title: Biosorption of silver cations onto Lactococcus lactis and Lactobacillus casei isolated from dairy products.
abstract: The current work deals with the phenomenon of silver cations uptake by two kinds of bacteria isolated from dairy products. The mechanism of sorption of silver cations by Lactococcus lactis and Lactobacillus casei bacteria was investigated. Inductively coupled plasma-mass spectrometry (ICP-MS) was used for determination of silver concentration sorbed by bacteria. Analysis of charge distribution was conducted by diffraction light scattering method. Changes in the ultrastructure of Lactococcus lactis and Lactobacillus casei cells after treatment with silver cations were investigated using transmission electron microscopy observation. Molecular spectroscopy methods, namely Fourier transform-infrared spectroscopy (FT-IR) and matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) were employed for description of the sorption mechanism. Moreover, an analysis of volatile organic compounds (VOCs) extracted from bacterial cells was performed.
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Maciej
authors.initials: M
authors.lastname: Milanowski
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Paweł
authors.initials: P
authors.lastname: Pomastowski
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Viorica
authors.initials: V
authors.lastname: Railean-Plugaru
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Rafińska
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Ligor
authors.affiliation: Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.|Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland.
authors.forename: Bogusław
authors.initials: B
authors.lastname: Buszewski
mesh_terms: D002412:Cations / Q000378:metabolism*; D003611:Dairy Products / Q000382:microbiology; D007780:Lacticaseibacillus casei / Q000378:metabolism*; D013294:Lactococcus lactis / Q000378:metabolism*; D012834:Silver / Q000378:metabolism*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D002412:Cations; D012834:Silver