title: Core shell stationary phases for a novel separation of triglycerides in plant oils by high performance liquid chromatography with electrospray-quadrupole-time of flight mass spectrometer.
abstract: A new method for the analysis of triglycerides (TAGs) in vegetable oils was developed using a Poroshell 120 EC-C18 column (3.0 mm×50 mm, 2.7 μm) with a high resolution ESI-Q-ToF tandem mass spectrometer as detection system. We used an Agilent Poroshell column, which is characterized by a recently developed stationary phase based on non-porous core particles. The results highlighted the advantages of this column in terms of the dramatic improvement in the number of theoretical plates and in low column backpressure. The developed method enabled us to analyze complex mixtures of more than 40 TAGs within less than 25 min and with a low backpressure (lower than 100 bar), and represents the first application of a core-shell stationary phase in reverse phase HPLC using an ESI-Q-ToF as detection system. The method was optimized on standards of TAGs, validated and applied to several plant oils. By a quantitative point of view, the method showed a very good linearity (r(2)>0.999) in the range 0.1-2.4 μg/g; high intra- and inter-day precision both in terms of retention times (RSD%<0.04%) and peak areas (RSD%<0.3%). Limits of detection and quantitation were lower than 0.03 μg/g and 0.10 μg/g, respectively.
authors: University of Pisa, Department of Chemistry and Industrial Chemistry, Italy.
authors: Jacopo
authors: J
authors: La Nasa
authors: Elisa
authors: E
authors: Ghelardi
authors: Ilaria
authors: I
authors: Degano
authors: Francesca
authors: F
authors: Modugno
authors: Maria Perla
authors: MP
authors: Colombini
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation* / Q000379:methods*; D057230:Limit of Detection; D008970:Molecular Weight; D010938:Plant Oils / Q000737:chemistry*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014280:Triglycerides / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D010938:Plant Oils; D014280:Triglycerides
keywords: Core–shell stationary phase; ESI-Q-ToF; HPLC; Poroshell 120 EC-C18; Triglycerides; Vegetable oils