scholarly journals Novel effects of diets enriched with corn oil or with an olive oil/sunflower oil mixture on vitamin K metabolism and vitamin K-dependent proteins in young men

2002 ◽  
Vol 43 (6) ◽  
pp. 878-884
Author(s):  
Leon J. Schurgers ◽  
Martin J. Shearer ◽  
Berry A.M. Soute ◽  
Ibrahim Elmadfa ◽  
Julia Harvey ◽  
...  
2002 ◽  
Vol 132 (12) ◽  
pp. 3642-3649 ◽  
Author(s):  
Nadia Mekki ◽  
Monique Charbonnier ◽  
Patrick Borel ◽  
Jeannie Leonardi ◽  
Christine Juhel ◽  
...  

2009 ◽  
Vol 27 (Special Issue 1) ◽  
pp. S185-S187 ◽  
Author(s):  
Z. Réblová ◽  
D. Tichovská ◽  
M. Doležal

Relationship between polymerised triacylglycerols formation and tocopherols degradation was studied during heating of four commercially accessible vegetable oils (rapeseed oil, classical sunflower oil, soybean oil and olive oil) on the heating plate with temperature 180°C. The content of polymerised triacylglycerols 6% (i.e. half of maximum acceptable content) was achieved after 5.3, 4.2, 4.1, and 2.6 hours of heating for olive oil, soybean oil, rapeseed oil and sunflower oil, respectively, while decrease in content of total tocopherols to 50% of the original content was achieved after 3.4, 1.6, 1.3, and 0.5 hours of heating for soybean oil, rapeseed oil, sunflower oil and olive oil, respectively. Because of the high degradation rate of tocopherols, decrease in content of total tocopherols to 50% of the original content was achieved at content of polymerised triacylglycerols 0.6%, 1.9%, 2.8% and 4.9% for olive oil, rapeseed oil, sunflower oil and soybean oil, respectively, i.e. markedly previous to the frying oil should be replaced.


Nutrients ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2390 ◽  
Author(s):  
Navarro-Hortal ◽  
Ramírez-Tortosa ◽  
Varela-López ◽  
Romero-Márquez ◽  
Ochoa ◽  
...  

Diet plays a decisive role in heart physiology, with lipids having especial importance in pathology prevention and development. This study aimed to investigate how dietary lipids varying in lipid profile (virgin olive oil, sunflower oil or fish oil) affected the heart of rats during aging. Heart histopathology, mitochondrial morphometry, and oxidative status were assessed. Typical histopathological features associated with aging, such as valvular lesions, endomyocardical hyperplasia, or papillary muscle calcification, were found at a low extent in all the experimental groups. The most relevant finding was that inflammation registered by fish oil group was lower compared to the other treatments. At the ultrastructural level, heart mitochondrial area, perimeter, and aspect ratio were higher in fish oil-fed rats than in those fed on sunflower oil. Concerning oxidative stress markers, there were differences only in coenzyme Q levels and catalase activity, lower in sunflower oil-fed animals compared with those fed on fish oil. In summary, dietary intake for a long period on dietary fats with different fatty acids profile led to differences in some aspects associated with the aging process at the heart. Fish oil seems to be the fat most protective of heart during aging.


Author(s):  
Larisa Belchinskaya ◽  
A. Dmitrenkov ◽  
Konstantin Zhuzhukin

The article is devoted to the study of technologies for the use of used motor and vegetable oils for hydrophobizing treatment of birch wood. In this work, synthetic and semi-synthetic engine oil is used to impregnate wood; spent corn oil, sunflower oil, organosilicon liquid GKZh-11, industrial impregnating composition of ZhTK. The effectiveness of the impregnating compositions is estimated by the indicators of water absorption and swelling in two mutually perpendicular directions (radial, tangential). Spent motor and vegetable oils saturate wood quite well and give it hydrophobic properties. At the same time, impregnation of birch wood with used engine oil (OMM) allows to improve water absorption of birch wood by 52.1% compared to natural wood and by 21% compared to water absorption. Thus, the processing of birch wood with used motor and vegetable oils makes it possible to utilize production waste and improve the properties of low-value wood species with a significant increase in its resistance to external influences.


Author(s):  
César L Ramirez-Tortosa ◽  
Alfonso Varela-López ◽  
Maria D Navarro-Hortal ◽  
Francisco M Ramos-Pleguezuelos ◽  
Bélgica Márquez-Lobo ◽  
...  

2001 ◽  
Vol 7 (1) ◽  
pp. 15-21 ◽  
Author(s):  
S. Bastida ◽  
F. J. Sánchez-Muniz

Changes in sunflower oil (SO), olive oil (OO) of 0.4º acidity value and a mixture (1:1) of both oils (MO) were studied during forty domestic discontinuous deep-fat frying of various foodstuffs, mostly frozen foods. The replenishment of the oil in the fryer with fresh oil was performed after every ten uses to maintain the oil volume in the fryer. Alteration of oils was evaluated by measuring polar content (PC) and compounds related to thermoxidative and hydrolytic changes. PC increased with different rates in the three oils, thus after twenty fryings, PC was 25.3 g/100 g oil for SO, 22.4 g/100 g oil forMOand 19.7 g/100 g oil for OO. At the fortieth frying, the three oils surpassed the critical level for PC of 25 g/100 g oil, but SO andMOwere abused oils with a PC value = 30 g/100 g oil. Oxidized triacylglycerols (OTG), triacylglycerol dimers (TD) and triacylglycerol polymers (TP) increased after forty fryings 6.1, 34.5 and 260 times, respectively, in SO; 7.8, 50.9 and 115.8 times, respectively, in MO and 19.5, 70 and 149 times, respectively, in OO. The TP+TD/OTG ratio was used to assess the more predominant alteration through frying in the three oils. This ratio increased after forty fryings more in SO followed by MO, and then by OO, showing that oils rich in linoleic acid became more polymerized in frying than those rich in oleic acid. According to PC and the thermoxidative changes, MO behaved as a mix of OO and SO. Data indicated that during the first twenty fryings, olive oil of 0.4 º acidity value and the oil mix performed more satisfactorily than sunflower oil in repeated fryings of frozen foods, however, differences in frying oil behavior decreased during the last twenty fryings.


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