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 ra...

There was a rapid net uptake of free fatty acid (FFA) by human platelets when long-chain FFA, bound to human serum albumin, were incubated with platelet suspensions. Results from experiments in which both palmitate and albumin were labeled indicated that the fatty acid dissociated from the protein during uptake. Much of the FFA taken up by the platelet in short-term incubations remained in unes...

Arterial-venous concentration differences for individual free fatty acids (FFA) were measured across the deep tissues of the forearm, the splanchnic vascular bed, and the kidney in healthy, postabsorptive subjects. In addition, arterial-portal venous FFA differences were determined in five patients undergoing elective cholecystectomy. The differences in fractional uptake among the individual FF...

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...

Abbreviations: EC – embryogenic calli; EFA – esterified fatty acids; FA – fatty acids; FAME – fatty acid methyl ester; FFA – free fatty acid; GC – gas chromatography; GC-MS – gas chromatography and mass spectrometry; HS – hypocotyl segments; HSC – hypocotyl segments with incipient calli formation; LCFA – long-chain fatty acid; MCFA – mediumchain fatty acids; NEC – non-embryogenic calli; PCA – p...

Using a recently developed technique of direct tracer injection into selective adipose tissue sites (Baker et al., Mech. Ageing Dev., 27: 295-313, 1984), we have studied the esterification of free fatty acids (FFA) to triglyceride fatty acids in the epididymal fat pads of normal and Ehrlich ascites carcinoma-bearing mice. We have tested the hypothesis that, during Ehrlich ascites carcinoma grow...

In addition to the obvious differences in body shape, there are substantial differences in lipid metabolism between men and women. These differences include how dietary fatty acids are handled, the secretion and clearance of very low-density lipoprotein-triglycerides, the release rates of free fatty acids (FFA) from adipose tissue relative to energy needs, and the removal of FFA from the circul...

Plasma free fatty acid (FFA) kinetics in humans are often measured with only one tracer. In study 1, healthy volunteers received infusions of [U-¹³C]linoleate, [U-¹³C]oleate, and [U-¹³C]palmitate during continuous feeding with liquid meals low (n = 12) and high (n = 5) in palmitate and containing three labeled fatty acids to measure FFA appearance and fractional spillover of lipoprotein lipase-...

A microcolorimetric procedure for measurement of long-chain fatty acids in pure solution was adapted to eliminate phospholipid interference and used to determine free fatty acids (FFA) in human plasma and serum. The lipids were extracted from plasma into chloroform; the phospholipids precipitated with acetone and MgCl2 in water bath; and the FFA concentration in the supernatant determined by fo...