[Show abstract][Hide abstract] ABSTRACT: The fatty acid composition of the liver oil from the Black Sea dogfish Squalus acanthias, as well as its seasonal variations were determined. A scheme for concentration of polyunsaturated fatty acids from the dogfish liver oil by urea complexation was proposed. From 360g of free fatty acids a 48g concentrate was obtained, containing 7,8% C20:4, 16,4% C20:5. 9,2% C22:5 and 49,7% C22:6.Se ha determinado la composición en ácidos grasos del aceite de hígado de cazón (Squalus acanthias) del Mar Negro, así como sus variaciones estacionales. Se propone un esquema para la concentración de ácidos grasos poliinsaturados de aceite de hígado de cazón mediante complexión de urea. A partir de 360g de ácidos grasos libres se obtuvo un concentrado de 48g, que contenía 7,8% C20:4, 16,4% C20:5, 9,2% C22:5 y 49,7% C22:6.
No preview · Article · May 1997 · Grasas y Aceites
[Show abstract][Hide abstract] ABSTRACT: The composition of the main lipid classes in leaves, pericarp and seeds of pepper (Capsicum annuum L), and the effect of seedlings immersion in lead and sodium acetate nutrient solutions were investigated. Lead ions accumulated mainly in leaves; in pericarp and seeds the concentration of lead was more than 10 times lower. The influence of lead ions on the leaf lipid composition was expressed most in the last stages of plant development. Treatment with lead acetate caused a decrease in the activity of the antioxidative complex in pepper seeds.
No preview · Article · Feb 1995 · Journal of the Science of Food and Agriculture
[Show abstract][Hide abstract] ABSTRACT: The lipid composition of the red alga Chondria tenuissima inhabiting waters with different salinities [Black Sea (salinity 18parts per thousand) and Lake of Pomorie (salinity 50parts per thousand)] has been investigated. The total acyl lipid content was lower at the higher salinity. The observed changes of the concentrations of the main lipid classes and to a lesser extent of fatty acids could be due to the changes of salinity.
[Show abstract][Hide abstract] ABSTRACT: The lipid and sterol composition of roots and leaves of Zea mays, as well as their changes after treatment of the plants with lead and sodium acetate, were investigated and the results obtained compared with those for Phaseolus vulgaris treated in the same way. Lead ions significantly affected lipid metabolism, but not that of sterols. The relative concentrations of monogalactosyl diglycerides and phospholipids increased. The strongest effect of the lead ions was on the dehydrogenation of the fatty acids. The significant changes observed after treatment with sodium acetate are an indication that it causes some type of salt stress.