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Balgoma D, Guitton Y, Evans JJ, Le Bizec B, Dervilly-Pinel G, Meynier A. Modeling the fragmentation patterns of triacylglycerides in mass spectrometry allows the quantification of the regioisomers with a minimal number of standards. Anal Chim Acta 2019; 1057:60-69. [DOI: 10.1016/j.aca.2019.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/21/2018] [Accepted: 01/07/2019] [Indexed: 11/30/2022]
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2
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Liu Z, Rochfort S, Cocks B. Milk lipidomics: What we know and what we don't. Prog Lipid Res 2018; 71:70-85. [DOI: 10.1016/j.plipres.2018.06.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 02/07/2023]
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3
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Sirbu D, Corno M, Ullrich MS, Kuhnert N. Characterization of triacylglycerols in unfermented cocoa beans by HPLC-ESI mass spectrometry. Food Chem 2018; 254:232-240. [DOI: 10.1016/j.foodchem.2018.01.194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/25/2018] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
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4
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Judge EJ, Zheng D, Chivukula S, Gakwaya R, Schostarez S, Li X, Liriano M, Evans JJ. A simple and economical strategy for obtaining calibration plots for relative quantification of positional isomers of YYX/YXY triglycerides using high-performance liquid chromatography/tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2017; 31:1690-1698. [PMID: 28792632 DOI: 10.1002/rcm.7953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/26/2017] [Accepted: 08/04/2017] [Indexed: 06/07/2023]
Abstract
RATIONALE Positional analysis of intact triglycerides could provide greater insights into the link between fatty acid position and lipotoxic diseases. However, this methodology has been impeded by lack of commercial availability of positionally pure triglycerides. This work reports on a strategy for defining calibration plots for YXY/YYX triglyceride systems based on the product ion intensities in the collision-induced dissociation spectra of ammoniated precursor ions. METHODS A set of triglycerides were synthesized and analyzed by electrospray ionization tandem mass spectrometry using an ion trap mass spectrometer. The product ion spectra of the ammoniated precursor ions were collected for 42 triglyceride systems of the form YXY/YYX, where Y represents C16:0 , C18:1(c-9) and C20:4(cccc-5,8,11,14) . Three-point calibration plots were prepared by plotting the relative abundance of the YY+ product ion vs. the relative abundance of the YYX positional isomer. RESULTS The calibration plots were shown to give relative abundances of positional isomers accurate to within ±0.02 for most systems. Using an ion trap, under a controlled set of collision parameters, the slopes of the calibration plots can be used to compare the sensitivities of the product ion intensities to fatty acid position for various triglyceride systems. The average slopes of the calibration plots for the C16:0 , C18:1(c-9) and C20:4(cccc-5,8,11,14) systems were 0.29 ± 0.05, 0.21 ± 0.05 and 0.045 ± 0.005, respectively. CONCLUSIONS While the presence of multiple unsaturated fatty acids tends to slightly decrease the slopes of the calibration plots, the data suggest that the sensitivities are sufficient for performing positional analysis of most triglyceride systems. However, the presence of unsaturated fatty acids that contain double bonds close to the carbonyl group, such as arachidonic acid, tends to dramatically decrease positional sensitivity.
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Affiliation(s)
- Elizabeth J Judge
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Dong Zheng
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Swathilekha Chivukula
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Robert Gakwaya
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Sarah Schostarez
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Xingwen Li
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Melissa Liriano
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
| | - Jason J Evans
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125, USA
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Separation and identification of fatty acid esters of algal carotenoid metabolites in the freshwater mussel Dreissena bugensis , by liquid chromatography with ultraviolet/visible wavelength and mass spectrometric detectors in series. J Chromatogr A 2017; 1513:93-106. [DOI: 10.1016/j.chroma.2017.07.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/27/2017] [Accepted: 07/06/2017] [Indexed: 11/19/2022]
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6
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Kühbandner S, Ruther J. Solid Phase Micro-extraction (SPME) with In Situ Transesterification: An Easy Method for the Detection of Non-volatile Fatty Acid Derivatives on the Insect Cuticle. J Chem Ecol 2015; 41:584-92. [DOI: 10.1007/s10886-015-0592-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 11/27/2022]
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7
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Localization of double bonds in triacylglycerols using high-performance liquid chromatography/atmospheric pressure chemical ionization ion-trap mass spectrometry. Anal Bioanal Chem 2015; 407:5175-88. [PMID: 25701424 DOI: 10.1007/s00216-015-8537-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/28/2015] [Accepted: 02/05/2015] [Indexed: 01/25/2023]
Abstract
A method for localizing double bonds in triacylglycerols using high-performance liquid chromatography-tandem mass spectrometry with atmospheric pressure chemical ionization (APCI) was developed. The technique was based on collision-induced dissociation or pulsed Q collision-induced dissociation of the C3H5N(+•) adducts ([M + 55](+•)) formed in the presence of acetonitrile in the APCI source. The spectra were investigated using a large series of standards obtained from commercial sources and prepared by randomization. The fragmentation spectra made it possible to determine (i) the total number of carbons and double bonds in the molecule, (ii) the number of carbons and double bonds in acyls, (iii) the acyl in the sn-2 position on the glycerol backbone, and (iv) the double-bond positions in acyls. The double-bond positions were determined based on two types of fragments (alpha and omega ions) formed by cleavages of C-C bonds vinylic to the original double bond. The composition of the acyls and their positions on glycerol were established from the masses and intensities of the ions formed by the elimination of fatty acids from the [M + 55](+•) precursor. The method was applied for the analysis of triacylglycerols in olive oil and vernix caseosa.
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8
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Kofroňová E, Nekola A, Cvačka J, Kindl J, Valterová I. Fatty acids from pool lipids as possible precursors of the male marking pheromone in bumblebees. Molecules 2014; 19:2330-43. [PMID: 24566306 PMCID: PMC6271375 DOI: 10.3390/molecules19022330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 02/14/2014] [Accepted: 02/14/2014] [Indexed: 11/17/2022] Open
Abstract
Triacylglycerols (TGs) stored in the fat bodies of bumblebee males have a species-specific composition. The striking structural similarities between TG fatty acids (FAs) and components of the male marking pheromone in certain species led to the hypothesis that FAs may serve as precursors in pheromone biosynthesis. Here, we analysed TGs from B.ruderatus, B. bohemicus, and B. campestris. Nonadec-9-ene and icos-15-en-1-ol are the main components of B. ruderatus labial gland secretion, forming up to 92% of the gland extract. The corresponding icos-11-enic and icos-15-enic acids were found in TGs at levels higher than usual for bumblebee species. We found similar relationships in B. campestris and B. bohemicus. These results suggest that FAs might be precursors of aliphatic compounds in the male pheromones. Furthermore, we report for the first time the pheromone structure of B. ruderatus males.
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Affiliation(s)
- Edita Kofroňová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 166 10, Czech Republic.
| | - Adam Nekola
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 166 10, Czech Republic.
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 166 10, Czech Republic.
| | - Jiří Kindl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 166 10, Czech Republic.
| | - Irena Valterová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 166 10, Czech Republic.
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9
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Quadruple parallel mass spectrometry for analysis of vitamin D and triacylglycerols in a dietary supplement. J Chromatogr A 2013; 1320:48-65. [DOI: 10.1016/j.chroma.2013.10.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 09/24/2013] [Accepted: 10/09/2013] [Indexed: 11/15/2022]
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10
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Nagy K, Sandoz L, Destaillats F, Schafer O. Mapping the regioisomeric distribution of fatty acids in triacylglycerols by hybrid mass spectrometry. J Lipid Res 2012; 54:290-305. [PMID: 23093552 DOI: 10.1194/jlr.d031484] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study describes the use of hybrid mass spectrometry for the mapping, identification, and semi-quantitation of triacylglycerol regioisomers in fats and oils. The identification was performed based on the accurate mass and fragmentation pattern obtained by data-dependent fragmentation. Quantitation was based on the high-resolution ion chromatograms, and relative proportion of sn-1(3)/sn-2 regioisomers was calculated based on generalized fragmentation models and the relative intensities observed in the product ion spectra. The key performance features of the developed method are inter-batch mass accuracy < 1 ppm (n = 10); lower limit of detection (triggering threshold) 0.1 μg/ml (equivalent to 0.2 weight % in oil); lower limit of quantitation 0.2 μg/ml (equivalent to 0.4 weight % in oil); peak area precision 6.5% at 2 μg/ml concentration and 15% at 0.2 μM concentration; inter-batch precision of fragment intensities < 1% (n = 10) independent of the investigated concentration; and averaged accuracy using the generic calibration 3.8% in the 1-10 μg/ml range and varies between 1-23% depending on analytes. Inter-esterified fat, beef tallow, pork lard, and butter fat samples were used to show how well regioisomeric distribution of palmitic acid can be captured by this method.
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Affiliation(s)
- Kornél Nagy
- Food Science and Technology Department; Nestlé Research Center, Nestec Ltd., Lausanne, Switzerland.
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11
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Hellmuth C, Uhl O, Segura-Moreno M, Demmelmair H, Koletzko B. Determination of acylglycerols from biological samples with chromatography-based methods. J Sep Sci 2011; 34:3470-83. [DOI: 10.1002/jssc.201100556] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 08/08/2011] [Accepted: 08/09/2011] [Indexed: 12/15/2022]
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12
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Jiroš P, Cvačka J, Hanus R, Kindl J, Kofroňová E, Valterová I. Changes in the composition of triacylglycerols in the fat bodies of bumblebee males during their lifetime. Lipids 2011; 46:863-71. [PMID: 21720931 DOI: 10.1007/s11745-011-3581-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 06/08/2011] [Indexed: 10/18/2022]
Abstract
The age-dependent changes in the composition of triacylglycerols (TAG) in the fat bodies of bumblebee males were studied using HPLC/MS. Two related species (Bombus terrestris and B. lucorum) were compared, with the age of the males being 0-30 days. The total amount of TAG in B. lucorum was about 2.7 times higher than that in B. terrestris for all of the ages studied. One to three-day-old males had the highest content of TAG in their fat bodies (1.6-2.3 mg/individual in B. terrestris and 3.8-4.2 mg/individual in B. lucorum). The analytical data show different patterns in both species. The qualitative composition of fatty acids in TAG was similar, but the mean relative abundance between B. terrestris and B. lucorum differed: 14:0, 7 and 14%; 16:0, 20 and 44%; 18:3, 62 and 23%; 18:1, 3 and 8%, respectively (the data is based on a GC/MS integration). A statistical evaluation of the dynamic changes in the TAG composition revealed that in B. terrestris different age classes were well separated according to their TAG composition while in B. lucorum the TAG did not change substantially during the male's life. The TAG analyses provide more precise information on the differences between the classes studied than the FA composition alone.
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Affiliation(s)
- Pavel Jiroš
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
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13
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Murphy RC, Leiker TJ, Barkley RM. Glycerolipid and cholesterol ester analyses in biological samples by mass spectrometry. Biochim Biophys Acta Mol Cell Biol Lipids 2011; 1811:776-83. [PMID: 21757029 DOI: 10.1016/j.bbalip.2011.06.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 06/14/2011] [Accepted: 06/15/2011] [Indexed: 10/18/2022]
Abstract
Neutral lipids are a diverse family of hydrophobic biomolecules that have important roles in cellular biochemistry of all living species but have in common the property of charge neutrality. A large component of neutral lipids is the glycerolipids composed of triacylglycerols, diacylglycerols, and monoacylglycerols that can serve as cellular energy stores as well as signaling molecules. Another abundant lipid class in many cells is the cholesterol esters that are on one hand sterols and the other fatty acyl lipids, but in either case are neutral lipids involved in cholesterol homeostasis and transport in the blood. The analysis of these molecules in the context of lipidomics remains challenging because of their charge neutrality and the complex mixtures of molecular species present in cells. Various techniques have been used to ionize these neutral lipids prior to mass spectrometric analysis including electron ionization, atmospheric chemical ionization, electrospray ionization and matrix assisted laser desorption/ionization. Various approaches to deal with the complex mixture of molecular species have been developed including shotgun lipidomics and chromatographic-based separations such as gas chromatography, reversed phase liquid chromatography, and normal phase liquid chromatography. Several applications of these approaches are discussed. .
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Affiliation(s)
- Robert C Murphy
- Department of Pharmacology, University of Colorado, Denver, CO, USA.
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Stránský K, Valterová I, Kofroňová E, Urbanová K, Zarevúcka M, Wimmer Z. Non-polar lipid components of human cerumen. Lipids 2011; 46:781-8. [PMID: 21547555 DOI: 10.1007/s11745-011-3564-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 04/19/2011] [Indexed: 11/28/2022]
Abstract
Human cerumen was separated by column chromatography into the following groups of compounds: hydrocarbons, squalene, wax esters and cholesterol esters, triacylglycerols, free fatty acids, free fatty alcohols, monoacylglycerols, free cholesterol, free sterols, and free hydroxy acids. The groups of compounds obtained were examined in detail by gas chromatography and gas chromatography-mass spectrometry. In total, about one thousand compounds have been identified.
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Affiliation(s)
- Karel Stránský
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
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Bou Khalil M, Hou W, Zhou H, Elisma F, Swayne LA, Blanchard AP, Yao Z, Bennett SAL, Figeys D. Lipidomics era: accomplishments and challenges. MASS SPECTROMETRY REVIEWS 2010; 29:877-929. [PMID: 20931646 DOI: 10.1002/mas.20294] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Lipid mediators participate in signal transduction pathways, proliferation, apoptosis, and membrane trafficking in the cell. Lipids are highly complex and diverse owing to the various combinations of polar headgroups, fatty acyl chains, and backbone structures. This structural diversity continues to pose a challenge for lipid analysis. Here we review the current state of the art in lipidomics research and discuss the challenges facing this field. The latest technological developments in mass spectrometry, the role of bioinformatics, and the applications of lipidomics in lipid metabolism and cellular physiology and pathology are also discussed.
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Affiliation(s)
- Maroun Bou Khalil
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, Canada K1H 8M5
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Optimization and application of methods of triacylglycerol evaluation for characterization of olive oil adulteration by soybean oil with HPLC–APCI-MS–MS. Talanta 2010; 81:1116-25. [DOI: 10.1016/j.talanta.2010.02.006] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Revised: 02/02/2010] [Accepted: 02/03/2010] [Indexed: 11/19/2022]
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17
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Kofroňová E, Cvačka J, Vrkoslav V, Hanus R, Jiroš P, Kindl J, Hovorka O, Valterová I. A comparison of HPLC/APCI-MS and MALDI-MS for characterising triacylglycerols in insects: Species-specific composition of lipids in the fat bodies of bumblebee males. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:3878-84. [PMID: 19819198 DOI: 10.1016/j.jchromb.2009.09.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Revised: 09/11/2009] [Accepted: 09/22/2009] [Indexed: 11/27/2022]
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18
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Computer-assisted interpretation of triacylglycerols mass spectra. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2009. [PMID: 19784607 DOI: 10.1007/978-1-60761-325-1_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register]
Abstract
Triacylglycerols (TGs) are principal components of vegetable oils and animal fats. Natural TGs form extremely complex mixtures composed of tens or hundreds of molecular species. HPLC/MS suits well for their analyses, but manual data processing is laborious and time-consuming. Specialized software algorithms are needed to accelerate the interpretation process. Here we present software named TriglyAPCI for interpreting APCI, APPI, or ESI MS/MS spectra of TGs. The chapter shows how to build and use the software, what are its advantages and limitations. The algorithm uses diacylglycerol fragments and molecular adducts for determining TG structure. Each ion in a spectrum is tested whether it might be a fragment or a molecular adduct. If so, the number of carbons and double bonds is assigned to it. The relations among the ions are searched and possible structures are suggested. TriglyAPCI allows interpreting spectra of single compounds, mixtures, or incomplete spectra lacking one of the diagnostic ions. The fragment intensities are used to distinguish regioisomers. An efficient chromatographic separation of TGs is shown to be crucial for correct spectra interpretation and avoiding false positive results. TriglyAPCI performance is demonstrated for HPLC/APCI-MS data of TGs isolated from bumblebee Bombus rupestris.
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Jedlicka P, Cvacka J, Sláma K. Juvenile hormone-stimulated synthesis of acyl-glycerols and vitamin E in female accessory sexual glands of the fire bug, Pyrrhocoris apterus L. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2009; 72:48-59. [PMID: 19557854 DOI: 10.1002/arch.20322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Secretory cells of the female accessory sexual glands (AG) of P. apterus grow and produce yellow oily exocrine secretion in response to stimulation by endogenous juvenile hormone (JH) or exogenous treatments by JH analogues. The secretion determines the property of future egg shells by coating the chorion surface of the oocytes that are passing individually through the common uterus during oviposition. Diapausing females with a physiologically inhibited endocrine system or females with artificially removed hormonal sources show inactive ovaries and empty AG without the secretory products. Ovary-ectomised females with the intact neuroendocrine system develop hypertrophic AG loaded with the oily secretion. This shows that there is no direct dependence between formation of the oily secretion in AG and ovarian growth. Chemical analysis of the secretory products revealed the presence of acetylated glycerols, with the most abundant stearoyl-diacetyl-glycerol, stearoyl-acetyl-propionyl-glycerol, and the corresponding derivatives of arachidonic acid. In addition to this, the JH-activated secretory cells of AG also produced gamma- and delta-tocopherols. The possible antioxidant or antimutagenic action of these vitamin E compounds in insect reproduction has been emphasized.
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Affiliation(s)
- Pavel Jedlicka
- Biological Centre of Czech Academy of Sciences, Institute of Entomology, Ceské Budejovice, Czech Republic.
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Kofroňová E, Cvačka J, Jiroš P, Sýkora D, Valterová I. Analysis of insect triacylglycerols using liquid chromatography-atmospheric pressure chemical ionization-mass spectrometry. EUR J LIPID SCI TECH 2009. [DOI: 10.1002/ejlt.200800228] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Hou W, Zhou H, Elisma F, Bennett SAL, Figeys D. Technological developments in lipidomics. BRIEFINGS IN FUNCTIONAL GENOMICS AND PROTEOMICS 2008; 7:395-409. [DOI: 10.1093/bfgp/eln042] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lísa M, Holcapek M. Triacylglycerols profiling in plant oils important in food industry, dietetics and cosmetics using high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry. J Chromatogr A 2008; 1198-1199:115-30. [PMID: 18539288 DOI: 10.1016/j.chroma.2008.05.037] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2008] [Revised: 05/13/2008] [Accepted: 05/16/2008] [Indexed: 10/22/2022]
Abstract
Optimized non-aqueous reversed-phase high-performance liquid chromatography method using acetonitrile-2-propanol gradient elution and the column coupling in the total length of 45 cm has been applied for the high resolution separation of plant oils important in food industry, dietetics and cosmetics. Positive-ion atmospheric pressure chemical ionization mass spectrometry is used for the unambiguous identification and also the reliable quantitation with the response factors approach. Based on the precise determination of individual triacyglycerol concentrations, the calculation of average parameters important in the nutrition is performed, i.e. average carbon number, average double bond number, relative concentrations of essential, saturated, monounsaturated and polyunsaturated fatty acids. Results are reported in the form of both chromatographic fingerprints and tables containing relative concentrations for all triacylglycerols and fatty acids in individual samples. In total, 264 triacylglycerols consisting of 28 fatty acids with the alkyl chain length from 6 to 26 carbon atoms and 0 to 4 double bonds have been identified in 26 industrial important plant oils.
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Affiliation(s)
- Miroslav Lísa
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Nám. Cs. Legií 565, 53210 Pardubice, Czech Republic
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Cvačka J, Kofroňová E, Vašíčková S, Stránský K, Jiroš P, Hovorka O, Kindl J, Valterová I. Unusual Fatty Acids in the Fat Body of the Early Nesting Bumblebee, Bombus pratorum. Lipids 2008; 43:441-50. [PMID: 18365265 DOI: 10.1007/s11745-008-3174-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2007] [Accepted: 03/06/2008] [Indexed: 10/22/2022]
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:689-700. [PMID: 17474104 DOI: 10.1002/jms.1074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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