Collection and identification of an unknown component from Eugenia uniflora essential oil exploiting a multidimensional preparative three-GC system employing apolar, mid-polar and ionic liquid stationary phases

2019 ◽  
Vol 218 ◽  
pp. 101-114 ◽  
Author(s):  
Danilo Sciarrone ◽  
Antonino Schepis ◽  
Gemma De Grazia ◽  
Archimede Rotondo ◽  
Filippo Alibrando ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Essential Oil ◽  
Structure Elucidation ◽  
Stationary Phases ◽  
Eugenia Uniflora ◽  
Unknown Component

MDGC-Prep is used in combination with NMR, GC-FTIR and GC-MS analyses for the structure elucidation of an unknown component from Eugenia uniflora L. essential oil.

Separation of Fatty Acid Dimethyl Esters on an Ionic Liquid Gas Chromatographic Column

2020 ◽  
Author(s):  
R E Pauls ◽  
B Pease
Keyword(s):  
Ionic Liquid ◽  
Fatty Acid ◽  
Stationary Phases ◽  
Carbon Number ◽  
Fatty Acid Esters ◽  
Reaction Products ◽  
Isomer Separation ◽  
Metathesis Reaction ◽  
Polydimethyl Siloxane ◽  
Acid Esters

Abstract An ionic liquid (IL) 111 column was compared with other commonly employed stationary phases including polydimethyl siloxane and polyethylene glycol for the separation of fatty acid monomethyl and dimethyl esters. The fatty acid esters employed in this study were derived from metathesis reactions of vegetable oils both with and without olefins. The IL 111 column demonstrated enhanced performance compared with conventional columns for the separation of these esters. These advantages included significantly enhanced retention of dimethyl esters relative to monomethyl esters, excellent cis/trans isomer separation and the ability to analyze higher carbon number dimethyl esters. As a result, these columns are highly suited for the analysis of mixtures of mono- and dimethyl fatty acid esters found in lipid metathesis reaction products or to determine monofunctional impurities in samples of commercial dimethyl esters.

scholarly journals Blue Tansy Essential Oil: Chemical Composition, Repellent Activity Against Aedes aegypti and Attractant Activity for Ceratitis capitata

2021 ◽  
Vol 16 (2) ◽  
pp. 1934578X2199019 ◽  
Author(s):  
Iris Stappen ◽  
Juergen Wanner ◽  
Nurhayat Tabanca ◽  
Ulrich R. Bernier ◽  
Paul E. Kendra
Keyword(s):  
Essential Oil ◽  
Aedes Aegypti ◽  
Ceratitis Capitata ◽  
Stationary Phases ◽  
Management Strategies ◽  
Fruit Fly ◽  
Effective Dosage ◽  
Mosquito Vector ◽  
Tea Tree ◽  
Potential Applications

Blue tansy essential oil (BTEO) ( Tanacetum annuum L.) was analyzed by GC-MS and GC-FID using two different capillary column stationary phases. Sabinene (14.0%), camphor (13.6%), myrcene (8.0%), β-pinene (7.7%), and chamazulene (6.9%) were the main components using an SE52 column (non-polar). On a polar CW20M phase column, sabinene (15.1%), camphor (14.4%), α-phellandrene (7.9%), β-pinene (7.7%), and myrcene (6.9%) were the most abundant compounds. To assess the oil for potential applications in integrated pest management strategies, behavioral bioassays were conducted to test for repellency against yellow fever mosquito Aedes aegypti, and for attractant activity for Mediterranean fruit fly Ceratitis capitata. Results showed that BTEO was not effective in repelling Ae. aegypti (minimum effective dosage [MED]: 0.625 ± 0.109 mg/cm2 compared with the standard insect repellent DEET (N,N-diethyl-3-methylbenzamide). In assays with male C. capitata, BTEO displayed mild attraction compared with two positive controls (essential oils from tea tree Melaleuca alternifolia and African ginger bush Tetradenia riparia). Additional studies are needed to identify the specific attractant chemicals in BTEO and to determine if they confer a synergistic effect when combined with other known attractants for C. capitata. To the best of our knowledge, this study represents the first investigation of BTEO for repellency against the mosquito vector Ae. aegypti and for attractancy to C. capitata, a major agricultural pest worldwide.

Application of Mobile Phases Containing Ionic Liquid for HPLC Analysis of Selected Isoquinoline Alkaloids

2017 ◽  
Vol 100 (6) ◽  
pp. 1652-1659 ◽  
Author(s):  
Anna Petruczynik ◽  
Justyna Misiurek ◽  
Tomasz Tuzimski ◽  
Monika Waksmundzka-Hajnos
Keyword(s):  
Ionic Liquid ◽  
Stationary Phases ◽  
Reversed Phase ◽  
System Efficiency ◽  
Organic Modifier ◽  
Optimal Conditions ◽  
Retention Behavior ◽  
Isoquinoline Alkaloids ◽  
Mobile Phases ◽  
Chemical Groups

Abstract An HPLC procedure on a polar reversed-phase column with mobile phases containing ionic liquid (IL) was developed for the analysis of selected alkaloids from different chemical groups. We aimed to obtain optimal conditions for the separation of alkaloids because widely used silica-based stationary phases exhibit a silanol effect, rendering analysis of basic analytes extremely difficult. Retention, separation selectivity, peak symmetry, and system efficiency were examined in various eluent systems containing different concentrations of IL and acetonitrile. The obtained results revealed substantial influence from the concentrations of IL, the organic modifier, and temperature on the retention behavior of the investigated alkaloids. The most selective and efficient chromatographic systems were applied for the analysis of several alkaloids in a plant extract.

Fe3O4 sphere-assisted microwave distillation coupled with ionic liquid-based HS-SDME followed by GC-MS for the rapid analysis of essential oil in dried lavender

2018 ◽  
Vol 10 (6) ◽  
pp. 652-659 ◽  
Author(s):  
Jihong Fu ◽  
Yan Zhu ◽  
Bing Liu ◽  
Jun Tang
Keyword(s):  
Ionic Liquid ◽  
Essential Oil ◽  
Rapid Analysis ◽  
Microwave Distillation

Fe3O4 sphere-assisted microwave distillation coupled with ionic liquid-based HS-SDME followed by GC-MS was developed for the rapid analysis of essential oil in dried lavender.

Über die Komponenten des ätherischen Öls aus Majorana hortensis Moench / On the Essential Oil Components from Majorana hortensis Moench

1981 ◽  
Vol 36 (1-2) ◽  
pp. 23-29 ◽  
Author(s):  
Thorolf Brosche ◽  
Otto Vostrowsky ◽  
Fredi Gemeinhardt ◽  
Ullrich Asmus ◽  
Karl Knobloch
Keyword(s):  
Essential Oil ◽  
Structure Elucidation ◽  
Ms Analysis ◽  
Oil Components ◽  
Seasonal Dependence

Abstract By use of 13CNMR, GLC and GC-MS analysis, 75 compounds, mainly mono-and sesquiterpenes, were identified structurally out of the essential oil of Majorana hortensis Moench. A distinct seasonal dependence in the biosynthesis of terpenoids was observed. The specific application of 13CNMR spectroscopy enabled the structure elucidation of components of an essential oil even of that complexity.

Preparation of monodisperse porous polymeric ionic liquid microspheres and their application as stationary phases for HPLC

Talanta ◽  
2020 ◽  
Vol 208 ◽  
pp. 120462 ◽  
Author(s):  
Qiaohong Peng ◽  
Yue Wu ◽  
Hailin Cong ◽  
Youqing Shen ◽  
Khalid Mahmood ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Stationary Phases ◽  
Polymeric Ionic Liquid
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