Effect of hydrogenation on density and viscosity of sunflowerseed oil

1995 ◽  
Vol 72 (12) ◽  
pp. 1519-1522 ◽  
Author(s):  
Hüseyin Topallar ◽  
Yüksel Bayrak ◽  
Mehmet Iscan
Keyword(s):  
Sunflowerseed Oil

The structure of the octadecadienoic acids formed in the hydrogenation of sunflowerseed oil

1971 ◽  
Vol 7 (6) ◽  
pp. 675-678
Author(s):  
G. A. Preobrazhenskaya ◽  
S. G. Yunusova ◽  
A. I. Glushenkova ◽  
A. L. Markman
Keyword(s):  
Sunflowerseed Oil ◽  
Octadecadienoic Acids

scholarly journals Effect of dietary fats rich in lauric, myristic, palmitic, oleic or linoleic acid on plasma, hepatic and biliary lipids in cholesterol-fed hamsters

1997 ◽  
Vol 77 (4) ◽  
pp. 605-620 ◽  
Author(s):  
Elke A. Trautwein ◽  
Angelika Kunath-Rau ◽  
Juliane Dietrich ◽  
Stephan Drusch ◽  
Helmut F. Erbersdobler
Keyword(s):  
Fatty Acids ◽  
Olive Oil ◽  
Rapeseed Oil ◽  
Plasma Cholesterol ◽  
Coconut Oil ◽  
Palm Stearin ◽  
Dietary Fats ◽  
Cholesterol Gallstones ◽  
Biliary Lipids ◽  
Sunflowerseed Oil

Effects of different dietary fats on plasma, hepatic and biliary lipids were determined in male golden Syrian hamsters (Mesocricetus auratus) fed on purified diets for 7 weeks. Diets were made by blending different fats containing characteristic fatty acids: butter (14:0 + 16:0), palm stearin (16:0), coconut oil (12:0 + 14:0), rapeseed oil (18:1), olive oil (18:l) and sunflowerseed oil (18:2). In all diets except the sunflowerseed oil diet dietary 18:2 was held constant at 2% energy. Total fat supplied 12% of energy and cholesterol was added at 4 g/kg diet. Plasma cholesterol and triacyglycerol concentrations were increased by dietary cholesterol. After 7 weeks, plasma cholesterol concentrations were highest with the palm Stearin, coconut oil and olive oil diets (8·9, 8·9 and 9·2 mmol/l) and lowest with the rapeseed oil and sdowerseed oil diets (6·7 and 5·5 mmol/l) while the butter diet was intermediate (8·5 mmol/l). Hepatic cholesterol concentration was highest in hamsters fed on the olive oil diet and lowest with the palm stearin diet (228v. 144 µmol/g liver). Biliary lipids, lithogenic index and bile acid profile of the gall-bladder bile did not differ significantly among the six diets. Although the gallstone incidence was generally low in this study, three out of 10 hamsters fed on the palm stearin diet developed cholesterol gallstones. In contrast, no cholesterol gallstones were found with the other diets. Rapeseed and dowerseed oils caused the lowest plasma cholesterol and triacyglycerol concentrations whereas olive oil failed to demonstrate a cholesterol-lowering effect compared with diets rich in saturated fatty acids. Since 18:2 was kept constant at 2% of energy in all diets, the different responses to rapeseed and olive oils could possibly be attributed to their different contents of 16:0 (5·6 %v. 12·8% respectively). Other possible explanations are discussed.

scholarly journals Pengaruh Temperatur Terhadap Degradasi Pigmen Tomat dalam Beberapa Jenis Minyak Nabati Komersial

2017 ◽  
Vol 16 (3) ◽  
Author(s):  
Yoga Aji Handoko ◽  
Indriatmoko Indriatmoko
Keyword(s):  
Optical Absorption ◽  
Vegetable Oil ◽  
Canola Oil ◽  
Coconut Oil ◽  
Temperature Treatment ◽  
Antioxidant Compounds ◽  
Sunflowerseed Oil ◽  
Pigment Stability ◽  
Temperature Levels ◽  
The Stability

The study of vegetable oils fortified with crude extract of carotenoid pigments from tomatothat contains lycopene as dominant antioxidant compounds becomes an interesting researchto be done. The aim of this research is testing the stability of the pigment of tomatoesextracts in the vegetable oil treated on some temperature levels. Spectroscopy method isused to measure the respond of pigment stability in fortified vegetables oils which treated bytemperature from 250C to 700C. Before the measurement is done by a spectrophotometerwhich connected to the thermostat, as much as 1 mg of extract pigment of tomatoes in crystalform was weighed for per sampel, then dissolved into 10 ml palm oil, coconut oil, sunflowerseed oil, and canola oil separately. The results showed that the temperature treatment causesthe value of the optical absorption decreased, which means that the pigment moleculesexperienced instability. The amount of impairment of the optical absorption withtemperature treatment from 250C to 700C at a wavelength of 482 nm, respectively, are: palmoil (Abs = 0.201); coconut oil (Abs = 0.213), sunflower oil (Abs = 0.232); and canola oil(Abs = 0.260). Decreasing value of absorbance (Abs) also indicates the lycopenedegradation that formed the derivatives molecule of this pigment.Keywords: fortification, lycopene, vegetable oil, temperature, tomato

Pretreatment efficiency for physical refining of sunflowerseed oil

1994 ◽  
Vol 71 (12) ◽  
pp. 1357-1361 ◽  
Author(s):  
Etelka Dimic ◽  
Dj. Karlovic ◽  
J. Turkulov
Keyword(s):  
Physical Refining ◽  
Sunflowerseed Oil

Sunflowerseed oil

1995 ◽  
pp. 132-152 ◽  
Author(s):  
W. H. Morrison ◽  
R. J. Hamilton ◽  
C. Kalu
Keyword(s):  
Sunflowerseed Oil

Relationship Between Arachidonic Acid Content Of Blood Platelets And Their TXA2-Propduction Upon Stimulation

1981 ◽  
Author(s):  
G Hornstra ◽  
E Haddeman ◽  
J A Don
Keyword(s):  
Arachidonic Acid ◽  
Fatty Acid ◽  
Platelet Rich Plasma ◽  
Thrombus Formation ◽  
Blood Platelets ◽  
Good Evidence ◽  
Arachidonic Acid Content ◽  
Positive Correlation ◽  
Sunflowerseed Oil ◽  
Activated Platelets

There is good evidence that the potency of activated platelets to produce thromboxane A2 (TxA2) is of primary importance in the regulation of arterial thrombus formation. Therefore it is useful to know the factors that determine platelet TxA2-production. In order to investigate the importance of the platelet arachidonic acid (AA) content in this respect, 6 groups of 24 rats were fed various diets which were likely to induce different platelet AA-contents. After 15 weeks of feeding, platelet rich plasma (PRP) of 4 rats were pooled. In one part of each PRP pool aggregation was triggered with four doses of collagen. After 5 minutes the aggregated PRP was processed for measuring the HHT, produced by the activated platelets, (CG/MS) which is considered a measure for the TxA2 produced. The other part of the PRP was used for measuring the fatty acid composition (GLC) of the 5 major phospholipid (PL) classes (separated by two-dimensional TLC). The various diets did not cause major changes in platelet total PL content and PL class distribution. Highly significant changes in the fatty acid compositions of platelet PL classes were observed. A striking positive correlation was found between the lyso-lecithin and the AA-con- tent of blood platelets, which suggests a functional interaction between these two parameters. There was also a highly significant, positive correlation between the AA-content of platelet PL and the TxA2-production by these platelets. Platelets of sunflowerseed oil fed animals did not fit this relationship because their TxA2-production is too high in relation to their AA-content. The relationships are essentially similar for total PL and the various PL classes and do not change when taking into account the presence of other long chain polyunsaturated fatty acids, known to compete with AA for the cyclo oxygenase enzyme system. From this study it is apparent that the platelet AA-content is an important determinant of TxA2 formation.

The Effect Of Dietary Fish Oils On Hemostasis, Thrombosis And Some Underlying Processes

1981 ◽  
Author(s):  
E Haddeman ◽  
G Hornstra ◽  
J A Don
Keyword(s):  
Platelet Aggregation ◽  
Fish Oil ◽  
Fish Oils ◽  
Oil Sand ◽  
Sunflowerseed Oil ◽  
Dietary Fish ◽  
Significant Depression ◽  
Tail Tip ◽  
Induced Aggregation

Epidemiological evidence indicate fish oils to be beneficial in the prevention of ischemic heart disease. We therefore investigated the (anti-)thrombotic properties of two of these oils in rats. The animals were fed diets containing 5 energy % (en%) sunflowerseed oil(SO) + 45 en% cod liver oil (CLO) or another fish oil(FO). As compared with a diet containing50 en% SO, both fish oils prolong the bleeding time significantly (tail tip transection). CLO, but notFO, lowers arterial thrombosis tendency (thrombotic obstruction of aorta prosthesis). Both fish oils lower the arachidonicacid content of platelet- and vascular phospholipids, as well as the production of platelet TxA2 (measured as MDA-spectrofotometry- or HHT- GC/MS) and vascular PGI2 (measured by platelet aggregation bio-assay or as 6 keto-PGF1α-GC/MS). TxA3 and PGI3 formation from endogenous precursors does not occur in detectable amounts. Thrombin induced platelet aggregation in vitro is enhanced upon fish oil feeding, whereas collagen-induced aggregation is depressed. ADP-induced aggregation is not affected when measured in vitro. In circulating blood, however, it appea red enhanced (only CLO was tested). CLO- (but not FO-) feeding results in a lower vessel wall induced clotting response. As compared with SO-feeding, both fish oils indu ce a significant depression of intrinsic (APTT) and extrin sic(PT) plasma coagulability. Thus the effects of dietary fish oils on hemostatic parameters are manifold and greatly dependent on the origin (and composition?) of the oil. Their depressing effect on the generation of platelet prostanoids may provide a rationale for their dietary use to lower thrombotic risks. Further studies are indicated, however, to explain the discrepancies between the various fish oil sand to explore their long-term physiological and pathological effects.

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