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Analysis of milk with liquid chromatography–mass spectrometry: a review. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-022-04197-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
AbstractAs a widely consumed foodstuff, milk and dairy products are increasingly studied over the years. At the present time, milk profiling is used as a benchmark to assess the properties of milk. Modern biomolecular mass spectrometers have become invaluable to fully characterize the milk composition. This review reports the analysis of milk and its components using liquid chromatography coupled with mass spectrometry (LC–MS). LC–MS analysis as a whole will be discussed subdivided into the major constituents of milk, namely, lipids, proteins, sugars and the mineral fraction.
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Korma SA, Li L, Wei W, Liu P, Zhang X, Bakry IA, An P, Abdrabo KAE, Manzoor MF, Umair M, Cacciotti I, Lorenzo JM, Conte-Junior CA. A Comparative Study of Milk Fat Extracted from the Milk of Different Goat Breeds in China: Fatty Acids, Triacylglycerols and Thermal and Spectroscopic Characterization. Biomolecules 2022; 12:biom12050730. [PMID: 35625657 PMCID: PMC9138446 DOI: 10.3390/biom12050730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022] Open
Abstract
Goat milk (GM) is an excellent alternative to cow milk and has recently been used in commercial infant formula preparation due to its superior fat composition. Here, the fatty acid (FA) composition, triacylglycerol (TAG) molecular species, thermal behavior and infrared spectra of extracted milk fat from the milk of the two main breeds of dairy goat bred in China (Guanzhong GM (GZG) and Xinong Saanen GM (XSG)) are investigated. Gas chromatography, Fourier-transform infrared spectroscopy, differential scanning calorimetry and ultra-performance convergence chromatography with quadrupole time-of-flight mass spectrometry are applied. The obtained results evidence significant fat compositional differences based on the breed that produced the considered GM. The major FAs in both GM fats were capric (C10:0), myristic (C14:0), palmitic (C16:0), stearic (C18:0) and oleic (C18:1 n-9c). GZG presented a higher content of medium-chain saturated FAs, while XSG had higher unsaturated FAs with higher ratios of L/Ln and n-6/n-3. A total of 339 and 359 TAGs were detected and quantified in GZG and XSG, and the major TAGs were those of m/z 740.6712 (14.10 ± 0.27%) and m/z 684.6094 (10.94 ± 0.02%), respectively. Milk TAGs of GZG and XSG showed 24–54 and 26–54 total acyl carbon numbers with a 0–4 and 0–5 double bond number at 68 and 72 various retention times, respectively. Thermal analysis showed that all GM fat samples melted below normal body temperature. Infrared spectra revealed higher absorption values of GZG milk fat. This study provides valuable information to the dairy industry sector about GM fat produced in China, assessing the appropriateness of Chinese GM fat to be applied in Chinese infant formula.
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Affiliation(s)
- Sameh A. Korma
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
- Department of Food Science, Faculty of Agriculture, Zagazig University, Zagazig 44519, Egypt
| | - Li Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
- Sino-Singapore International Joint Research Institute, Guangzhou 510000, China
- Correspondence: (L.L.); (W.W.); Tel.: +86-208-711-4262 (L.L.); +86-510-858-767-99 (W.W.)
| | - Wei Wei
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
- Correspondence: (L.L.); (W.W.); Tel.: +86-208-711-4262 (L.L.); +86-510-858-767-99 (W.W.)
| | - Pengzhan Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
| | - Xinghe Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
| | - Ibrahim A. Bakry
- Department of Food and Dairy Technology, Faculty of Technology and Development, Zagazig University, Zagazig 44519, Egypt;
| | - Peipei An
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
| | - Khaled A. E. Abdrabo
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
| | - Muhammad Faisal Manzoor
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; (S.A.K.); (P.L.); (P.A.); (K.A.E.A.); (M.F.M.)
| | - Muhammad Umair
- Department of Food Science and Engineering, College of Chemistry and Engineering, Shenzhen University, Shenzhen 518060, China;
| | - Ilaria Cacciotti
- Department of Engineering, INSTM RU, University of Rome “Niccolò Cusano”, 00166 Roma, Italy;
| | - José M. Lorenzo
- Centro Tecnológico de La Carne de Galicia, Avd. Galicia N° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain;
- Facultad de Ciencias de Ourense, Área de Tecnología de los Alimentos, Universidade de Vigo, 32004 Ourense, Spain
| | - Carlos Adam Conte-Junior
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, Brazil;
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Gazlay W, Evans JJ. The impact of the complexing agent on the sensitivity of collision-induced dissociation spectra to fatty acid position for a set of XYZ-type triglycerides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9226. [PMID: 34820920 DOI: 10.1002/rcm.9226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 11/03/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
RATIONALE The development of an automated platform for the positional analysis of triglycerides (TAGs) based on electrospray ionization tandem mass spectrometry (ESI-MS/MS) continues to be pursued. This work evaluates the positional sensitivities of the collision-induced dissociation (CID) spectra of a representative set of XYZ triglycerides using sodium, lithium, and ammonium salts as complexing agents. METHODS A set of triglycerides were synthesized and analyzed via ESI-MS/MS using an ion trap mass spectrometer. Using three different complexing agents, the product ion spectra of the corresponding precursor ions for twelve XYZ TAGs were collected, where X, Y, and Z represent C16:0 , C18:1(c-9) , C18:2(cc-9,12) , and C20:4(cccc-5,8,11,14) fatty acid chains. These data were then used to prepare ternary plots for four positional isomer systems to evaluate the positional sensitivity differences among the three different complexing agents. RESULTS The positional sensitivities for each of the four positional isomer systems were robust for the sodium and lithium adducts. The CID data for the sodium and lithium TAGs demonstrated an unfavorable loss of the fatty acid in the center position and showed a higher sensitivity to fatty acid position, when compared with the CID data for ammonium adducts, especially for the arachidonic acid containing triglycerides. CONCLUSIONS The data shows that that the relative abundances of the DAG product ions for the XYZ-type TAGs when using sodium and lithium complexing agent adducts are sensitive to fatty acid position and are consistent for the diverse array of TAGs studied in this work. This suggests that using sodium or lithium as the complexing agent may be advantageous for the development of an automated platform for the positional analysis of complex TAG mixtures based on ESI-MS/MS.
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Affiliation(s)
- William Gazlay
- Chemistry Department, University of Massachusetts Boston, Boston, MA, USA
| | - Jason J Evans
- Chemistry Department, University of Massachusetts Boston, Boston, MA, USA
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Logan A, Lopez C, Xu M, Day L, Oiseth S, Augustin MA. Tempering governs the milk fat crystallisation and viscoelastic behaviour of unprocessed and homogenised creams. Food Res Int 2021; 147:110557. [PMID: 34399534 DOI: 10.1016/j.foodres.2021.110557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/07/2021] [Accepted: 06/21/2021] [Indexed: 11/25/2022]
Abstract
The crystallisation behaviour of milk fat plays an important role in the functionality and sensory properties of fat-rich dairy products. In this study, we investigated the impact of tempering to 25 °C on the viscoelastic properties, particle size and thermal behaviour of 20% w/w unprocessed and homogenised creams prepared from bovine milk. The crystallisation properties were examined by synchrotron X-ray diffraction (XRD) at small (SAXS) and wide angle (WAXS) and differential scanning calorimetry (DSC). Oscillation rheology was performed to characterise the cream's viscoelastic properties. Homogenisation (35 MPa) reduced the average droplet size from 4.4 to 1.3 µm. After 24 h storage at 4 °C, milk fat structures showed triacylglycerol (TAG) 2L and 3L(001, 002, 003, 005) lamellar stacking orders associated predominantly with the α and β' polymorphic forms. Tempering to 25 °C induced the complete melting of the 3L crystals and led to an irreversible loss in the elastic modulus (G') and a reduction in the viscous modulus (G'') once returned to refrigerated conditions, due to changes in the particle-particle interactions and structure of the reformed milk fat crystals. The results demonstrate that crystallisation behaviour of milk fat is influenced by droplet size and the rearrangement of triacylglycerol (TAG) upon tempering, and lead to changes in the viscoelastic behaviour of dairy products containing a high level of milk fat.
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Affiliation(s)
- Amy Logan
- CSIRO Agriculture and Food, 671 Sneydes Road, Werribee, Victoria 3030, Australia.
| | | | - Mi Xu
- CSIRO Agriculture and Food, 671 Sneydes Road, Werribee, Victoria 3030, Australia.
| | - Li Day
- CSIRO Agriculture and Food, 671 Sneydes Road, Werribee, Victoria 3030, Australia.
| | - Sofia Oiseth
- CSIRO Agriculture and Food, 671 Sneydes Road, Werribee, Victoria 3030, Australia.
| | - Mary Ann Augustin
- CSIRO Agriculture and Food, 671 Sneydes Road, Werribee, Victoria 3030, Australia.
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Peng KY, Salim M, Pelle J, Ramirez G, Boyd BJ. TAILOR-MS, a Python Package that Deciphers Complex Triacylglycerol Fatty Acyl Structures: Applications for Bovine Milk and Infant Formulas. Anal Chem 2021; 93:5684-5690. [PMID: 33797237 PMCID: PMC8047770 DOI: 10.1021/acs.analchem.0c04373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Liquid chromatography tandem mass spectrometry (LC/MS) and other mass spectrometric technologies have been widely applied for triacylglycerol profiling. One challenge for targeted identification of fatty acyl moieties that constitute triacylglycerol species in biological samples is the numerous combinations of 3 fatty acyl groups that can form a triacylglycerol molecule. Manual determination of triacylglycerol structures based on peak intensities and retention time can be highly inefficient and error-prone. To resolve this, we have developed TAILOR-MS, a Python (programming language) package that aims at assisting: (1) the generation of targeted LC/MS methods for triacylglycerol detection and (2) automating triacylglycerol structural determination and prediction. To assess the performance of TAILOR-MS, we conducted LC/MS triacylglycerol profiling of bovine milk and two infant formulas. Our results confirmed dissimilarities between bovine milk and infant formula triacylglycerol composition. Furthermore, we identified 247 triacylglycerol species and predicted the possible existence of another 317 in the bovine milk sample, representing one of the most comprehensive reports on the triacylglycerol composition of bovine milk thus far. Likewise, we presented here a complete infant formula triacylglycerol profile and reported >200 triacylglycerol species. TAILOR-MS dramatically shortened the time required for triacylglycerol structural identification from hours to seconds and performed decent structural predictions in the absence of some triacylglycerol constituent peaks. Taken together, TAILOR-MS is a valuable tool that can greatly save time and improve accuracy for targeted LC/MS triacylglycerol profiling.
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Affiliation(s)
- Kang-Yu Peng
- Haematology Research Group, The Heart Research Institute, University of Sydney, Newtown, NSW 2042, Australia
| | - Malinda Salim
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Joseph Pelle
- Helen Macpherson Smith Trust laboratory at Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Gisela Ramirez
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
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6
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Ali AH, Wei W, Khalifa SA, Zhang X, Wang X. Effect of pasteurisation, homogenisation and freeze‐drying on bovine and buffalo milk fat triacylglycerols profile. INT J DAIRY TECHNOL 2021. [DOI: 10.1111/1471-0307.12781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abdelmoneim H Ali
- International Joint Research Laboratory for Lipid Nutrition and Safety Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province School of Food Science and Technology Jiangnan University Wuxi 214122 China
- Department of Food Science Faculty of Agriculture Zagazig University Zagazig 44511 Egypt
| | - Wei Wei
- International Joint Research Laboratory for Lipid Nutrition and Safety Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Salah A Khalifa
- Department of Food Science Faculty of Agriculture Zagazig University Zagazig 44511 Egypt
| | - Xinghe Zhang
- International Joint Research Laboratory for Lipid Nutrition and Safety Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Xingguo Wang
- International Joint Research Laboratory for Lipid Nutrition and Safety Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province School of Food Science and Technology Jiangnan University Wuxi 214122 China
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Verma A, Meitei NS, Gajbhiye PU, Raftery MJ, Ambatipudi K. Comparative Analysis of Milk Triglycerides Profile between Jaffarabadi Buffalo and Holstein Friesian Cow. Metabolites 2020; 10:metabo10120507. [PMID: 33322613 PMCID: PMC7764747 DOI: 10.3390/metabo10120507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/25/2020] [Accepted: 12/06/2020] [Indexed: 12/03/2022] Open
Abstract
Milk lipids are known for a variety of biological functions, however; little is known about compositional variation across breeds, especially for Jaffarabadi buffalo, an indigenous Indian breed. Systematic profiling of extracted milk lipids was performed by mass spectrometry across summer and winter in Holstein Friesian cow and Jaffarabadi buffalo. Extensive MS/MS spectral analysis for the identification (ID) of probable lipid species using software followed by manual verification and grading of each assigned lipid species enabled ID based on (a) parent ion, (b) head group, and (c) partial/full acyl characteristic ions for comparative profiling of triacylglycerols between the breeds. Additionally, new triacylglycerol species with short-chain fatty acids were reported by manual interpretation of MS/MS spectra and comparison with curated repositories. Collectively, 1093 triacylglycerol species belonging to 141 unique sum compositions between the replicates of both the animal groups were identified. Relative quantitation at sum composition level followed by statistical analyses revealed changes in relative abundances of triacylglycerol species due to breed, season, and interaction effect of the two. Significant changes in triacylglycerols were observed between breeds (81%) and seasons (59%). When the interaction effect is statistically significant, a higher number of triacylglycerols species in Jaffarabadi has lesser seasonal variation than Holstein Friesian.
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Affiliation(s)
- Aparna Verma
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ningombam Sanjib Meitei
- Luhup Private Limited, Indore 452001, India
- Ningombam Angouton Memorial Trust, Imphal East, Manipur 795008, India
| | - Prakash U Gajbhiye
- Cattle Breeding Farm, Junagadh Agricultural University, Junagadh 362001, India
| | - Mark J Raftery
- Bioanalytical Mass Spectrometry Facility, University of New South Wales, Sydney 2052, Australia
| | - Kiran Ambatipudi
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, India
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8
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Palyzová A, Řezanka T. Separation and identification of diacylglycerols containing branched chain fatty acids by liquid chromatography-mass spectrometry. J Chromatogr A 2020; 1635:461708. [PMID: 33223151 DOI: 10.1016/j.chroma.2020.461708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/08/2020] [Accepted: 11/09/2020] [Indexed: 10/23/2022]
Abstract
A combination of two chromatographic and two enzymatic methods was used for the analysis of molecular species of lipids from Gram-positive bacteria of the genus Kocuria. Gram-positive bacteria contain a majority of branched fatty acids (FAs), especially iso- and/or anteiso-FAs. Two strains K. rhizophila were cultivated at three different temperatures (20, 28, and 37°C) and the majority phospholipid, i.e., the mixture of molecular species of phosphatidylglycerols (PGs) was separated by means of hydrophilic interaction liquid chromatography (HILIC). After enzymatic hydrolysis of PGs by phospholipase C and derivatization of the free OH group, the sn-1,2-diacyl-3-acetyl triacylglycerols (AcTAGs) were separated by reversed phase HPLC. Molecular species such as i-15:0/i-15:0/2:0, ai-15:0/ai-15:0/2:0, and 15:0/15:0/2:0 (straight chains) were identified by liquid chromatography-positive electrospray ionization mass spectrometry. The tandem mass spectra of both standards and natural compounds containing iso, anteiso and straight chain FAs with the same carbons were identical. Therefore, for identification of the ratio of two regioisomers, i.e. i-15:0/ai-15:0/2:0 vs. ai-15:0/i-15:0/2:0, they were cleavage by pancreatic lipase. The mixture of free fatty acids (FFAs) and 2-monoacylglycerols (2-MAGs) was obtained. After their separation by TLC and esterification and/or transesterification, the fatty acid methyl esters were quantified by GC-MS and thus the ratio of regioisomers was determined. It has been shown that the ratio of PG (containing as majority i-15: 0 / i-15: 0, i-15: 0 / ai-15: 0 and / or ai-15: 0 / i-15: 0 and ai-15: 0 / ai-15: 0 molecular species) significantly affected the membrane flow of bacterial cells cultured at different temperatures.
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Affiliation(s)
- Andrea Palyzová
- Institute of Microbiology, the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Tomáš Řezanka
- Institute of Microbiology, the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic.
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Bukowski MR, Picklo MJ. Simple, Rapid Lipidomic Analysis of Triacylglycerols in Bovine Milk by Infusion-Electrospray Mass Spectrometry. Lipids 2020; 56:243-255. [PMID: 33169389 DOI: 10.1002/lipd.12292] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/08/2020] [Accepted: 10/26/2020] [Indexed: 11/11/2022]
Abstract
Bovine milk is a complex mixture of lipids, proteins, carbohydrates, and other factors of which lipids comprise 3-5% of the total mass. Rapid analysis and characterization of the triacylglycerols (TAG) that comprise about 95% of the total lipid is daunting given the numerous TAG species. In the attached methods paper, we demonstrate an improved method for identifying and quantifying TAG species by infusion-based "shotgun" lipidomics. Because of the broad range of TAG species in milk, a single internal standard was insufficient for the analysis and required sectioning the spectrum into three portions based upon mass range to provide accurate quantitation of TAG species. Isobaric phospholipid interferences were removed using a simple dispersive solid-phase extraction step. Using this method, > 100 TAG species were quantitated by acyl carbon number and desaturation level in a sample of commercially purchased bovine milk.
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Affiliation(s)
- Michael R Bukowski
- USDA-ARS Grand Forks Human Nutrition Research Center, Grand Forks, ND, 58203, USA
| | - Matthew J Picklo
- USDA-ARS Grand Forks Human Nutrition Research Center, Grand Forks, ND, 58203, USA
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Liu Z, Li C, Pryce J, Rochfort S. Comprehensive Characterization of Bovine Milk Lipids: Triglycerides. ACS OMEGA 2020; 5:12573-12582. [PMID: 32548441 PMCID: PMC7271359 DOI: 10.1021/acsomega.0c01841] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
A comprehensive survey on triglycerides (TAGs) of bovine milk was conducted by a combination of exhaustive liquid chromatography (LC) separation, high-resolution mass spectrometry (MS) detection, and automated lipid molecular feature extraction. A total of 220 groups (a series of species having the same chemical formula and mass) and 3454 molecular species of TAGs were identified based on the accurate mass of the parent ion as well as MS2 information. Sixty-five different fatty acids (FAs) were found across these TAG species; C4:0, C6:0, C8:0, C10:0, C12:0, C14:0, C16:0, C18:0, and C18:1 were the most frequent FAs, whereas C11:3, C11:4, C27:0, C27:1, C28:0, and C28:1 were rare FAs in TAG molecules. The number of species identified represents only a small portion of total TAG molecules that can be theoretically synthesized from 65 FAs. Each TAG group contains on average 15-16 isomeric species (species with different FA composition), but positional isomers do not seem to be widespread. As the isomeric species cannot be completely resolved chromatographically, quantification of TAG was conducted at the group level. The most abundant TAG groups in bovine milk include TAG 34:0, TAG 36:0, TAG 38:1, TAG 38:0, and TAG 40:1. This study provides the most comprehensive milk TAG inventory so far that can be used as a reference for studying milk lipids.
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Affiliation(s)
- Zhiqian Liu
- Agriculture
Victoria Research, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - Cheng Li
- Agriculture
Victoria Research, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
- School
of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Jennie Pryce
- Agriculture
Victoria Research, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
- School
of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Simone Rochfort
- Agriculture
Victoria Research, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
- School
of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia
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11
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Zhu Z, Guo W. Recent developments on rapid detection of main constituents in milk: a review. Crit Rev Food Sci Nutr 2020; 61:312-324. [PMID: 32106694 DOI: 10.1080/10408398.2020.1731417] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Milk is a good source of quality fats, proteins, carbohydrates, minerals, and vitamins. Determining milk constituents is very important in dairy production and is usually conducted by means of physical or chemical processes in laboratories. These methods are time-consuming and cannot satisfy the need in practice. Developing simple, quick, cost-effective, reliable, and sensitive methods on the detection of main constituents in milk is useful for dairy farmers, manufacturers and consumers. In last decades, many rapid detection techniques such as chromatography, spectroscopy, dielectric properties, and sensors, have emerged and shown great potential in the detection of main constituents in liquid milk. In this review, the rapid detection techniques applied to determine the main constituents in milk have been reviewed. Meanwhile, the potential advantages and limitations of these techniques and recommendations for future research have also been proposed.
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Affiliation(s)
- Zhuozhuo Zhu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenchuan Guo
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, China.,Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service, Yangling, Shaanxi, China
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12
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Cossignani L, Pollini L, Blasi F. Invited review: Authentication of milk by direct and indirect analysis of triacylglycerol molecular species. J Dairy Sci 2019; 102:5871-5882. [DOI: 10.3168/jds.2019-16318] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/11/2019] [Indexed: 01/06/2023]
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13
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Analysis of triacylglycerols molecular species composition, total fatty acids, and sn-2 fatty acids positional distribution in different types of milk powders. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00182-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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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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15
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Makarov P, Zheng D, Le D, Evans JJ. The Impact of the Complexing Cation on the Sensitivity of the Collisional-Induced Dissociation Spectra to Fatty Acid Position for a Set of YXY/YYX-type Triglycerides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:1591-1598. [PMID: 29947151 DOI: 10.1002/rcm.8211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/05/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
RATIONAL The development of an automated platform for the positional analysis of triglycerides based on electrospray tandem mass spectrometry continues to be pursued. This work compares the positional sensitivities of the collisional-induced dissociation spectra for a representative set of YXY/YYX triglycerides using ammonium, silver, sodium and lithium as complexing agents. METHODS A set of triglycerides were synthesized and analyzed by electrospray tandem mass spectrometry using an ion trap mass spectrometer. Using different salt additives, the product ion spectra of the corresponding parent ions for twelve systems of the form YXY/YYX, where Y and X represent C16:0 , C18:1(c-9), C18:2(cc-9,12) and C20:4(cccc-5,8,11,14) , were collected. The data was used to prepare two-point calibration plots for each of the twelve positional isomer systems using each of the four complexing agents. RESULTS The positional sensitivities for all twelve positional isomer systems were robust for both the sodium and lithium TAG adducts. The CID data for both the sodium and lithium TAG adducts are much less sensitive to the degree of unsaturation and double bond position of the fatty acids constituents than the CID data for the ammonium adducts. CONCLUSION Using sodium or lithium TAG adducts may be advantageous for the development of an accurate predictive model for performing positional analysis of complex TAG mixtures based on electrospray tandem mass spectrometry. Ammonium adducts are likely complicated by the ability of the ammonium ion to provide extra stability to some parent ions through hydrogen bond-like interactions.
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Affiliation(s)
- Pavel Makarov
- University of Massachusetts Boston, Chemistry Dept., 100 Morrissey Blvd, Boston, Massachusetts, United States
| | - Dong Zheng
- University of Wisconsin Milwaukee, Department of Mechanical Engineering, College of Engineering and Applied Science, Milwaukee, Wisconsin, United States
| | - Duc Le
- University of Massachusetts Boston, Chemistry Dept., 100 Morrissey Blvd, Boston, Massachusetts, United States
| | - Jason J Evans
- Chemistry Department, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA, 02125
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Lipids in the Stomach – Implications for the Evaluation of Food Effects on Oral Drug Absorption. Pharm Res 2018; 35:55. [DOI: 10.1007/s11095-017-2289-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
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17
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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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Oras E, Vahur S, Isaksson S, Kaljurand I, Leito I. MALDI-FT-ICR-MS for archaeological lipid residue analysis. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:689-700. [PMID: 28741297 DOI: 10.1002/jms.3974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/30/2017] [Accepted: 07/19/2017] [Indexed: 06/07/2023]
Abstract
Soft-ionization methods are currently at the forefront of developing novel methods for analysing degraded archaeological organic residues. Here, we present little-used soft ionization method of matrix assisted laser desorption/ionization-Fourier transform-ion cyclotron resonance-mass spectrometry (MALDI-FT-ICR-MS) for the identification of archaeological lipid residues. It is a high-resolution and sensitive method with low limits of detection capable of identifying lipid compounds in small concentrations, thus providing a highly potential new technique for the analysis of degraded lipid components. A thorough methodology development for analysing cooked and degraded food remains from ceramic vessels was carried out, and the most efficient sample preparation protocol is described. The identified components, also controlled by independent parallel analysis by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS), demonstrate its capability of identifying very different food residues including dairy, adipose fats as well as lipids of aquatic origin. The results obtained from experimentally cooked and original archaeological samples prove the suitability of MALDI-FT-ICR-MS for analysing archaeological organic residues. Sample preparation protocol and identification of compounds provide future reference for analysing various aged and degraded lipid residues in different organic and mineral matrices.
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Affiliation(s)
- Ester Oras
- Institute of History and Archaeology, Faculty of Arts and Humanities, University of Tartu, Jakobi 2, 51014, Tartu, Estonia
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, 50411, Tartu, Estonia
| | - Signe Vahur
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, 50411, Tartu, Estonia
| | - Sven Isaksson
- The Archaeological Research Laboratory, Department of Archaeology and Classical Studies, SE-106 91, Stockholm, Sweden
| | - Ivari Kaljurand
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, 50411, Tartu, Estonia
| | - Ivo Leito
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, 50411, Tartu, Estonia
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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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20
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Liu Z, Wang J, Cocks BG, Rochfort S. Seasonal Variation of Triacylglycerol Profile of Bovine Milk. Metabolites 2017; 7:metabo7020024. [PMID: 28574443 PMCID: PMC5487995 DOI: 10.3390/metabo7020024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/26/2017] [Accepted: 05/30/2017] [Indexed: 01/27/2023] Open
Abstract
Milk contains 3–6% of fat, of which the dominant component is triacylglycerol (TAG). Over 100 TAG groups can be readily detected in any non-enriched milk sample by LC-MS; most TAG groups contain several isomers (TAG molecules with different fatty acid composition), which cannot be fully resolved chromatographically by any single stationary phase. TAG profile of mature milk from 19 cows was surveyed in this study for eight consecutive months using RP-LC-Orbitrap MS. It was found that TAG profile of milk was not constant throughout the milking season and the seasonal pattern varied with TAG groups. The overall unsaturation level of TAG was stable from October 2013 to January 2014, decreased in February/March 2014 and then increased from April and peaked in May 2014. In addition to the seasonal fluctuation in TAG profile, the proportion of different isomeric species within a TAG group also changed substantially across seasons. However, the proportion of different positional isomers within a given TAG group does not seem to vary during the milking season. To our knowledge, this is the first report on the seasonal change of milk lipid at the TAG group and isomer level.
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Affiliation(s)
- Zhiqian Liu
- Biosciences Research, Agriculture Victoria, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia.
| | - Jianghui Wang
- Biosciences Research, Agriculture Victoria, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia.
| | - Benjamin G Cocks
- Biosciences Research, Agriculture Victoria, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia.
- School of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia.
| | - Simone Rochfort
- Biosciences Research, Agriculture Victoria, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia.
- School of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia.
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Li Q, Zhao Y, Zhu D, Pang X, Liu Y, Frew R, Chen G. Lipidomics profiling of goat milk, soymilk and bovine milk by UPLC-Q-Exactive Orbitrap Mass Spectrometry. Food Chem 2017; 224:302-309. [DOI: 10.1016/j.foodchem.2016.12.083] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 11/23/2016] [Accepted: 12/22/2016] [Indexed: 12/21/2022]
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Liu Z, Rochfort S, Cocks BG. Optimization of a single phase method for lipid extraction from milk. J Chromatogr A 2016; 1458:145-9. [DOI: 10.1016/j.chroma.2016.06.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/19/2016] [Accepted: 06/16/2016] [Indexed: 11/17/2022]
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23
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Liu Z, Cocks BG, Rochfort S. Comparison of Molecular Species Distribution of DHA-Containing Triacylglycerols in Milk and Different Infant Formulas by Liquid Chromatography-Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2134-2144. [PMID: 26902881 DOI: 10.1021/acs.jafc.5b05920] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Long-chain polyunsaturated fatty acids (LC-PUFA) are an important nutritional lipid and have potential in being able to promote human health. Docosahexaenoic acid (DHA, C22:6ω3) is often added in infant formulas to meet the nutritional requirement of formula-fed infants. A comprehensive survey on DHA-containing triacylglycerol (DHA-TAG) molecular species has been conducted for seven infant formulas (IFs) sourced from Australia, Europe, and the USA as well as bovine milk and human milk. Using LC-triple quadrupole MS and LC-LTQ-orbitrap MS we were able to identify and quantify 56 DHA-TAG species in these samples; the fatty acid structure of these species was assigned using their MS(2) spectra. The species composition of DHA-TAG was found to be different between bovine milk, human milk, and IFs and also between different brands of IFs. Bovine milk and human milk contain DHA-TAG of smaller molecular size (728-952 Da), whereas five out of the seven IF samples contain species of broader mass range (from 728 to 1035 Da). Our study indicates that two types of DHA were used in the seven IF products surveyed and that there is very large difference in molecular species distribution in different IF products that may influence the fine nutritional profile and biological functions of IF products.
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Affiliation(s)
- Zhiqian Liu
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - Benjamin G Cocks
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
| | - Simone Rochfort
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
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Liu Z, Moate P, Ezerniks V, Cocks BG, Rochfort S. Identification and quantification of triacylglycerols containing n-3 long-chain polyunsaturated fatty acids in bovine milk. J Dairy Sci 2015; 98:8473-85. [DOI: 10.3168/jds.2015-9889] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/09/2015] [Indexed: 12/12/2022]
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25
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An integrated multianalytical approach to the reconstruction of daily activities at the Bronze Age settlement in Peñalosa (Jaén, Spain). Microchem J 2015. [DOI: 10.1016/j.microc.2015.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Analysis of regioisomers of polyunsaturated triacylglycerols in marine matrices by HPLC/HRMS. Food Chem 2015; 166:551-560. [DOI: 10.1016/j.foodchem.2014.06.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 06/04/2014] [Accepted: 06/15/2014] [Indexed: 11/19/2022]
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27
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Beccaria M, Sullini G, Cacciola F, Donato P, Dugo P, Mondello L. High performance characterization of triacylglycerols in milk and milk-related samples by liquid chromatography and mass spectrometry. J Chromatogr A 2014; 1360:172-87. [DOI: 10.1016/j.chroma.2014.07.073] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 06/26/2014] [Accepted: 07/23/2014] [Indexed: 11/24/2022]
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28
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Hrbek V, Vaclavik L, Elich O, Hajslova J. Authentication of milk and milk-based foods by direct analysis in real time ionization–high resolution mass spectrometry (DART–HRMS) technique: A critical assessment. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.08.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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29
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Zhou Q, Gao B, Zhang X, Xu Y, Shi H, Yu L(L. Chemical profiling of triacylglycerols and diacylglycerols in cow milk fat by ultra-performance convergence chromatography combined with a quadrupole time-of-flight mass spectrometry. Food Chem 2014; 143:199-204. [DOI: 10.1016/j.foodchem.2013.07.114] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/02/2013] [Accepted: 07/20/2013] [Indexed: 11/26/2022]
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Ruiz-Samblás C, González-Casado A, Cuadros-Rodríguez L. Triacylglycerols Determination by High-temperature Gas Chromatography in the Analysis of Vegetable Oils and Foods: A Review of the Past 10 Years. Crit Rev Food Sci Nutr 2013; 55:1618-31. [DOI: 10.1080/10408398.2012.713045] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Tranchida PQ, Salivo S, Bonaccorsi I, Rotondo A, Dugo P, Mondello L. Analysis of the unsaponifiable fraction of lipids belonging to various milk-types by using comprehensive two-dimensional gas chromatography with dual mass spectrometry/flame ionization detection and with the support of high resolution time-of-flight mass spectrometry for structural elucidation. J Chromatogr A 2013; 1313:194-201. [DOI: 10.1016/j.chroma.2013.07.089] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/19/2013] [Accepted: 07/23/2013] [Indexed: 10/26/2022]
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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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33
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On-line two dimensional liquid chromatography/mass spectrometry for the analysis of triacylglycerides in peanut oil and mouse tissue. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 895-896:48-55. [DOI: 10.1016/j.jchromb.2012.03.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 03/08/2012] [Accepted: 03/08/2012] [Indexed: 11/13/2022]
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34
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A comparative study of the composition of triacylglycerol molecular species in equine and human milks. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s13594-011-0042-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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35
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Chiofalo B, Dugo P, Bonaccorsi IL, Mondello L. Comparison of major lipid components in human and donkey milk: new perspectives for a hypoallergenic diet in humans. Immunopharmacol Immunotoxicol 2011; 33:633-44. [DOI: 10.3109/08923973.2011.555409] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Regert M. Analytical strategies for discriminating archeological fatty substances from animal origin. MASS SPECTROMETRY REVIEWS 2011; 30:177-220. [PMID: 21337597 DOI: 10.1002/mas.20271] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 07/21/2009] [Accepted: 07/21/2009] [Indexed: 05/21/2023]
Abstract
Mass spectrometry (MS) is an essential tool in the field of biomolecular archeology to characterize amorphous organic residues preserved in ancient ceramic vessels. Animal fats of various nature and origin, namely subcutaneous fats of cattle, sheep, goats, pigs, horses, and also of dairy products, are those most commonly identified in organic residues in archeological pottery. Fats and oils of marine origin have also been revealed. Since the first applications of MS coupled with gas chromatography (GC) in archeology at the end of 1980s, several developments have occurred, including isotopic determinations by GC coupled to isotope ratio MS and identification of triacylglycerols (TAGs) structure by soft ionization techniques (ESI and APCI). The combination of these methods provides invaluable insights into the strategies of exploitation of animal products in prehistory. In this review, I focus on the analytical strategies based upon MS that allow elucidation of the structure of biomolecular constituents and determination of their isotopic values to identify the nature of animal fat components preserved in highly complex and degraded archeological matrices.
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Affiliation(s)
- M Regert
- Centre d'Etudes Préhistoire, Antiquité, Moyen Âge, UMR 6130, Université Nice Sophia Antipolis, CNRS, Bât. 1; 250, rue Albert Einstein, F-06560 Valbonne, France.
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37
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Haddad I, Mozzon M, Strabbioli R, Frega NG. Electrospray ionization tandem mass spectrometry analysis of triacylglycerols molecular species in camel milk (Camelus dromedarius). Int Dairy J 2011. [DOI: 10.1016/j.idairyj.2010.09.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Gastaldi D, Medana C, Giancotti V, Aigotti R, Dal Bello F, Baiocchi C. HPLC-APCI analysis of triacylglycerols in milk fat from different sources. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.201000068] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Schreiberová O, Krulikovská T, Sigler K, Čejková A, Řezanka T. RP-HPLC/MS-APCI Analysis of Branched Chain TAG Prepared by Precursor-Directed Biosynthesis with Rhodococcus erythropolis. Lipids 2010; 45:743-56. [DOI: 10.1007/s11745-010-3447-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Accepted: 06/29/2010] [Indexed: 10/19/2022]
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40
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Guarino C, Fuselli F, La Mantia A, Longo L, Faberi A, Marianella RM. Peptidomic approach, based on liquid chromatography/electrospray ionization tandem mass spectrometry, for detecting sheep's milk in goat's and cow's cheeses. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2010; 24:705-713. [PMID: 20169561 DOI: 10.1002/rcm.4426] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A common fraud in the dairy field is the addition of sheep's milk to goat's cheeses, because it has a very similar taste to goat's milk, but is more available, and is commonly considered to have a better capacity to curdle. For similar reasons, and due to economic convenience, sheep's cheeses may also contain fraudulent cow's milk. In order to detect this fraud, an EU official method may be used, but it is only a qualitative method (presence/absence of cow's milk). A method able to quantify the presence of sheep's milk during cheese production in goat's and cow's cheeses was developed. The method is based on liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) analysis of peptides of a casein extract from the cheese. By a simple procedure, caseins are extracted from cheeses, solubilized, digested with plasmin, and subsequently analyzed by LC/ESI-MS/MS. A typical sheep's peptide produced by plasmin hydrolysis (m/z = 860) was accurately selected and analyzed to understand if, and by how much, a declared pure goat's cheese contains sheep's milk. By analyzing the same peptide it is also possible to detect if, and by how much, a declared pure sheep's milk contains, or not, cow's milk. The method was applied to several goat's and cow's cheese samples. Quantitation was performed with a calibration curve obtained by analyzing curd cheeses containing different percentages of sheep's milk. The method detection limit and method quantitation limit were evaluated. This method appears accurate and suitable for detecting up to 2% of sheep's milk in cheeses.
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Affiliation(s)
- Chiara Guarino
- Ministero delle Politiche Agricole Alimentari e Forestali, Dipartimento dell'Ispettorato Centrale della Tutela della Qualità e della Repressione Frodi dei Prodotti Agroalimentari, Laboratorio centrale di Roma, Via del Fornetto 85, 00149 Rome, Italy
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Mikuma T, Kaneko T. Forensic Discrimination of Vegetable Oils Using Direct Detection of Acylglycerols by Liquid Chromatography/Mass Spectrometry. BUNSEKI KAGAKU 2010. [DOI: 10.2116/bunsekikagaku.59.399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ikeda K, Oike Y, Shimizu T, Taguchi R. Global analysis of triacylglycerols including oxidized molecular species by reverse-phase high resolution LC/ESI-QTOF MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:2639-47. [PMID: 19481987 DOI: 10.1016/j.jchromb.2009.03.047] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 03/26/2009] [Accepted: 03/31/2009] [Indexed: 12/21/2022]
Abstract
Recently, global analysis of triacylglycerols (TAGs) has become increasingly important in studies of abnormality of lipid metabolism in metabolic syndrome. TAGs consist of various molecular species, caused by their three fatty acyl chains with a large variety of carbon chain lengths and degrees of unsaturation. Therefore, most previously reported methods have been insufficient in global detection of TAGs including their structural isomers and TAGs with oxidized or odd number acyl carbon chain. Here we report an effective method for global analysis of TAG molecular species from complex lipid mixtures of mouse liver and white adipose tissue (WAT) using reverse-phased high resolution liquid chromatography (LC) coupled with electrospray ionization (ESI)-quadrapole/time of flight hybrid mass spectrometer (QTOF-MS). For effective profiling of TAG molecular species, sensitive two-dimensional (2D) maps were constructed and individual structures were correctly identified by the elution profile and MS/MS. As a result, TAGs including their structural isomers and TAGs with an odd number acyl carbon chain were separated and detected effectively on the 2D map as compared with conventional high performance LC. It was also found that our 2D profiling method was useful in searching characteristic molecular species globally. In mouse WAT, novel oxidized TAGs, which were mainly formed by hydroperoxidation of one of their linoleic acyl chains, were effectively detected in comparison with TAG molecular species of mouse liver.
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Affiliation(s)
- Kazutaka Ikeda
- Department of Metabolome, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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43
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Determination of Triacylglycerols in Butterfat by Normal-Phase HPLC and Electrospray–Tandem Mass Spectrometry. Lipids 2008; 44:169-95. [DOI: 10.1007/s11745-008-3247-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Accepted: 09/11/2008] [Indexed: 10/21/2022]
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44
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Blasi F, Montesano D, De Angelis M, Maurizi A, Ventura F, Cossignani L, Simonetti M, Damiani P. Results of stereospecific analysis of triacylglycerol fraction from donkey, cow, ewe, goat and buffalo milk. J Food Compost Anal 2008. [DOI: 10.1016/j.jfca.2007.06.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Mirabaud S, Rolando C, Regert M. Molecular criteria for discriminating adipose fat and milk from different species by NanoESI MS and MS/MS of their triacylglycerols: application to archaeological remains. Anal Chem 2007; 79:6182-92. [PMID: 17637040 DOI: 10.1021/ac070594p] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new multistep analytical methodology is described in this paper for the precise identification of triacylglycerols, which are biomarkers of dairy products and subcutaneous fats, that may be chemically identified in archaeological pottery. It consists of the analysis of the total lipid extract from different kinds of fats by high-temperature gas chromatography, performed in order to select the ceramic vessels in which animal fats are well preserved, followed by nanoelectrospray QqTOF mass spectrometry that allows for distinguishing the specific origins of the lipids detected (namely, cow, sheep, or goat). The analysis of model samples, cow and goat dairy products and cow and sheep adipose fats, was successfully achieved. The fatty acid composition of each triacylglycerol was identified, which allowed for the discrimination of subcutaneous fats and dairy fats and distinguishing between cow and goat milk. This methodology was then applied to archaeological samples, and the presence of goat milk, cow milk, and possibly sheep subcutaneous fat was assessed based on the discriminating criteria found on modern fats.
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Affiliation(s)
- Sigrid Mirabaud
- Equipe Physico-Chimie pour l'Analyse et la Biologie, Chimie Organique et Macromoléculaire UMR CNRS 8009, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France
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46
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Picariello G, Sacchi R, Addeo F. One-step characterization of triacylglycerols from animal fat by MALDI-TOF MS. EUR J LIPID SCI TECH 2007. [DOI: 10.1002/ejlt.200600255] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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47
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Craven RJ, Lencki RW. Rapid analysis of acylglycerols in low molecular weight milk fat fractions. Lipids 2007; 42:473-82. [PMID: 17404768 DOI: 10.1007/s11745-007-3044-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2006] [Accepted: 02/21/2007] [Indexed: 11/26/2022]
Abstract
A suitable analytical method was required to facilitate development of an industrial-scale short-path distillation (SPD) process. Short-path distillation produces milk fat distillates (MFD) enriched in low molecular weight milk fat components-viz. free fatty acids, monoacylglycerols, diacylglycerols, cholesterol and low molecular weight triacylglycerols. In this case, solid-phase extraction (SPE) was considered a better alternative than thin-layer chromatography for separating polar and apolar lipid components in MFD samples due to its speed and near-complete recoveries. Solid-phase extraction of MFDs yielded two fractions, both of which are sufficiently pure for subsequent analysis by gas chromatography. This procedure provided rapid and complete chemical characterization (including mass balances) of low-molecular weight milk-fat fractions.
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Affiliation(s)
- R J Craven
- Department of Food Science, University of Guelph, N1G 2W1, Guelph, ON, Canada
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48
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Kemppinen A, Kalo P. Quantification of triacylglycerols in butterfat by gas chromatography-electron impact mass spectrometry using molar correction factors for [M-RCOO]+ ions. J Chromatogr A 2006; 1134:260-83. [PMID: 16996071 DOI: 10.1016/j.chroma.2006.08.089] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2006] [Revised: 08/28/2006] [Accepted: 08/30/2006] [Indexed: 11/27/2022]
Abstract
A quantitative electron impact GC-MS method using molar correction factors (MCFs) for [M-RCOO]+ ions has been developed for determination of molecular species of triacylglycerols (TAGs). MCFs were determined by linear calibration for 226 ions of 104 TAG species with good reproducibility: on the average, coefficient of determination was 0.975 +/- 0.043 and 0.963 +/- 0.115 for saturated and unsaturated TAGs, respectively. The MCFs of the sn-1(3) regioisomers of short-chain TAGs were lower than those of sn-2 isomers indicating ca. 2-3-fold higher cleavage of butyroyl and caproyl groups from the primary positions than from the secondary position. The method enabled quantification of 139 and 135 individual TAG species of butterfat (BF) and interesterified butterfat, respectively, including several regioisomers of short-chain TAGs. The most abundant molecular species of the even-numbered TAGs in BF were butyroylpalmitoyloleoylglycerol (5.05 mol%), butyroyldipalmitoylglycerol (4.75 mol%), and palmitoyldioleoylglycerol (3.32 mol%). The method provides an alternative for elucidation of nutritional and technological properties of relatively saturated TAG mixtures.
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Affiliation(s)
- Asmo Kemppinen
- Department of Food Technology, FI-00014 University of Helsinki, Helsinki, Finland.
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Dugo P, Kumm T, Chiofalo B, Cotroneo A, Mondello L. Separation of triacylglycerols in a complex lipidic matrix by using comprehensive two-dimensional liquid chromatography coupled with atmospheric pressure chemical ionization mass spectrometric detection. J Sep Sci 2006; 29:1146-54. [PMID: 16830730 DOI: 10.1002/jssc.200500476] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present investigation describes the employment of a comprehensive 2-D HPLC system, based on the combination of a silver ion and an RP column, for the characterization of the triacylglycerol (TAG) fraction of a very complex lipidic sample: donkey milk fat. The TAGs were grouped on the resulting bidimensional contour plot according to their double bond numbers (aligned along vertical bands) and according to their partition numbers (aligned along horizontal bands). Peak assignment was supported by using atmospheric pressure chemical ionization mass spectrometric (APCI-MS) detection. The combination of the enhanced resolving power of comprehensive multidimensional LC, the formation of ordered 2-D patterns, and APCI-MS detection proved to be an effective tool for the characterization of the complex matrix, enabling the separation and identification of nearly 60 TAGs.
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Affiliation(s)
- Paola Dugo
- Dipartimento di Chimica Organica e Biologica, Facoltà di Scienze, Università di Messina, Italy
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50
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Ohashi Y, Dogru M, Tsubota K. Laboratory findings in tear fluid analysis. Clin Chim Acta 2006; 369:17-28. [PMID: 16516878 DOI: 10.1016/j.cca.2005.12.035] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Revised: 12/29/2005] [Accepted: 12/30/2005] [Indexed: 11/24/2022]
Abstract
The tear film, composed of the lipid, aqueous and mucin layers, has many functions including defending the ocular surface. The tear film covering the ocular surface presents a mechanical and antimicrobial barrier and ensures an optical refractive surface. The lipid component originates from the meibomian glands of the tarsus and forms the superficial layer of the tear film. The aqueous component contains electrolytes, water, and a large variety of proteins, peptides and glycoproteins, and is primarily secreted by the lacrimal gland. Mucins are glycoproteins expressed by epithelial tissues of mucous surfaces. They protect tissues by functioning as antioxidants, providing lubrication, and inhibiting bacterial adherence. Quantitatively and qualitatively, its composition must be maintained within the fairly narrow limits to maintain a healthy and functional visual system. Abnormalities of the tear film, affecting the constituents or the volume, can rapidly result in serious dysfunction of the eyelids and conjunctiva and ultimately affect the transparency of the cornea. Many ocular surface tests have been developed for the clinical diagnosis of dry eye syndromes. This paper provides an overview on laboratory methods for the analysis of the tear film. Understanding the components of the tear film will aid in the treatment of dry eye syndromes and the ocular surface diseases.
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Affiliation(s)
- Yoshiki Ohashi
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku Tokyo 160-8582, Japan
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