Some rules for the elution of organic compounds on chromatographic columns containing colloidal stationary phases

1972 ◽  
Vol 21 (5) ◽  
pp. 1121-1123
Author(s):  
R. N. Martynyuk ◽  
M. S. Vigdergauz
Keyword(s):  
Organic Compounds ◽  
Stationary Phases ◽  
Chromatographic Columns

scholarly journals Thermophilic and non-thermophilic Campylobacter species Emits Distinct Volatile Organic Compounds in Different Culture Media and Growth Phases

2022 ◽  
Author(s):  
Filipe Magnum Silva Dos Santos ◽  
Kah Hin Low ◽  
Lay Ching Chai
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Foodborne Pathogens ◽  
Culture Media ◽  
Stationary Phases ◽  
Brain Heart Infusion ◽  
Thermophilic Campylobacter ◽  
Volatile Organic ◽  
Great Persistence ◽  
Interkingdom Communication

Abstract Bacteria emits a multitude of volatile organic compounds (VOCs) into the headspace as a mean of interactions with the environments, as well as intra- and interkingdom communication for survival and persistence in the nature and within their hosts. Campylobacter, which is often found in poultry and ruminants, has shown great persistence in aquatic environments, making it one of the world's most dangerous foodborne pathogens, killing thousands of people annually. In this study, the VOCs emitted by both thermophilic (C. jejuni, C. coli and C. lari) and non-thermophilic Campylobacter (C. fetus) of clinical concerns, impacted by nutrients composition (media) and growth phase were identified. Most thermophilic Campylobacter were shown to release volatile alcohols and ketones (1s,4R,7R,11R-1,3,4,7-Tetramethyltricyclo [5.3.1.0(4,11)] undec-2-en-8-one and Isophorone) during early stationary and stationary phases using active sampling with active charcoal adsorbent and GC-MS analysis. C. jejuni cultured in the Brain Heart Infusion had 1-Heptadecanol in its headspace gas, but not in Bolton Broth. The non-thermophilic C. fetus did not produce alcohols or ketones, but rather a variety of unidentified chemicals that will require further investigation in the future. Overall, PCA analysis revealed that the five Campylobacter strains studied created distinct volatilomes, allowing for future Campylobacter identification based on VOCs.

scholarly journals Testing the capabilities of the Mars Organic Molecule Analyser (MOMA) chromatographic columns for the separation of organic compounds on Mars

2020 ◽  
Vol 186 ◽  
pp. 104903
Author(s):  
Melissa Guzman ◽  
Cyril Szopa ◽  
Caroline Freissinet ◽  
Arnaud Buch ◽  
Fabien Stalport ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Organic Molecule ◽  
Chromatographic Columns

SOIL CHROMATOGRAPHIC COLUMNS TO ASSESS THE MOBILITY OF SYNTHETIC ORGANIC COMPOUNDS

Soil Science ◽  
1992 ◽  
Vol 154 (2) ◽  
pp. 145-150 ◽  
Author(s):  
N. B. STOLPE ◽  
P. J. SHEA ◽  
D. T. LEWIS ◽  
D. L. MCCALLISTER
Keyword(s):  
Organic Compounds ◽  
Chromatographic Columns ◽  
Synthetic Organic Compounds
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