Different solvent extracts of a red algae, Hypnea flagelliformis,and two brown algae, Cystoseira myrica and Sargassum boveanum, collected from the Persian Gulf coast were subjected to different bioassays including: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, antibacterial and antifungal activity by thin layer chromatography (TLC)-bioautography, agar disc diffusion (ADD) ...

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 ratio of meoh...

in this study, we measured the composition and free radical scavenging activity of several species of nuts, namely, torreya grandis, carya cathayensis,and myrica rubra. the nut kernels of the aforementioned species are rich in fatty acids, particularly in unsaturated fatty acids, and have 51% oil content. t. grandis and c. cathayensis are mostly produced in zhejiang province. the trace elements...

the present study was carried out to investigate the effect of various refining processes’ conditions on conjugated dienes in soybean oil. conjugated dienes contents of soybean oil were found to undergo reduction in neutralization and bleaching steps while being increased in deodorization. it was observed that alkali refining (neutralization) through 12 and 14 °bé, bleaching with either acid ac...

  In this study changes in fatty acids profile during frozen storage at -18°C of Cobia (Rachycentron canadum), caught from the Persian Gulf (Bandar Abbas) were studied. Changes in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), EPA+DHA/C16, n-3 PUFA/n-6 PUFA (n-3/n-6) and polyunsaturated fatty acids /saturated fatty acids (PUFA/SFA) were i...

To investigate the mechanism by which ethanol lowers plasma free fatty acids, we tested the ability of two products of alcohol metabolism, acetate and lactate, to lower free fatty acids in man. Sodium acetate was given orally to five healthy fasting volunteers and caused a significant fall in plasma free fatty acids. After amounts of ethanol and acetate that produced similar reductions in free ...

  In this study changes in fatty acids profile during frozen storage at -18°C of Cobia (Rachycentron canadum), caught from the Persian Gulf (Bandar Abbas) were studied. Changes in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), EPA+DHA/C16, n-3 PUFA/n-6 PUFA (n-3/n-6) and polyunsaturated fatty acids /saturated fatty acids (PUFA/SFA) were i...

Dole’s titrimetric method for determination of the free fatty acide of plasma has been modified to improve ita specificity. The fatty acid solution which is to be titrated ie first washed with 0.06 per cent H,SO, and thus freed of lactic acid and of an acetone-insoluble material which interferes. With this change, the Dole procedure yields results which agree well with those of Gordon’s me...

A method for measuring free fatty acids by enzymic cycling is described. Free fatty acids are converted to acyl-CoAs by acyl-CoA synthetase, then the acyl-CoAs are hydrolyzed back to the free fatty acids by acyl-CoA hydrolase in a cyclic fashion. The amounts of AMP produced during this cyclic reaction are determined from the absorbance at 340 nm in the presence of AMP deaminase and glutamate de...

Fasted dogs prepared with catheters in the femoral artery, portal vein, and hepatic vein and infused intravenously with palmitate-1-(14)C were used to estimate uptake of free fatty acids in liver and their conversion to major metabolic products secreted into hepatic venous blood. Animals were studied under ordinary conditions and when fat mobilization was increased abruptly by infusing norepine...