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Effects of dietary fat on the amounts and proportions of the individual lipids in turkey muscle

Published online by Cambridge University Press:  09 March 2007

T. S. Neudoerffer
Affiliation:
Agricultural Research Council Food Research Institute, Low Temperature Research Station, Cambridge
C. H. Lea
Affiliation:
Agricultural Research Council Food Research Institute, Low Temperature Research Station, Cambridge
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Abstract

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1. Lipid extracted from breast and leg muscle of 10-week-old turkeys was fractionated by preparative thin-layer chromatography and five individual ‘neutral’ and eight individual phospholipid fractions, representing 95% by weight of the extractable lipid, were recovered from the plates for analysis.

The ‘neutral’ lipids from breast and leg muscle consisted mainly of triglyceride (202–497 and 1644–2333 mg/100 g), together with cholesterol (74 and 103 mg/100 g), free fatty acid (27 and 123 mg/100 g), diglyceride (17 and 66 mg/100 g) and cholesterol ester (9 and 12 mg/100 g).

The phospholipids contained phosphatidylcholine (367 and 500 mg/100 g), phosphatidylethanolamine (157 and 279 mg/100 g), phosphatidylinositol (60 and 109 mg/100 g), sphingomyelin (43 and 62 mg/100 g), phosphatidylserine (31 and 61 mg/100 g), ‘cardiolipin’ (23 and 35 mg/100 g), lysophosphatidylcholine (9 and 11 mg/100 g) and ‘origin fraction’ (6 and 7 mg/100 g), accounting together (700 mg and 1070 mg/100 g for breast and leg muscle respectively) for 98% of the lipid phosphorus extracted.

Partial replacement of carbohydrate in the cereal-based diet by beef fat (2·5%) or anchovy oil (2·5 or 5·0%) had no effect on the amount of any of the lipid fractions, except for triglyceride, which varied considerably and was lowest in tissue from groups receiving 2·5% anchovy oil.

Type
Research Article
Copyright
Copyright © The Nutrition Society 1968

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