title: Gas chromatographic analysis of fatty acid methyl esters of milk fat by an ionic liquid derived from L-phenylalanine as the stationary phase.
abstract: A Gas Chromatography (GC) method has been developed for the separation and characterization of the different fatty acids in anhydrous milk fat (AMF) by means of an ionic liquid stationary phase, characterized by a monocationic imidazolium salt derived from L-phenylalanine. The inner surface of a fused silica capillary column was modified using this ionic liquid functionality and 3-aminopropyldiethoxymethyl silane. This coated GC column, which exhibited good thermal stability (270°C) and good efficiency (2700 plates/m), has been characterized using the Abraham solvation parameter model. The intra-day and inter-day precision of the method have been evaluated, obtaining relative standard deviations (RSD) from 0.99% to 4.0% and from 2.8% to 9.2%, respectively. Furthermore, recoveries from 90% and 99% have been achieved.
authors.affiliation: Department of Organic and Inorganic Chemistry, University Jaume I, Avenida Vicent Sos Baynat, 12071 Castellón, Spain. Electronic address: lmendoza@uji.es.
authors.forename: Laura González
authors.initials: LG
authors.lastname: Mendoza
authors.affiliation: Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain. Electronic address: gonzalezalvarezjaime@gmail.com.
authors.forename: Jaime
authors.initials: J
authors.lastname: González-Álvarez
authors.affiliation: Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain. Electronic address: carlabocamar@gmail.com.
authors.forename: Carla Fernández
authors.initials: CF
authors.lastname: Gonzalo
authors.affiliation: Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain. Electronic address: piarab@uniovi.es.
authors.forename: Pilar
authors.initials: P
authors.lastname: Arias-Abrodo
authors.affiliation: Department of Organic and Inorganic Chemistry, University Jaume I, Avenida Vicent Sos Baynat, 12071 Castellón, Spain. Electronic address: altava@qio.uji.es.
authors.forename: Belén
authors.initials: B
authors.lastname: Altava
authors.affiliation: Department of Organic and Inorganic Chemistry, University Jaume I, Avenida Vicent Sos Baynat, 12071 Castellón, Spain. Electronic address: luiss@uji.es.
authors.forename: Santiago V
authors.initials: SV
authors.lastname: Luis
authors.affiliation: Department of Organic and Inorganic Chemistry, University Jaume I, Avenida Vicent Sos Baynat, 12071 Castellón, Spain. Electronic address: burguete@uji.es.
authors.forename: Maria Isabel
authors.initials: MI
authors.lastname: Burguete
authors.affiliation: Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain. Electronic address: loly@uniovi.es.
authors.forename: María Dolores
authors.initials: MD
authors.lastname: Gutiérrez-Álvarez
mesh_terms: D000818:Animals; D002849:Chromatography, Gas / Q000379:methods*; D004355:Drug Stability; D004952:Esters; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D008892:Milk / Q000737:chemistry*; D010649:Phenylalanine / Q000737:chemistry*; D015203:Reproducibility of Results; D012997:Solvents / Q000737:chemistry; D013696:Temperature
chemical_list: D004952:Esters; D005227:Fatty Acids; D052578:Ionic Liquids; D012997:Solvents; D010649:Phenylalanine
keywords: Fatty acids; Gas chromatography; Ionic liquids; Solvation parameter model; Stationary phases