Facile Preparation of Nanosilver Particles with Excellent Antimicrobial Activity via Release of Ionic Silver.
Identifieur interne : 000586 ( Main/Corpus ); précédent : 000585; suivant : 000587Facile Preparation of Nanosilver Particles with Excellent Antimicrobial Activity via Release of Ionic Silver.
Auteurs : Xuna Tang ; Dawei Guo ; Shanxiang Jiang ; Ning Gu ; Yanhong Ni ; Jiuyu Ge ; Qingang HuSource :
- Journal of nanoscience and nanotechnology [ 1533-4880 ] ; 2017.
Abstract
Nanosilver particles (SNPs) have been widely exploited in various fields, including the medical sciences due to their excellent inhibitory and bactericidal effects. It is of great importance to prepare SNPs using green synthesis that has environmentally acceptable solvent systems and eco-friendly reducing agents. In the current study, gallic acid was employed as both a reducing agent and a stabilizing agent to synthesize SNPs at mild ambient conditions. The image of transmission electron microscopy (TEM) showed that SNPs exhibited approximately spherical shape with the average diameter of 13.81±2.21 nm. The absorbance peak of obtained SNPs was sharp with the maximum wavelength of 400.5 nm by ultraviolet-visible (UV-vis) spectroscopy, suggesting the formation of small and highly monodispersed SNPs. The antimicrobial potential of the SNPs was evaluated against multiple common pathogenic microbes. The results indicated that the microbial sensitivity to the SNPs was found to vary depending on the microbial species. Among them, the gram-negative bacteria exhibited more sensitive toward SNPs than the gram-positive bacteria. In addition, the N-acetyl-L-cysteine (NAC), a silver ion chelator, pretreatment could protect the E. coli and P. aeruginosa from the SNPs inhibition, while the pretreatment of the L-ascorbic acid, an antioxidant against oxidative stress, did not significantly influence the antibacterial effects of the SNPs. These data suggested that the ionic silver release, but not reactive oxygen species (ROS), played a key role in the antimicrobial effect of the SNPs. To sum up, this study provides an environmentally friendly technique for facile synthesis of SNPs with excellent antibacterial potential.
DOI: 10.1166/jnn.2017.12671
PubMed: 29672008
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It is of great importance to prepare SNPs using green synthesis that has environmentally acceptable solvent systems and eco-friendly reducing agents. In the current study, gallic acid was employed as both a reducing agent and a stabilizing agent to synthesize SNPs at mild ambient conditions. The image of transmission electron microscopy (TEM) showed that SNPs exhibited approximately spherical shape with the average diameter of 13.81±2.21 nm. The absorbance peak of obtained SNPs was sharp with the maximum wavelength of 400.5 nm by ultraviolet-visible (UV-vis) spectroscopy, suggesting the formation of small and highly monodispersed SNPs. The antimicrobial potential of the SNPs was evaluated against multiple common pathogenic microbes. The results indicated that the microbial sensitivity to the SNPs was found to vary depending on the microbial species. Among them, the gram-negative bacteria exhibited more sensitive toward SNPs than the gram-positive bacteria. In addition, the N-acetyl-L-cysteine (NAC), a silver ion chelator, pretreatment could protect the E. coli and P. aeruginosa from the SNPs inhibition, while the pretreatment of the L-ascorbic acid, an antioxidant against oxidative stress, did not significantly influence the antibacterial effects of the SNPs. These data suggested that the ionic silver release, but not reactive oxygen species (ROS), played a key role in the antimicrobial effect of the SNPs. To sum up, this study provides an environmentally friendly technique for facile synthesis of SNPs with excellent antibacterial potential.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">29672008</PMID><DateCompleted><Year>2018</Year><Month>04</Month><Day>26</Day></DateCompleted><DateRevised><Year>2019</Year><Month>07</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1533-4880</ISSN><JournalIssue CitedMedium="Print"><Volume>17</Volume><Issue>2</Issue><PubDate><Year>2017</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Journal of nanoscience and nanotechnology</Title><ISOAbbreviation>J Nanosci Nanotechnol</ISOAbbreviation></Journal><ArticleTitle>Facile Preparation of Nanosilver Particles with Excellent Antimicrobial Activity via Release of Ionic Silver.</ArticleTitle><Pagination><MedlinePgn>1046-052</MedlinePgn></Pagination><Abstract><AbstractText>Nanosilver particles (SNPs) have been widely exploited in various fields, including the medical sciences due to their excellent inhibitory and bactericidal effects. It is of great importance to prepare SNPs using green synthesis that has environmentally acceptable solvent systems and eco-friendly reducing agents. In the current study, gallic acid was employed as both a reducing agent and a stabilizing agent to synthesize SNPs at mild ambient conditions. The image of transmission electron microscopy (TEM) showed that SNPs exhibited approximately spherical shape with the average diameter of 13.81±2.21 nm. The absorbance peak of obtained SNPs was sharp with the maximum wavelength of 400.5 nm by ultraviolet-visible (UV-vis) spectroscopy, suggesting the formation of small and highly monodispersed SNPs. The antimicrobial potential of the SNPs was evaluated against multiple common pathogenic microbes. The results indicated that the microbial sensitivity to the SNPs was found to vary depending on the microbial species. Among them, the gram-negative bacteria exhibited more sensitive toward SNPs than the gram-positive bacteria. In addition, the N-acetyl-L-cysteine (NAC), a silver ion chelator, pretreatment could protect the E. coli and P. aeruginosa from the SNPs inhibition, while the pretreatment of the L-ascorbic acid, an antioxidant against oxidative stress, did not significantly influence the antibacterial effects of the SNPs. These data suggested that the ionic silver release, but not reactive oxygen species (ROS), played a key role in the antimicrobial effect of the SNPs. To sum up, this study provides an environmentally friendly technique for facile synthesis of SNPs with excellent antibacterial potential.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Tang</LastName><ForeName>Xuna</ForeName><Initials>X</Initials></Author><Author ValidYN="Y"><LastName>Guo</LastName><ForeName>Dawei</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Jiang</LastName><ForeName>Shanxiang</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Gu</LastName><ForeName>Ning</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Ni</LastName><ForeName>Yanhong</ForeName><Initials>Y</Initials></Author><Author ValidYN="Y"><LastName>Ge</LastName><ForeName>Jiuyu</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Hu</LastName><ForeName>Qingang</ForeName><Initials>Q</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Nanosci Nanotechnol</MedlineTA><NlmUniqueID>101088195</NlmUniqueID><ISSNLinking>1533-4880</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Nanosilver Particles</Keyword><Keyword MajorTopicYN="Y">Antimicrobial Activity</Keyword><Keyword MajorTopicYN="Y">Green Synthesis</Keyword><Keyword MajorTopicYN="Y">Gallic Acid</Keyword><Keyword MajorTopicYN="Y">Ionic Silver</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>4</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">29672008</ArticleId><ArticleId IdType="doi">10.1166/jnn.2017.12671</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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