Palmitate-1-(14)C was injected intravenously into unanesthetized, fasted rats. Disappearance of tracer from plasma free fatty acids was studied. A large component of free fatty acid (FFA) recycling was directly demonstrated by reinjection experiments. The latter studies also indicated the existence of an unidentified, rapidly turning over polar lipid in plasma which was synthesized from palmita...

The effect of aqueous solutions of ascorbic acid (AA) on the rancidity development in Cobia (Rachycentron canadum) fillets during frozen storage was studied. Cobia fillets were treated with ascorbic acid (AA 0.25% and AA 0.5%) then stored at -18°C up to 6 months. Rancidity development was measured by several biochemical indices including free fatty acids (FFA), peroxide value (PV), and thiobarb...

  This study was aimed to investigate effects of aqueous citric acid (CA) and ascorbic acid (AA) on lipid oxidation in comparison with effect of vacuum packaging in order to find better treatment to delay improper changes in the Persian sturgeon (Acipenser persicus) fillets during frozen storage due to lipid oxidation. In this study traditional packaging, vacuum packaging, ascorbic acid solutio...

In this study, moisture content, free fatty acids, peroxide, iodine value, unsaponifiable matter, saponification value, fatty acid composition and tocopherol contents of wheat germ oil obtained by SC-CO2 extraction and cold press technology were investigated. Moisture, free fatty acid (FFA), peroxide value, iodine value, unsaponifiable matter and saponification value of cold pres...

The effect of fatty acid structure on utilization by Ehrlich ascites tumor cells was studied in vitro. Unesterified palmitate, stéarate, oleate, and linoleate were metabolized in a qualitatively similar fashion and at roughly comparable rates. Each of these fatty acids was rapidly taken up by the cells in unesterified form. The amount of free fatty acid taken up during the first few minutes wa...

Gordon et all-3 suggested that the transport of depot fat to the site of utilization probably takes place in the form of free fatty acid (unesterified fatty acid). Under both normal and abnormal circumstances, the amount of free fatty acid is very small in the serum and liver occupying only 1/4-1/5 of triglyceride or phospholipid. The portion derived from dietary fat is transported mainly in th...

AIMS To investigate the relationship between adiposity and plasma free fatty acid levels and the influence of total plasma free fatty acid level on insulin sensitivity and β-cell function. METHODS An insulin sensitivity index, acute insulin response to glucose and a disposition index, derived from i.v. glucose tolerance minimal model analysis and total fasting plasma free fatty acid levels we...

Renin A from the submaxillary gland of male mice has been shown by a gas chromatography/mass spectrometry method to contain near stoichiometric amounts of a fatty acid mixture. The fatty acids on mouse renin were partially exchangeable with free tridecanoic acid in solution, with the tridecanoic acid truly exchanged and not just adsorbed in addition to the fatty acids already present. A gas chr...

The esterification of free fatty acids (FFA) with methanol is studied using Sulfonated Porous Carbon (SPC) as catalyst. In compare to the amorphous sugar catalyst and protonated Nafion, the proposed catalyst shows stability and high efficient performance in biodiesel production. The highest initial rate of oleic acid conversion is obtained at catalyst loading of 1 mmol H+ and mole ra...

etabolic adaptation likely represents one of the earliest esponses to myocardial ischemia. The myocardium preferntially oxidizes free fatty acids for energy production. owever, the dependency of fatty acid metabolism on xygen makes this process particularly vulnerable to ischeia. Under hypoxemic or ischemic conditions, the energy equirements of the myocardium are met by glucose rather han free ...