Surface enhanced Raman scattering of bacteria using capped and uncapped silver nanoparticles.
Bacteria
Borohydride
Citrate
Secretions
Surface enhanced Raman scattering (SERS)
Journal
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
ISSN: 1873-3557
Titre abrégé: Spectrochim Acta A Mol Biomol Spectrosc
Pays: England
ID NLM: 9602533
Informations de publication
Date de publication:
05 Dec 2020
05 Dec 2020
Historique:
received:
08
05
2020
revised:
01
07
2020
accepted:
12
07
2020
pubmed:
28
7
2020
medline:
15
5
2021
entrez:
28
7
2020
Statut:
ppublish
Résumé
Surface enhanced Raman scattering (SERS) spectra of bacteria were obtained using citrate (capped) and borohydride (uncapped) generated silver nanoparticles (Ag NPs).The observed differences in SERS spectra are attributed to the manner in which these Ag NPs interact with bacteria. Capped Ag NPs are able to partition through the surface polysaccharides of the bacterial cell to bind to the inner and outer cell membranes, as well as the periplasmic space between them. The resultant spectra show contributions due to the components of the cell envelope and cellular secretions. Uncapped Ag NPs are unable to partition through the polysaccharide outer structures of the cells. Spectral features observed for these uncapped Ag NPs are secretions primarily due to the metabolites of purine degradation.
Identifiants
pubmed: 32717522
pii: S1386-1425(20)30721-6
doi: 10.1016/j.saa.2020.118742
pii:
doi:
Substances chimiques
Silver
3M4G523W1G
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
118742Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.