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Kildahl-Andersen G, Gjerlaug-Enger E, Rise F, Haug A, Egelandsdal B. Quantification of Fatty Acids and their Regioisomeric Distribution in Triacylglycerols from Porcine and Bovine Sources Using 13 C NMR Spectroscopy. Lipids 2020; 56:111-122. [PMID: 32875567 DOI: 10.1002/lipd.12277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 07/02/2020] [Accepted: 07/31/2020] [Indexed: 11/10/2022]
Abstract
The uptake of specific fatty acids in humans is dependent on their position on the glycerol backbone. There is a great interest in methods that can access this information fast and accurately. By way of high-resolution NMR, we have analyzed TAG extracted from pig and beef tissues and obtained quantitative data for the composition and regioisomeric distribution of all major unsaturated fatty acids usually found in these source materials, using a combination of manual integration and deconvolution of 13 C NMR spectra. In addition, we have developed a method for determining composition and regioisomeric distribution of the two main saturated fatty acids found in pork (16:0, 18:0). The results are discussed in relation to species-specific genetic characteristics of fatty acid and TAG biosynthesis. The developed method could support decisions related to breeding for desired fatty acid profiles, and stimulate further methodology developments using high field NMR.
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Affiliation(s)
- Geir Kildahl-Andersen
- Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315, Oslo, Norway.,Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, 1432, Ås, Norway
| | | | - Frode Rise
- Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315, Oslo, Norway
| | - Anna Haug
- Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, 1432, Ås, Norway
| | - Bjørg Egelandsdal
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, 1432, Ås, Norway
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2
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Iglesias MJ, Soengas R, Probert I, Guilloud E, Gourvil P, Mehiri M, López Y, Cepas V, Gutiérrez-Del-Río I, Redondo-Blanco S, Villar CJ, Lombó F, Soto S, Ortiz FL. NMR characterization and evaluation of antibacterial and antiobiofilm activity of organic extracts from stationary phase batch cultures of five marine microalgae (Dunaliella sp., D. salina, Chaetoceros calcitrans, C. gracilis and Tisochrysis lutea). PHYTOCHEMISTRY 2019; 164:192-205. [PMID: 31174083 DOI: 10.1016/j.phytochem.2019.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/11/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
The chemical composition of five marine microalgae (Dunaliella sp., Dunaliella salina, Chaetoceros calcitrans, Chaetoceros gracilis and Tisochrysis lutea) was investigated through nuclear magnetic resonance (NMR) spectroscopic study of the soluble material obtained by sequential extraction with hexane, ethyl acetate (AcOEt) and methanol of biomass from stationary phase cultures. Hexane extracted the major lipids present in the microalgae during the stationary phase of growth, which correspond to storage lipids. Triacylglycerols (TGs) were the only storage lipids produced by Dunaliella and Chaetoceros. In contrast, T. lutea predominantly stored polyunsaturated long-chain alkenones, with sterols also detected as minor components of the hexane extract. The molecular structure of brassicasterol was determined in T. lutea and the presence of squalene in this sample was also unequivocally detected. Monogalactosyldiacylglycerols (MGDGs) and pigments were concentrated in the AcOEt extracts. C. calcitrans and D. salina constituted an exception due to the high amount of TGs and glycerol produced, respectively, by these two strains. Chlorophylls a and b and β-carotene were the major pigments synthesized by Dunaliella and chlorophyll a and fucoxanthin were the only pigments detected in Chaetoceros and T. lutea. Information concerning the acyl chains present in TGs and MGDGs as well as the positional distribution of acyl chains on the glycerol moiety was obtained by NMR analysis of hexane and AcOEt extracts, with results consistent with those expected for the genera studied. Fatty acid composition of TGs in the two Dunaliella strains was different, with polyunsaturated acyl chains almost absent in the storage lipids produced by D. salina. Except in C. calcitrans, the polar nature of soluble compounds was inferred through the relative extraction yield using methanol as the extraction solvent. Glycerol was the major component of this fraction for the Dunaliella strains. In T. lutea 1,4/2,5-cyclohexanetetrol (CHT) and dimethylsulfoniopropionate (DMSP) preponderated. CHT was also the major polyol present in the Chaetoceros strains in which DMSP was not detected, but prominent signals of 2,3-dihydroxypropane-1-sulfonate (DHSP) were observed in the 1H NMR spectra of methanolic extracts. The presence of DHSP confirms the production of this metabolite by diatoms. In addition, several other minor compounds (digalactosyldiacyglycerols (DGDGs), sulphoquinovosyldiacylglycerols (SQDGs), amino acids, carbohydrates, scyllo-inositol, mannitol, lactic acid and homarine) were also identified in the methanolic extracts. The antibacterial and antibiofilm activities of the extracts were tested. The AcOEt extract from C. gracilis showed a moderate antibiofilm activity.
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Affiliation(s)
- Ma José Iglesias
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain.
| | - Raquel Soengas
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain
| | - Ian Probert
- Roscoff Culture Collection, FR2424 Station Biologique de Roscoff (Sorbonne Université / CNRS), 29680, Roscoff, France
| | - Emilie Guilloud
- Roscoff Culture Collection, FR2424 Station Biologique de Roscoff (Sorbonne Université / CNRS), 29680, Roscoff, France
| | - Priscillia Gourvil
- Roscoff Culture Collection, FR2424 Station Biologique de Roscoff (Sorbonne Université / CNRS), 29680, Roscoff, France
| | - Mohamed Mehiri
- Institut de Chimie de Nice, UMR CNRS 7272, Université Nice Sofia Antopolis, 06103, Nice, France
| | - Yuly López
- Barcelona Institute for Global Health (ISGlobal)-Hospital Clinic-Universitat de Barcelona, Carrer Rosselló 132, 08036, Barcelona, Spain
| | - Virginio Cepas
- Barcelona Institute for Global Health (ISGlobal)-Hospital Clinic-Universitat de Barcelona, Carrer Rosselló 132, 08036, Barcelona, Spain
| | - Ignacio Gutiérrez-Del-Río
- Research Group BIONUC, Departamento de Biología Funcional, Área de Microbiología, University of Oviedo, Oviedo, Principality of Asturias, Spain. IUOPA (Instituto Universitario de Oncología del Principado de Asturias), ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), Spain
| | - Saúl Redondo-Blanco
- Research Group BIONUC, Departamento de Biología Funcional, Área de Microbiología, University of Oviedo, Oviedo, Principality of Asturias, Spain. IUOPA (Instituto Universitario de Oncología del Principado de Asturias), ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), Spain
| | - Claudio J Villar
- Research Group BIONUC, Departamento de Biología Funcional, Área de Microbiología, University of Oviedo, Oviedo, Principality of Asturias, Spain. IUOPA (Instituto Universitario de Oncología del Principado de Asturias), ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), Spain
| | - Felipe Lombó
- Research Group BIONUC, Departamento de Biología Funcional, Área de Microbiología, University of Oviedo, Oviedo, Principality of Asturias, Spain. IUOPA (Instituto Universitario de Oncología del Principado de Asturias), ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), Spain
| | - Sara Soto
- Barcelona Institute for Global Health (ISGlobal)-Hospital Clinic-Universitat de Barcelona, Carrer Rosselló 132, 08036, Barcelona, Spain
| | - Fernando López Ortiz
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain.
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3
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Avato P, Rosito I, Papadia P, Fanizzi FP. Characterization of Seed Oil Components from Nephelium Lappaceum L. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0600100910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The chemical composition of the oil extracted from the seeds of Nephelium lappaceum L., commonly known as rambutan, has been investigated. The oil from this plant, similar to other members of the Sapindaceae, typically contained triglycerides (83%) and cyanolipids (17%). The latter consisted of type III cyanolipids, 1-cyano-2-hydroxymethylprop-1-en-3-ol diesters. Structural investigation of the oil components was carried out using chemical, chromatographic and spectroscopic methods. Oleic and arachidic acids were the two dominant esterified fatty acyl chains in both triglycerides and cyanolipids. Eicosenoic acids (cis-vaccenic and paullinic acid) were present in higher amounts in the cyanolipid fraction of the oil.
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Affiliation(s)
- Pinarosa Avato
- Dipartimento Farmaco-Chimico, Universitá di Bari, via Orabona 4, 70125 Bari, Italy
| | - Isabella Rosito
- Dipartimento Farmaco-Chimico, Universitá di Bari, via Orabona 4, 70125 Bari, Italy
| | - Paride Papadia
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università, Via Monteroni, I-73100 Lecce, Italy
| | - Francesco P. Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università, Via Monteroni, I-73100 Lecce, Italy
- Consortium C.A.R.S.O, I-70010 Valenzano, Bari, Italy
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4
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Regulation of starch, lipids and amino acids upon nitrogen sensing in Chlamydomonas reinhardtii. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Moorhoff C, Li Y, Cook WD, Braybrook C, Chen QZ. Characterization of the prepolymer and gel of biocompatible poly(xylitol sebacate) in comparison with poly(glycerol sebacate) using a combination of mass spectrometry and nuclear magnetic resonance. POLYM INT 2014. [DOI: 10.1002/pi.4831] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cornelis Moorhoff
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Yuan Li
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Wayne D Cook
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Carl Braybrook
- Materials Science and Engineering; Manufacturing Flagship, CSIRO; Clayton 3169 Australia
| | - Qi-Zhi Chen
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
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6
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Li Y, Cook WD, Moorhoff C, Huang WC, Chen QZ. Synthesis, characterization and properties of biocompatible poly(glycerol sebacate) pre-polymer and gel. POLYM INT 2012. [DOI: 10.1002/pi.4419] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Wayne D Cook
- Department of Materials Engineering; Monash University; Clayton Victoria 3800 Australia
| | - Cornelis Moorhoff
- Department of Materials Engineering; Monash University; Clayton Victoria 3800 Australia
| | - Wen-Chao Huang
- Department of Materials Engineering; Monash University; Clayton Victoria 3800 Australia
| | - Qi-Zhi Chen
- Department of Materials Engineering; Monash University; Clayton Victoria 3800 Australia
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7
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Kim SS, Hyun CG, Choi YH, Lee NH. Tyrosinase inhibitory activities of the compounds isolated from Neolitsea aciculata (Blume) Koidz. J Enzyme Inhib Med Chem 2012; 28:685-9. [DOI: 10.3109/14756366.2012.670806] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sang Suk Kim
- Department of Chemistry and Center for Cosmetic Sciences, Jeju National University,
Jeju, Korea
| | | | - Young Hun Choi
- Citrus Research Station, National Institute of Horticultural & Herbal Science, RDA, Jeju, Korea
| | - Nam Ho Lee
- Department of Chemistry and Center for Cosmetic Sciences, Jeju National University,
Jeju, Korea
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8
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Pérez EMS, Iglesias MJ, Ortiz FL, Pérez IS, Galera MM. Study of the suitability of HRMAS NMR for metabolic profiling of tomatoes: Application to tissue differentiation and fruit ripening. Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.03.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Comparison among different gilthead sea bream (Sparus aurata) farming systems: activity of intestinal and hepatic enzymes and 13C-NMR analysis of lipids. Nutrients 2009; 1:291-301. [PMID: 22253985 PMCID: PMC3257603 DOI: 10.3390/nu1020291] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Accepted: 12/15/2009] [Indexed: 12/02/2022] Open
Abstract
In order to evaluate differences in general health and nutritional values of gilthead sea bream (Sparus aurata), the effects of semi-intensive, land-based tanks and sea-cages intensive rearing systems were investigated, and results compared with captured wild fish. The physiological state was determined by measuring the activity of three different intestinal digestive enzymes: alkaline phosphatase (ALP), leucine aminopeptidase (LAP) and maltase; and the activity of the hepatic ALP. Also, the hepatic content in protein, cholesterol, and lipid were assessed. 13C-NMR analysis for qualitative and quantitative characterization of the lipid fraction extracted from fish muscles for semi-intensive and land based tanks intensive systems was performed. The lipid fraction composition showed small but significant differences in the monounsaturated/saturated fatty acid ratio, with the semi-intensive characterized by higher monounsaturated and lower saturated fatty acid content with respect to land based tanks intensive rearing system.
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10
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Khallouki F, Mannina L, Viel S, Owen RW. Thermal stability and long-chain fatty acid positional distribution on glycerol of argan oil. Food Chem 2008; 110:57-61. [DOI: 10.1016/j.foodchem.2008.01.055] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Revised: 01/09/2008] [Accepted: 01/29/2008] [Indexed: 11/26/2022]
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11
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Lumor SE, Jones KC, Ashby R, Strahan GD, Kim BH, Lee GC, Shaw JF, Kays SE, Chang SW, Foglia TA, Akoh CC. Synthesis and characterization of canola oil-stearic acid-based trans-free structured lipids for possible margarine application. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:10692-10702. [PMID: 18052237 DOI: 10.1021/jf0710175] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Incorporation of stearic acid into canola oil to produce trans-free structured lipid (SL) as a healthy alternative to partially hydrogenated fats for margarine formulation was investigated. Response surface methodology was used to study the effects of lipozyme RM IM from Rhizomucor miehei and Candida rugosa lipase isoform 1 (LIP1) and two acyl donors, stearic acid and ethyl stearate, on the incorporation. Lipozyme RM IM and ethyl stearate gave the best result. Gram quantities of SLs were synthesized using lipozyme RM IM, and the products were compared to SL made by chemical catalysis and fat from commercial margarines. After short-path distillation, the products were characterized by GC and RPHPLC-MS to obtain fatty acid and triacylglycerol profiles, 13C NMR spectrometry for regiospecific analysis, X-ray diffraction for crystal forms, and DSC for melting profile. Stearic acid was incorporated into canola oil, mainly at the sn-1,3 positions, for the lipase reaction, and no new trans fatty acids formed. Most SL products did not have adequate solid fat content or beta' crystal forms for tub margarine, although these may be suitable for light margarine formulation.
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Affiliation(s)
- Stephen E Lumor
- Department of Food Science and Technology, University of Georgia, Athens 30602, USA
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12
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Avato P, Rosito I, Papadia P, Fanizzi FP. Cyanolipid-rich seed oils from Allophylus natalensis and A. dregeanus. Lipids 2005; 40:1051-6. [PMID: 16382577 DOI: 10.1007/s11745-005-1468-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As a continuation of our study on plants of the Sapindaceae, the chemical composition of the oil extracted from seeds of Allophylus natalensis (Sonder) De Winter and of A. dregeanus (Sonder) De Winter has been investigated. The oil from both species contained approximately equal amounts of TAG and type I cyanolipids (CL), 1-cyano-2-hydroxymethylprop-2-en-1-ol-diesters, with minor amounts of type III CL, 1-cyano-2-hydroxymethylprop-1-en-3-ol-diesters. Structural investigation of the oil components was accomplished by chemical, chromatographic (TLC, CC, GC, and GC-MS), and spectroscopic (IR, NMR) means. GC and GC-MS analysis showed that C20 FA were dominant in the CL components of the oil from the two species (44-80% vs. 21-26% in TAG), with cis-11-eicosenoic acid (36-46%) and cis 13-eicosenoic acid (paullinic acid, 23-37%) as the major esterified fatty acyl chains in A. natalensis and A. dregeanus, respectively. cis-Vaccenic acid was particularly abundant (11-31%) in the CL from A. dregeanus, whereas eicosanoic acid (10-22%) was also a major component of CL in both species.
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Affiliation(s)
- P Avato
- Dipartimento Farmaco-Chimico, Università, Bari, Italy.
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13
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Avato P, Pesante MA, Fanizzi FP, Santos CADM. Seed oil composition of Paullinia cupana var. sorbilis (Mart.) Ducke. Lipids 2003; 38:773-80. [PMID: 14506841 DOI: 10.1007/s11745-003-1126-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The chemical composition of the oil extracted from the seeds of Paullinia cupana var. sorbilis (Mart.) Ducke (syn. P. sorbilis) was investigated. Cyanolipids constituted 3% of the total oil from guaraná seeds, whereas acylglycerols accounted for 28%. 1H and 13C NMR analyses indicated that type I cyanolipids (1-cyano-2-hydroxymethylprop-2-ene-1-ol diesters) are present in the oil from P. cupana. GC and GC-MS analysis showed that cis-11-octadecenoic (cis-vaccenic acid) and cis-11-eicosenoic acids were the main FA (30.4 and 38.7%) esterified to the nitrile group. Paullinic acid (7.0%) was also an abundant component. Oleic acid (37.4%) was the dominant fatty acyl chain in the acylglycerols.
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Affiliation(s)
- P Avato
- Dipartimento Farmaco-Chimico, Università, 1-70125 Bari, Italy.
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14
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Abstract
We describe the results from the isolation and structural identification of the acylglycerol constituents of fruits from wild plants belonging to different species of Thapsia (Apiaceae). The isolated lipid fractions were analyzed and characterized by chemical, chromatographic, and spectroscopic means. In particular, 13C nuclear magnetic resonance data allowed the identification of petroselinic acid as the major fatty acid esterified to glycerol in the fruit oils from all the plant samples. This was also confirmed by gas chromatography (GC) and GC-mass spectrometry analyses of fatty acid methyl and butyl esters derivatives from Thapsia oil. The genus Thapsia should be regarded as a useful source for the extraction of petroselinic acid, which represents an important oleochemical raw material.
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Affiliation(s)
- P Avato
- Department of Pharmaceutical Chemistry, Università degli Studi di Bari, Italy.
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15
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Mannina L, Luchinat C, Emanuele MC, Segre A. Acyl positional distribution of glycerol tri-esters in vegetable oils: a 13C NMR study. Chem Phys Lipids 1999. [DOI: 10.1016/s0009-3084(99)00092-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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13C nuclear magnetic resonance characterization of the reaction products of lamb pregastric lipase-catalyzed hydrolysis of tributyrylglycerol. J AM OIL CHEM SOC 1998. [DOI: 10.1007/s11746-998-0274-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Complete 13C assignments and structural elucidation of n-3 polyunsaturated fatty acids by the use of a new 2D NMR technique: SAPHIR-HSQC. Chem Phys Lipids 1998. [DOI: 10.1016/s0009-3084(98)00059-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Jie MS, Mustafa J. High-resolution nuclear magnetic resonance spectroscopy--applications to fatty acids and triacylglycerols. Lipids 1997; 32:1019-34. [PMID: 9358427 DOI: 10.1007/s11745-997-0132-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
During the past two decades, nuclear magnetic resonance spectroscopy (NMR) has played an ever-increasing role in the structural determination of fatty acids, fatty acid derivatives and analogues, and in the analysis of the structures of triacylglycerols including the quantitative analysis of lipid mixtures. This article discusses some of the results obtained through the application of the NMR technique to lipid molecules and reviews the literature. To maintain brevity, this article does not cover the underlying theory of NMR spectroscopy as numerous books devoted to modern NMR spectroscopy have been published.
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Affiliation(s)
- M S Jie
- Department of Chemistry, University of Hong Kong.
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19
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Shaw AD, di Camillo A, Vlahov G, Jones A, Bianchi G, Rowland J, Kell DB. Discrimination of the variety and region of origin of extra virgin olive oils using 13C NMR and multivariate calibration with variable reduction. Anal Chim Acta 1997. [DOI: 10.1016/s0003-2670(97)00037-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Jie MSFLK, Pasha MK, Syed-Rahmatullah MSK. Fatty acids, fatty acid analogues and their derivatives. Nat Prod Rep 1997. [DOI: 10.1039/np9971400163] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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13C-NMR studies of polyunsaturated triacylglycerols of type AAA and mixed triacylglycerols containing saturated, acetylenic and ethylenic acyl groups. Chem Phys Lipids 1995. [DOI: 10.1016/0009-3084(95)02478-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Lie Ken Jie MS, Lam C. 13C-Nuclear magnetic resonance spectroscopic studies of triacylglycerols of type AAA containing (Z)- and (E)-monoethylenic acyl groups. Chem Phys Lipids 1995. [DOI: 10.1016/0009-3084(95)02479-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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23
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Aursand M, Jørgensen L, Grasdalen H. Positional distribution of ω3 Fatty acids in marine lipid triacylglycerols by high-resolution13C nuclear magnetic resonance spectroscopy. J AM OIL CHEM SOC 1995. [DOI: 10.1007/bf02541085] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Howarth OW, Samuel CJ, Vlahov G. The σ-inductive effects of CC and CC bonds: predictability of NMR shifts at sp2carbon in non-conjugated polyenoic acids, esters and glycerides. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/p29950002307] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Gunstone F, Seth S. A study of the distribution of eicosapentaenoic acid and docosahexaenoic acid between the α and β glycerol chains in fish oils by 13C-NMR spectroscopy. Chem Phys Lipids 1994. [DOI: 10.1016/0009-3084(94)90095-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Gussoni M, Greco F, Pegna M, Bianchi G, Zetta L. Solid state and microscopy NMR study of the chemical constituents of Afzelia cuanzensis seeds. Magn Reson Imaging 1994; 12:477-86. [PMID: 8007778 DOI: 10.1016/0730-725x(94)92542-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Multi-echo, chemical shift selective, and 3D NMR imaging at microscopy resolution, and CP/MAS 13C NMR spectroscopy have been applied to the chemistry study of oil in oil-rich seeds of Afzelia cuanzensis, a tropical plant belonging to the Leguminosae taxum Caesalpinoideae or Caesalpinaceae.
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Affiliation(s)
- M Gussoni
- Università di Milano, Dip. di Scienze e Tecnologie Biomediche, Italy
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Gussoni M, Greco F, Consonni R, Molinari H, Zannoni G, Bianchi G, Zetta L. Application of NMR microscopy to the histochemistry study of olives (Olea europaea L.). Magn Reson Imaging 1993; 11:259-68. [PMID: 8455436 DOI: 10.1016/0730-725x(93)90031-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- M Gussoni
- Università Milano, Dipartimento di Scienze e Tecnologie Biomediche, Italy
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Aursand M, Grasdalen H. Interpretation of the 13C-NMR spectra of omega-3 fatty acids and lipid extracted from the white muscle of Atlantic salmon (Salmo salar). Chem Phys Lipids 1992. [DOI: 10.1016/0009-3084(92)90061-s] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gunstone F. The 13C-NMR spectra of six oils containing petroselinic acid and of aquilegia oil and meadowfoam oil which contain δ5 acids. Chem Phys Lipids 1991. [DOI: 10.1016/0009-3084(91)90121-q] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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