Silver and/or copper vermiculites and their antibacterial effect

Title:

Silver and/or copper vermiculites and their antibacterial effect

Creator:

Hundáková, Marianna, Marta Valášková, Tomášek, Vladimír, Erich Pazdziora, and Matějová, Kateřina

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:f3b1d935-155b-42ba-895a-68f3182aceda
uuid:f3b1d935-155b-42ba-895a-68f3182aceda
doi:10.13168/AGG.2013.0009
issn:1214-9705

Subject:

Geologie. Meteorologie. Klimatologie, vermikulit, stříbro, měď, vermiculite, silver, copper, structure characterization, antibacterial effect, 7, and 551

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

Vermiculite (V) from Brazil with aqueous solutions AgNO3 and/or Cu(NO3)2 was used for preparation of nanocomposites V/Ag, V/Cu, V/AgCu and V/CuAg using two procedures and their effect on bacteria was compared. Structural changes were evaluated using X-ray diffraction (XRD) analysis, Infrared spectroscopy (IRS) and Scanning electron microscopy (SEM). Elemental chemical composition was determined using X-ray fluorescence (XRF) analysis and the solutions were analyzed by Atomic emission spectroscopy with inductively coupled plasma (AES-ICP). Antibacterial properties of Ag- and Cu-vermiculites and combined Ag/Cu-vermiculites were tested on two bacteria groups: (1) Gram-positive, G+, (Staphylococcus aureus and Enterococcus faecalis) and (2) Gram-negative, G-, (Pseudomonas aeruginosa and Klebsiella pneumoniae). The samples under antibacterial testing showed different effective times and minimum inhibitory concentration (MIC) values. The Gram-negative bacteria showed higher sensitivity to the prepared samples than Gram-positive bacteria. The combined Cu/Ag vermiculites stopped the bacterial growth at lower MIC value., Marianna Hundáková, Marta Valášková, Vladimír Tomášek, Erich Pazdziora and Kateřina Matějová., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2013 Volume:10 | Number:1 (169)

Harvested from:

CDK

Metadata only:

false