Properties of columns with several pyridinium and imidazolium ionic liquid stationary phases

Шашков, М. В.; Sidelnikov, V. N.

doi:10.1016/j.chroma.2013.08.030

Cited by 45 publications

(24 citation statements)

References 33 publications

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“…The second-dimension IL column was 2MPyC 9 . As was shown in our earlier study, this IL has high polarity and provides good separation of phenols [16].…”

Section: Analysis Of Coal Pyrolysis Products On Hp-5/2mpyc 9 Columnssupporting

confidence: 71%

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Separation of phenol-containing pyrolysis products using comprehensive two-dimensional chromatography with columns based on pyridinium ionic liquids

Шашков

Sidelnikov

2016

J. Sep. Science

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We describe the application of columns with highly polar stationary liquid phases based on pyridinium ionic liquids for the two-dimensional chromatography separation of bio-oil and product of coal pyrolysis. By using inverse combination columns-a first ionic liquid column and a second nonpolar column-good separation results have been obtained. In the analysis of coal pyrolysis products, the suggested approach provides a much better resolution between components in comparison with a less polar first-dimension column (based on polyethylene glycol). A good selectivity for the peaks of phenols is observed, and the group of phenols is well detached and separated from the group of diaromatics. A good separation picture was obtained also for bio-oil, the groups of phenols and guaiacol derivatives are distinguished with good resolution of substances within each group.

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“…The second-dimension IL column was 2MPyC 9 . As was shown in our earlier study, this IL has high polarity and provides good separation of phenols [16].…”

Section: Analysis Of Coal Pyrolysis Products On Hp-5/2mpyc 9 Columnssupporting

confidence: 71%

“…Separation for the 4Me‐phenol/3Me‐phenol pair is slightly better in the case of ZB‐WAX column. This may be related to a higher efficiency of this column, because its selectivity for polar compounds was shown to be lower as compared to IL columns .…”

Section: D Resolutionmentioning

confidence: 99%

Separation of phenol-containing pyrolysis products using comprehensive two-dimensional chromatography with columns based on pyridinium ionic liquids

Шашков

Sidelnikov

2016

J. Sep. Science

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“…It is worth noting that using ionic liquid columns as the first column achieves more quality and complete separation of complex mixtures (Purcaro, Cordero, Liberto, Bicchi, & Conte, 2014;Seeley et al, 2008). For the separation of Pituranthos scoparius' components, it has been suggested to use pyridinium ionic liquids developed by (Shashkov and Sidelnikov, 2013), because this class of stationary phases has shown high-polarity and selectivity for oxygen-containing compounds. As the first column was suggested to use dicationic pyridinium ionic liquid 4MPyC6, the second one was nonpolar siloxane HP-5.…”

Section: Gc 3 Gc Analysismentioning

confidence: 99%

Antioxidant effect induced by the essential oil ofPituranthos scopariusin a formulation of a whey spread emulsion

Chikhoune

Pavleca

Шашков³

et al. 2017

Journal of Food Processing and Preservation

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This study falls within the framework of industrial exploitation of the essential oil recovered from Pituranthos scoparius. Chromatographic techniques, namely TLC, HPTLC, MHE‐GC‐FID‐MS, GC X GC, and GC‐FID‐MS have been used for the characterization, identification and quantification of 48 compounds, divided into three major terpene groups: monoterpenes, diterpenes, and oxygenated compounds. The essential oil displayed an antioxidant activity, presented by a radical scavenging activity and evaluated by the TLC–DPPH• method. Tests conducted at laboratory scale showed high protection from lipid oxidation of the spread emulsion, with an oxidative stability of 20.82 h. A sensory evaluation was carried out on emulsions incorporated with the essential oil. The PCA analysis revealed the effect of some attributes on the segregation between the four emulsions formulated. These data suggest that the essential oil of Pituranthos scoparius is a possible and promising candidate as a biopreservative at an industrial scale for food preservation. Practical applications Essential oil of Pituranthos scoparius is traditionally used in folk medicine as a remedy for several illnesses. Its antibacterial properties are also exploited in the preservation of traditional cheese making. Whey is a by‐product of cheese and casein industries, still considered as a waste. Valorization of this by‐product in a whey spread emulsion is considered in the present work. Due to the bioactive compounds contained in the essential oil (such as terpinen‐4‐ol), the essential oil exhibits high antioxidant activity. As oxidation phenomena becomes a topical issue in fat and oil food industry, natural plants containing essential oils with high antioxidant properties are considered as good alternatives to synthetic antioxidants.

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“…An ionic liquid (IL), 1‐methyl‐3‐tetradecylimidazolium chloride (C 14 MImCl), which has a long alkyl chain on the cation, was used in this work as an additive in the BGE to reverse the direction of the EOF, and detection of the chelated metals was performed in reverse polarity separation mode. Nowadays ILs have numerous chemical applications and are used in various analytical techniques including HPLC, GC, and MS . ILs also serve as BGE additives in CE in the analysis of different samples .…”

Section: Introductionmentioning

confidence: 99%

Determination of metal content in superoxide dismutase enzymes by capillary electrophoresis†

Kazarjan

Vaher

Hunter

et al. 2015

J of Separation Science

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Superoxide dismutases are antioxidant scavenger enzymes that contain a metal cofactor (copper, zinc, iron, and manganese) in their active site. Metal content measurement is one of the essential steps to characterize enzyme biological activity. We have developed a capillary electrophoretic protocol for the determination of the metal content in superoxide dismutase enzymes. The background electrolyte containing 10 mM pyridine-2,6-dicarboxylic acid and 1 mM 1-methyl-3-tetradecylimidazolium chloride at pH 3.8 was optimized for on-column complexation of the above-mentioned metals. The minimum detectable levels of metals ranged from 0.3 to 1.2 μg/mL. The reliability of the method was checked by parallel quantitative determination of the metal content in superoxide dismutase enzymes by graphite furnace or flame atomic absorption spectrophotometry methods.

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Properties of columns with several pyridinium and imidazolium ionic liquid stationary phases

Cited by 45 publications

References 33 publications

Separation of phenol-containing pyrolysis products using comprehensive two-dimensional chromatography with columns based on pyridinium ionic liquids

Separation of phenol-containing pyrolysis products using comprehensive two-dimensional chromatography with columns based on pyridinium ionic liquids

Antioxidant effect induced by the essential oil ofPituranthos scopariusin a formulation of a whey spread emulsion

Determination of metal content in superoxide dismutase enzymes by capillary electrophoresis†

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