0000000000857968

AUTHOR

Pierre Lambelet

showing 3 related works from this author

Analysis of eicosapentaenoic and docosahexaenoic acid geometrical isomers formed during fish oil deodorization.

2006

International audience; Addition of long-chain polyunsaturated fatty acids (LC-PUFAs) from marine oil into food products implies preliminary refining procedures of the oil which thermal process affects the integrity of LC-PUFAs. Deodorization, the major step involving high temperatures, is a common process used for the refining of edible fats and oils. The present study evaluates the effect of deodorization temperature on the formation of LC-PUFA geometrical isomers. Chemically isomerized eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were used as reference samples. Fish oil samples have been deodorized at 180, 220 and 250 °C for 3 h and pure EPA and DHA fatty acid methyl esters…

Chromatography GasHot TemperatureDocosahexaenoic Acids[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering030309 nutrition & dietetics01 natural sciencesBiochemistryHigh-performance liquid chromatographyAnalytical ChemistrySILVER-ION CHROMATOGRAPHY03 medical and health sciencesFish OilsIsomerismDECOSAHEXAENOIC ACID[SDV.IDA]Life Sciences [q-bio]/Food engineeringOrganic chemistry[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process EngineeringChromatography High Pressure Liquidchemistry.chemical_classificationFlame IonizationFISH OIL0303 health sciencesChromatographyChemistry010401 analytical chemistryOrganic ChemistryFatty acidReproducibility of ResultsGeneral Medicine[SDV.IDA] Life Sciences [q-bio]/Food engineeringFish oilEicosapentaenoic acidTRANS FATTY ACIDS0104 chemical sciencesEicosapentaenoic Acid13. Climate actionDocosahexaenoic acidDEODORIZATIONOdorantsFatty Acids Unsaturatedlipids (amino acids peptides and proteins)Gas chromatographyChromatography Thin LayerIsomerizationCis–trans isomerismTolueneJournal of chromatography. A
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Detection of lactobacillic acid in low erucic rapeseed oil--A note of caution when quantifying cyclic fatty acid monomers in vegetable oils.

2010

International audience; The purpose of this work was to identify an unknown component which has been detected during the analysis of cyclic fatty acid monomers (CFAMs) in low erucic acid rapeseed oils (LEAR). A sample of crude LEAR was transformed into fatty acid methyl esters (FAMEs) and hydrogenated using PtO2. The hydrogenated sample was fractionated by reversed-phase high-performance liquid chromatography (RP-HPLC) and the fraction containing the CFAMs transformed into picolinyl esters. Analysing these picolinyl derivatives by gas-liquid chromatography coupled to mass spectrometry (GC-MS) showed that the unknown product observed in LEAR is the 11,12-methylene-octadecanoic acid. This cyc…

RapeseedFraction (chemistry)Mass spectrometry01 natural sciencesBiochemistryHigh-performance liquid chromatographyGas Chromatography-Mass SpectrometryTHERMAL DEGRADATIONFatty Acids Monounsaturated03 medical and health scienceschemistry.chemical_compoundLOW ERUCIC ACID RAPESEED OIL[SDV.IDA]Life Sciences [q-bio]/Food engineering1112-METHYLENE-OCTADECANOIC ACIDOrganic chemistryPlant Oils[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process EngineeringMolecular Biology030304 developmental biologychemistry.chemical_classification0303 health sciencesChromatographyChemistryCYCLIC FATTY ACID MONOMERS010401 analytical chemistryOrganic ChemistryFatty AcidsFatty acidMASS-SPECTROMETRYCell BiologySunflower0104 chemical sciencesErucic acidRapeseed OilQuantitative analysis (chemistry)Chemistry and physics of lipids
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Thermal degradation of long-chain polyunsatured fatty acids during deodorization of fish oil

2006

International audience; Long-chain polyunsaturated fatty acids (LC-PUFA) of the n-3 series, particularly eicosapentaenoic (EPA) and docosahexaenoic (DHA) acid, have specific activities especially in the functionality of the central nervous system. Due to the occurrence of numerous methylene-interrupted ethylenic double bonds, these fatty acids are very sensitive to air (oxygen) and temperature. Non-volatile degradation products, which include polymers, cyclic fatty acid monomers (CFAM) and geometrical isomers of EPA and DHA, were evaluated in fish oil samples obtained by deodorization under vacuum of semi-refined fish oil at 180, 220 and 250 °C. Polymers are the major degradation products g…

LONG-CHAIN POLYUNSATURED FATTY ACIDDEODORIZATIONlipids (amino acids peptides and proteins)[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM][SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM]GEOMETRICAL ISOMERIZATIONTHERMAL DEGRADATION
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