Hydrogenated Marine Oil Research Articles

The analysis of organically bound elements (As, Se, Br) and phosphorus in raw, refined, bleached and hydrogenated marine oils produced from fish of different quality

AbstractMarine oils have been produced in pilot plant by boiling, pressing and separation of the press liquor from raw material (mackerel and herring) of different levels of spoilage. The difference in quality is obtained by varying the period of storage. Some of the oil samples have been refined and hydrogenated. In samples taken both from the raw oils and from oils at the different steps in the processing, organic bound arsenic, selenium, bromine and phosphorus are analyzed. When the raw material deteriorates during storage, an increase in the selenium and phosphorus content in the oils produced from these materials is observed, whereas the bromine and the arsenic content is nearly constant. During the refining the arsenic and phosphorus disappear almost completely from the oils, whereas the selenium content is reduced to about two‐thirds and the bromine content is nearly unaffected. In the hydrogenation step the selenium disappears relatively fast and the bromine more slowly.

Isomers of monoethylenic fatty acids in some partially hydrogenated marine oils

AbstractAn analytical study of the monoethylenic isomers in commercial samples of partially hydrogenated herring, whale and seal oils is presented. The results show that with hydrogenated herring oil there is a slight decline in monoenetrans content from 37% in C16 through to 32% in C22. With both whale and seal oils, monoenetrans contents were constant at 54% and 59%, respectively, throughout all chain lengths. In general thecis andtrans positional isomers from hydrogenated whale and seal oils were more scattered than those from hydrogenated herring oil; however in each oil the majorcis isomers of each chainlength were indicative of originalcis fatty acid isomers in the raw oils.

Estimation of Chlorinated Pesticide Residues in Animal and Vegetable Oils

Abstract A procedure for the determination of chlorinated pesticide residues in cottonseed oil, hydrogenated marine oil, seal oil, butter oil, and processed beef tallow is described. The oil is spread in the form of a thin film over a large surface area provided by Celite 545. The pesticides are extracted from the oil-coated Celite with 80% aqueous acetonitrile, partitioned into Skellysolve F, and cleaned up on a basic alumina (activity III) column. Gas chromatography with an electron capture detector is used for qualitative and quantitative estimations. The average recovery of six commonly used chlorinated pesticides (aldrin, dieldrin, heptachlor, heptachlor epoxide, lindane, and p,p'-DDT) at levels of 0.1 and 0.25 ppm ranged from 82 to 106%.

Blood Factor XI after Fat-Rich Meals

SummaryControlled meals were given to normal persons and to certain patients, and blood coagulation was investigated before and after the meal, especially with an assay sensitive for activated antihemophilic C factor (AHC5 = activated f. XI).After bread and rich amounts of margarine (produced mainly from hydrogenated marine oils), the AHC’ assay in fresh plasma registered a significant acceleration about 5 hours after the meal. No significant changes were measured in the levels of AHA (f. VIII), AHB (f. IX) and proconvertin (f. VII). A weaker tendency to acceleration in AHC5 assay seemed also to occur after intake of vegetable margarine (produced from hydrogenated vegetable oils). Bread with low or high amounts of cow butter gave no acceleration.The active principle in the postprandial plasmas could not be demonstrated after a few days of storage at — 20° C.The hypothesis that the acceleration effect is due to an activation of blood AHC was supported by the observation that no corresponding effect was measured after margarine meals to patients with AHC deficiency.Patients with von Willebrand’s disease showed the same activation as normals.The activation seemed to be prevented by intake of linseed oil prior to the margarine meal.The results are discussed.