Les matikres grasses sont ajoutCes aux rations des ruminants pour ameliorer l’efficacite d’utilisation de 1’Cnergie B des fins de production. L’intestin gr&le des ruminants posskde une forte capacitC d’absorption des acides gras alimentaires saturCs par l’action des hydrogenases bactkriennes du rumen. La synthkse et la secretion des lipoproteines riches en triacylglycerols (chylomicrons, VLDL) ...

Although medium-chain triacylglycerols (MCTs; 8:0 and 10:0) historically have been considered nonlipemic for most individuals, the report by Asakura et al (1) suggests that MCTs may be hypercholesterolemic in subjects with hypertriglyceridemia. Although the authors emphasized the hypercholesterolemia induced when MCTs progressively replaced corn oil in the carefully manipulated diet of these su...

The intestine can vary its triacylglycerol output rate depending on differing physiological conditions. The rate-limiting step in the complex process from fatty acid and monoacylglycerol entry to triacylglycerol export is unknown but suggested to be the transport of triacylglycerol from the endoplasmic reticulum to the Golgi. The present studies were carried out to test this hypothesis. The con...

A systematic study was undertaken to observe the effects of dietary (dioleoyl) triacyl-sn-glycerol structure on chylomicron composition and metabolism. First studied was a series of 1,2-dioleoyl-3-(saturated)acyl-sn-glycerols, where the fatty acid esterified at the 3-position was varied from 14 to 24 carbons. Next a series of 1,3-dioleoyl-2-acyl glycerols was studied, with various fatty acids e...

The search for new biocatalysts has aroused great interest due to the variety of micro-organisms and their role as enzyme producers. Native lipases from Aspergillus niger and Rhizopus javanicus were used to enrich the n-3 long-chain polyunsaturated fatty acids content in the triacylglycerols of soybean oil by acidolysis with free fatty acids from sardine oil in solvent-free media. For the immob...

BACKGROUND Dietary deficiency in n-3 (omega-3) polyunsaturated fatty acids (PUFAs) prevails in Western populations and potentially results in adverse health outcomes. To circumvent the slow n-3 PUFA incorporation in phospholipids of key cells after oral supplementation, a new preparation for intravenous bolus injection was developed with 20 g triacylglycerols/100 mL of a mixture of 80% medium-c...

Although medium-chain triacylglycerols (MCTs; 8:0 and 10:0) historically have been considered nonlipemic for most individuals, the report by Asakura et al (1) suggests that MCTs may be hypercholesterolemic in subjects with hypertriglyceridemia. Although the authors emphasized the hypercholesterolemia induced when MCTs progressively replaced corn oil in the carefully manipulated diet of these su...

There have been many studies involving frying of potato chips in various vegetable oils in order to observe the quality of the fried product [1-6]. Frying oils are exposed to extreme environmental conditions (air, water or steam, high temperatures of 140-200 °C), trace metals that result in degradation of the frying oil triacylglycerols by oxidation, polymerization, isomerization, cyclization a...

Time-restricted feeding (TRF) can reduce adiposity and lessen the co-morbidities of obesity. Mice consuming obesogenic high-fat (HF) diets develop insulin resistance hepatic steatosis, but have elevated indices long-chain polyunsaturated fatty acids (LCPUFA) that may be beneficial. While TRF impacts lipid metabolism, scant data exist regarding impact upon lipidomic composition tissues. We (1) t...

Abstract Background Leaves constitute a large input of lipids to soil, yet comparatively little is known about the fate leaf in soil. Our aim was explore initial stages degradation lipids, both loss intact lipid and subsequent mineralisation. We focussed on intracellular – triacylglycerols implicated storage, membrane such as phospholipids galactolipids, pigments because they collectively more ...