.

Conclusion: Consolidation polymers impregnated with CuNPs could be used to restrain microbial deterioration in addition to the refinement of physico-mechanical behavior of the historic stones.

No MeSH data available.


Related in: MedlinePlus

SEM images and EDX analysis of the unfunctionalized silicon polymer (a), silicon polymer functionalized with CuNPs (b) and unfunctionalized acrylic polymer (c), acrylic polymer functionalized with CuNPs (d) while black arrows indicate the elemental copper
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Fig3: SEM images and EDX analysis of the unfunctionalized silicon polymer (a), silicon polymer functionalized with CuNPs (b) and unfunctionalized acrylic polymer (c), acrylic polymer functionalized with CuNPs (d) while black arrows indicate the elemental copper

Mentions: The current study Fig. 3 showed the analysis of the treated and untreated polymers with composite copper structures by scanning electron microscope. In case of the functionalized polymers, tiny particles (10–50 nm in diameter) were identified while these particles were absent in the un-functionalized polymers. At the same time, the EDX analysis of these minute structures showed the presence of the elemental copper in the treated silicon and acrylic polymers in addition to oxygen, carbon, sulfur, silicon, potassium, chloride and calcium elements. Furthermore, the EDX analysis of the un-functionalized polymers showed the presence of carbon, silicon and oxygen elements with the silicon polymer while the peaks of carbon, oxygen, silicon, chloride, calcium and aluminum peaks were recognized in case of the acrylic polymer.Fig. 3


Antimicrobial potential of consolidation polymers loaded with biological copper nanoparticles.

Essa AM, Khallaf MK - BMC Microbiol. (2016)

SEM images and EDX analysis of the unfunctionalized silicon polymer (a), silicon polymer functionalized with CuNPs (b) and unfunctionalized acrylic polymer (c), acrylic polymer functionalized with CuNPs (d) while black arrows indicate the elemental copper
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4940715&req=5

Fig3: SEM images and EDX analysis of the unfunctionalized silicon polymer (a), silicon polymer functionalized with CuNPs (b) and unfunctionalized acrylic polymer (c), acrylic polymer functionalized with CuNPs (d) while black arrows indicate the elemental copper
Mentions: The current study Fig. 3 showed the analysis of the treated and untreated polymers with composite copper structures by scanning electron microscope. In case of the functionalized polymers, tiny particles (10–50 nm in diameter) were identified while these particles were absent in the un-functionalized polymers. At the same time, the EDX analysis of these minute structures showed the presence of the elemental copper in the treated silicon and acrylic polymers in addition to oxygen, carbon, sulfur, silicon, potassium, chloride and calcium elements. Furthermore, the EDX analysis of the un-functionalized polymers showed the presence of carbon, silicon and oxygen elements with the silicon polymer while the peaks of carbon, oxygen, silicon, chloride, calcium and aluminum peaks were recognized in case of the acrylic polymer.Fig. 3

Bottom Line: Biodeterioration of historic monuments and stone works by microorganisms takes place as a result of biofilm production and secretion of organic compounds that negatively affect on the stone matrix.Furthermore, the elemental composition of CuNPs was elucidated using electron dispersive x-ray system connected with the scanning electron microscope.Consolidation polymers impregnated with CuNPs could be used to restrain microbial deterioration in addition to the refinement of physico-mechanical behavior of the historic stones.

View Article: PubMed Central - PubMed

Affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt. ashraf.essa@yahoo.com.

ABSTRACT

Background: Biodeterioration of historic monuments and stone works by microorganisms takes place as a result of biofilm production and secretion of organic compounds that negatively affect on the stone matrix.

Methods: Copper nanoparticles (CuNPs) were prepared biologically using the headspace gases generated by the bacterial culture Escherichia coli Z1. The antimicrobial activity of CuNPs was evaluated against the bacterial strains Bacillus subtilis, Micrococcus luteus, Streptomyces parvulus, Escherichia coli, Pseudomonas aeruginosa as well as some fungal strains Aspergillus niger, Aspergillus flavus, Penicillium chrysogenum, Fusarium solani and Alternaria solani.

Results: Biological CuNPs demonstrated antibacterial and antifungal activities higher than those of the untreated copper sulfate. At the same time, limestone and sandstone blocks treated with consolidation polymers functionalized with CuNPs recorded apparent antimicrobial activity against E. coli, S. parvulus and B. subtilis in addition to an improvement in the physical and mechanical characters of the treated stones. Furthermore, the elemental composition of CuNPs was elucidated using electron dispersive x-ray system connected with the scanning electron microscope.

Conclusion: Consolidation polymers impregnated with CuNPs could be used to restrain microbial deterioration in addition to the refinement of physico-mechanical behavior of the historic stones.

No MeSH data available.


Related in: MedlinePlus