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Characterization of omega-3-docosahexaenoic acid-containing molecular species of phospholipids in rainbow trout liver
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UNSPECIFIED (1996) Characterization of omega-3-docosahexaenoic acid-containing molecular species of phospholipids in rainbow trout liver. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 44 (10). pp. 3120-3125. ISSN 0021-8561.
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Abstract
Four major phospholipids from rainbow trout liver were purified by chromatography, and the phospholipid classes and their molecular species were quantitatively and qualitatively determined by P-31 nuclear magnetic resonance, gas chromatography, liquid secondary ion mass spectrometry, and liquid secondary ion mass spectrometry combined with tandem mass spectrometry. Trout liver phospholipids consist mainly of glycerophosphatidylcholine (GPC; 67%), glycerophosphatidylethanolamine (GPE; 22%), glycerophosphatidylserine (GPS; 10%), and glycerophosphatidylinositol (GPI; 1.6%); the contents of 22:6 omega-3 fatty acid in the first three phospholipid classes were 34% (GPC), 31% (GPE), and 27% (GPS), respectively, and abundant molecular species were 1-palmitoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine (GPC 16:0-22:6) (see Table 2 for phospholipid molecular species designations), 1-eicosaenoyl-2-docosahexaenoyl-sn-glycero-3-phosphoethanolamine (GPE 20: 1-22:6), 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphoethanolamine (GPE 18:0-22:6), 1-oleoyl-2-docosahexaenoyl-sn-glycero-3-phosphoethanolamine (GPE 18:1-22:6), 1-linoleoyl-2-docosahexaenoyl-sn-glycero-3-phosphoethanolamine (GPE 18:2-22:6), 1-palmitoyl-2-docosahexaenoyl-sn-glycero-3-phosphoethanolamine (GPE 16:0-22:6), 1-palmitoyl-2-docosahexaenoyl-sn-glycero-3-phosphoserine (GPS 16:0-22:6), and 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphoserine (GPS 18:0-22:6). GPI in trout liver lacks molecular species containing 22:6 omega-3 fatty acid. The study clearly indicates that a very high content of 22:6 omega-3 fatty acid-containing molecular species within phospholipids, mainly within GPC and GPE, is characteristic of rainbow trout liver.
Item Type: | Journal Article | ||||
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Subjects: | S Agriculture Q Science > QD Chemistry T Technology > TX Home economics |
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Journal or Publication Title: | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | ||||
Publisher: | AMER CHEMICAL SOC | ||||
ISSN: | 0021-8561 | ||||
Official Date: | October 1996 | ||||
Dates: |
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Volume: | 44 | ||||
Number: | 10 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 3120-3125 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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