scholarly journals Determination of free fatty acids in brown algae of the White Sea by MALDI-TOF mass spectrometry using Langmuir technology

2019 ◽  
Author(s):  
A.S. Gladchuk ◽  
◽  
P.S. Dubakova ◽  
M.L. Alexandrova ◽  
K.A. Krasnov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Free Fatty Acids ◽  
Brown Algae ◽  
White Sea ◽  
The White Sea ◽  
Maldi Tof Mass Spectrometry ◽  
Maldi Tof

Qualitative determination of early Maillard-products by MALDI-TOF mass spectrometry peptide mapping

2002 ◽  
Vol 215 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Thomas Kislinger ◽  
Andreas Humeny ◽  
Silke Seeber ◽  
Cord-Michael Becker ◽  
Monika Pischetsrieder
Keyword(s):  
Mass Spectrometry ◽  
Peptide Mapping ◽  
Maldi Tof Mass Spectrometry ◽  
Maldi Tof ◽  
Maillard Products ◽  
Qualitative Determination

scholarly journals Study of the Royal Jelly Free Fatty Acids by Liquid Chromatography-High Resolution Mass Spectrometry (LC-HRMS)

Metabolites ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 40 ◽  
Author(s):  
Maroula G. Kokotou ◽  
Christiana Mantzourani ◽  
Rodalia Babaiti ◽  
George Kokotos
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Liquid Chromatography ◽  
High Resolution ◽  
Free Fatty Acids ◽  
Royal Jelly ◽  
High Resolution Mass Spectrometry ◽  
High Resolution Mass ◽  
Resolution Mass

The lipidome of royal jelly (RJ) consists of medium-chained (8–12 carbon atoms) free fatty acids. We present herein a liquid chromatography-high resolution mass spectrometry (HRMS) method that permits the determination of RJ fatty acids and at the same time the detection of suspect fatty acids. The method allows for the direct quantification of seven free fatty acids of RJ, avoiding any derivatization step. It was validated and applied in seven RJ samples, where the major RJ fatty acid trans-10-hydroxy-2-decenoic acid (10-HDA) was found to vary from 0.771 ± 0.08 to 0.928 ± 0.04 g/100 g fresh RJ. Four additional suspect fatty acids were simultaneously detected taking advantage of the HRMS detection.

Determination of sensitivity of microorganisms of the Klebsiella genus to antimicrobial drugs by the MALDI-TOF MS method

Bacteriology ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 8-13
Author(s):  
A.A. Samoilova ◽  
◽  
I.V. Likhachev ◽  
E.V. Zueva ◽  
E.V. Rogacheva ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Antibiotic Resistance ◽  
Mass Spectra ◽  
Antimicrobial Agents ◽  
Antimicrobial Drugs ◽  
Maldi Tof Mass Spectrometry ◽  
Maldi Tof ◽  
Resistance Markers ◽  
Klebsiella Spp

Actual microbiological diagnostics of infections caused by Klebsiella spp. should include isolation of the strain, its identification and fastest possible determination of the pathogen susceptibility to antimicrobial agents. We evaluated the prospects of using MALDI-TOF mass spectrometry to determine the susceptibility of Klebsiella spp. strains to antimicrobial agents. According to the results of mass spectrometry Klebsiella spp. strains analysis, we carried out cluster analysis by the UPGMA method based on mass spectra and data on the susceptibility of the studied strains to antimicrobial agents, and then studied the obtained dendrograms. We identified the areas with the highest probability of the location of antibiotic resistance markers by comparing the mass spectra of susceptible and resistant microorganisms at different concentrations of antimicrobial agents. Thus, using MALDI-TOF mass spectrometry, a new direction in assessing the susceptibility of Klebsiella spp. to antimicrobial agents can be formed. Key words: antibiotic resistance, Klebsiella spp., MALDI-TOF mass spectrometry

Structural similarities of fucoidans from brown algae Silvetia babingtonii and Fucus evanescens, determined by tandem MALDI-TOF mass spectrometry

2012 ◽  
Vol 358 ◽  
pp. 78-81 ◽  
Author(s):  
Stanislav D. Anastyuk ◽  
Natalia M. Shevchenko ◽  
Pavel S. Dmitrenok ◽  
Tatyana N. Zvyagintseva
Keyword(s):  
Mass Spectrometry ◽  
Brown Algae ◽  
Fucus Evanescens ◽  
Maldi Tof Mass Spectrometry ◽  
Maldi Tof
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