SUMMARY
Lipid material from skin, depot fat, and dark and white meat from broiler‐type male chickens was fractionated into neutral lipids and phospholipids by column chromatography. The fatty acids of these fractions were analyzed by gas‐liquid chromatography.
Muscle tissues contained relatively larger quantities of phospholipids than did skin and depot fat. Neutral lipids and phospholipids had similar percentages of unsaturated fatty acids. Some 18 different fatty acids were found in the neutral lipids, and 22 fatty acids were found in the phospholipid fraction. The composition of fatty acids in the neutral lipids was similar in the four tissues. Phospholipids from muscle tissues contained more long‐chain fatty acids than phospholipids from skin and depot fat. Arachidonic acid was found to be one of the major fatty acids in the phospholipid fraction.
The viscosities, densities, and refractive indices at 25, 30, 35, and 40 "C were determined for the systems: aniline + toluene (A + T), N,N-dimethylaniline + toluene (DMA + T), and aniline + nbutanol (A + B). From the experimental results the excess volume, excess viscosity, and excess molar free energy of activation of flow were calculated. The deviations from ideality for the excess thermodynamic functions are more important for the systems (A + T) and (A + B) than for (DMA + T). This fact is explained by the existence of dispersion forces in the mixture and by the presence of hydrogen bonds in pure aniline and pure butanol.
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