Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat
Using a combination of gas–liquid chromatography and mass spectrometry, the presence of 39 aliphatic hydrocarbons was firmly established in the unsaponifiable fraction of anhydrous milk fat. The hydrocarbons were the C14 to C27 and the C29 to C31 straight-chain paraffins, their monoolefin analogs, a...
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1973-05-01
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Online Access: | http://www.sciencedirect.com/science/article/pii/S0022227520368887 |
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doaj-da129ac657b44435951f57c8e1e680d12021-04-24T05:49:35ZengElsevierJournal of Lipid Research0022-22751973-05-01143306311Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fatVincent P. Flanagan0Aldo Ferretti1Dairy Products Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Washington, D.C. 20250Dairy Products Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Washington, D.C. 20250Using a combination of gas–liquid chromatography and mass spectrometry, the presence of 39 aliphatic hydrocarbons was firmly established in the unsaponifiable fraction of anhydrous milk fat. The hydrocarbons were the C14 to C27 and the C29 to C31 straight-chain paraffins, their monoolefin analogs, and the C25 to C29 branched alkanes. Phytene (3,7,11,15-tetramethyl-n-hexadec-2-ene), identified for the first time in milk fat, was isolated and identified by high-resolution mass spectrometry and infrared analysis. The total hydrocarbon content amounted to 30 ppm of the milk fat. Polychlorinated biphenyls also were detected in trace amounts in the area of the chromatogram between the C18 and the C23 hydrocarbons.http://www.sciencedirect.com/science/article/pii/S0022227520368887straight-chain alkanesalkenesbranched alkanesphytenegas–liquid chromatographymass spectrometry |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vincent P. Flanagan Aldo Ferretti |
spellingShingle |
Vincent P. Flanagan Aldo Ferretti Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat Journal of Lipid Research straight-chain alkanes alkenes branched alkanes phytene gas–liquid chromatography mass spectrometry |
author_facet |
Vincent P. Flanagan Aldo Ferretti |
author_sort |
Vincent P. Flanagan |
title |
Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
title_short |
Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
title_full |
Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
title_fullStr |
Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
title_full_unstemmed |
Hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
title_sort |
hydrocarbons and polychlorinated biphenyls from the unsaponifiable fraction of anhydrous milk fat |
publisher |
Elsevier |
series |
Journal of Lipid Research |
issn |
0022-2275 |
publishDate |
1973-05-01 |
description |
Using a combination of gas–liquid chromatography and mass spectrometry, the presence of 39 aliphatic hydrocarbons was firmly established in the unsaponifiable fraction of anhydrous milk fat. The hydrocarbons were the C14 to C27 and the C29 to C31 straight-chain paraffins, their monoolefin analogs, and the C25 to C29 branched alkanes. Phytene (3,7,11,15-tetramethyl-n-hexadec-2-ene), identified for the first time in milk fat, was isolated and identified by high-resolution mass spectrometry and infrared analysis. The total hydrocarbon content amounted to 30 ppm of the milk fat. Polychlorinated biphenyls also were detected in trace amounts in the area of the chromatogram between the C18 and the C23 hydrocarbons. |
topic |
straight-chain alkanes alkenes branched alkanes phytene gas–liquid chromatography mass spectrometry |
url |
http://www.sciencedirect.com/science/article/pii/S0022227520368887 |
work_keys_str_mv |
AT vincentpflanagan hydrocarbonsandpolychlorinatedbiphenylsfromtheunsaponifiablefractionofanhydrousmilkfat AT aldoferretti hydrocarbonsandpolychlorinatedbiphenylsfromtheunsaponifiablefractionofanhydrousmilkfat |
_version_ |
1721511874959245312 |