Activity of the oxidative phosphorylation system (OXPHOS) is decreased in humans and mice with nonalcoholic steatohepatitis. Nitro-oxidative stress seems to be involved in its pathogenesis. The aim of this study was to determine whether fatty acids are implicated in the pathogenesis of this mitochondrial defect. In HepG2 cells, we analyzed the effect of saturated (palmitic and stearic acids) an...

Palmitic, stearic, oleic, and linoleic acids at concentrations of 200 nmol/ml all inhibited autolysin activity 80% or more in whole cells or cell-free extracts. This concentration of the saturated fatty acids palmitic acid and stearic acid had little or no effect on the growth of whole cells or protoplasts. However, the unsaturated fatty acids oleic acid and linoleic acid induced lysis in both ...

background: this study aimed at determining the appropriate method for dewatering and drying biomass and selecting a suitable organic solvent for lipid extraction. methods: nannochloropsis oculata was cultured in gillard f/2 medium and after reaching the end of the stationary growth phase, algal biomass was separated from aqueous by centrifuge and dried through three methods: oven, air-dried an...

In this study, esterification reaction of different carboxylic acids (Acetic acid, Palmitic acid, Oleic acid) with ethanol was investigated by ZnO, Al2O3-ZnO mixed oxide and phosphotungestic acid (10 %wt) immobilized on the Al2O3-ZnO mixed oxide. The heterogeneous catalysts were characterized by XRD, BET, FE-SEM and EDX techniques. Optimum yield was achieved by using 10% HPW/Al2O3-ZnO as the be...

Soybeans (i.e., Glycine max L. Merr.) possessing a novel genetic determinant for the enhanced production of palmitic acid in the endogenously formed vegetable oil of the seeds are provided. Such genetic determinant is the homogeneous recessive fap5fap5 gene pair that has been found to be capable of formation through mutagenesis. Once formed, such genetic determinant can be readily transferred t...

Sphingomyelin prepared with the older methods from brain and spleen yielded on acid hydrolysis palmitic, stearic, and lignoceric acids (1, 2). Mere found that in addition to these saturated acids nervonic acid is present in the sphingomyelin of brain (3). The presence of palmitic acid in the sphingomyelin molecule of brain seemed questionable, since it was shown that sphingomyelin prepared by t...

Recently, the catalytic upgrading of bio-oil to renewable diesel has been attracting more and more attention. In the current paper, carbon nanotube (CNT)-supported nickel catalysts, namely, 5% Ni/CNTs, were prepared for liquid hydrocarbon production through the deoxygenation of palmitic acid, the model compound of bio-oil under a mild condition of 240 ◦C reaction temperature and 2 MPa H2 pressu...

In studies where [1-13C]palmitic acid is employed as isotopic tracer in vivo, we have described a selected ion monitoring gas-liquid chromatography-mass spectrometry micro-method which allows plasma tracer enrichment as well as plasma palmitate content to be determined in the same 100-microliter sample through the use of [5,5,6,6-2H4]palmitic acid as assay internal standard. For standard soluti...

Modifications of the fatty acid composition of plant vegetative tissues produce deficient plant growth. To determine the expression of the seed high-saturated sunflower (Helianthus annuus L.) mutant character during the vegetative cycle, five sunflower mutant lines (three high-stearic and two high-palmitic) have been studied during their germination and vegetative cycle. No significant variatio...