Characterization of (E,E)-farnesol and its fatty acid esters from anal scent glands of nutria (Myocastor coypus) by gas chromatography–mass spectrometry and gas chromatography–infrared spectrometry

2007 ◽  
Vol 1165 (1-2) ◽  
pp. 136-143 ◽  
Author(s):  
Hyeunjoo Lee ◽  
Steven Finckbeiner ◽  
Jose S. Yu ◽  
David F. Wiemer ◽  
Thomas Eisner ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Fatty Acid ◽  
Fatty Acid Esters ◽  
Gas Chromatography Mass Spectrometry ◽  
Infrared Spectrometry ◽  
Scent Glands ◽  
Myocastor Coypus ◽  
Acid Esters

scholarly journals Simultaneous determination of fatty acid esters 2-chloro-1, 3-propandiol(2-mcpd), 3-chloro-1,2- propandiol(3-mcpd) and glycidol in vegetable oils by gas chromatography mass spectrometry GC-MS/MS

2019 ◽  
Vol 2 (3) ◽  
pp. 67-73
Author(s):  
Tam Le Thanh ◽  
Duy Nguyen Thanh ◽  
Kiet Ly Tuan ◽  
Tan Phu Minh ◽  
Hung Nguyen Quoc ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fatty Acid ◽  
Phenylboronic Acid ◽  
Fatty Acid Esters ◽  
Gas Chromatography Mass Spectrometry ◽  
Food Contaminants ◽  
Refined Oil ◽  
Limit Of Quantitation ◽  
Repeatability And Reproducibility ◽  
Acid Esters

The food contaminants including 3-chloro-1,2-propanediol (3-MCPD) and 3-MCPD fatty acid esters have been a matter of great concern in the past few years due to their toxicity and their occurrence in numerous foods. Recently, significant amounts of the isomeric compounds 2-chloro-1,3-propanediol (2-MCPD) fatty acid esters have been detected in refined oil samples. Gas Chromatography (GC) coupled with mass spectroscopy (MS) was used for the quantification of fatty acid esters of 2-Chloro-1,3-propandiol (2-MCPD), 3-Chloro-1,2- propandiol (3-MCPD) and glycidol in oil. Internal standards including 3-MCPD-ester-d5 (rac 1,2-bis-palmitoyl-3-chloropropanediol-d5), 2-MCPD-ester-d5 (1,3-Distearoyl-2- chloropropanediol-d5) and Glycidyl sterate-d5 were added to samples. Spiked samples were, then, incubated in NaBr/H2SO4 and H2SO4/MeOH solutions. They were, eventually, extracted with ethyl acetate and n-hexane solvents in order to convert Glycidyl esters to free MCPD and glycidol in samples before using phenylboronic acid derivative. The limit of quantitation was of 0.1 ppm (mg/kg). The recoveries at the concentration of 0.1 mg/kg ranged from 80 to 120% and the repeatability and reproducibility were less than 10%.

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