A method is described for the determination of the initial rate of cholesterol esterification in human plasma, based on the enzymatic determination of free cholesterol in the plasma before and after incubation at 37 degrees C. The cholesterol esterification rate was linear up to 40 minutes. In 18 normal male and 10 normal female subjects the cholesterol esterification rate was 91 +/- 15 (mean +...

Rates of lipolysis, esterification, and free fatty acid release were estimated in isolated epididymal fat cells prepared from rats fed either ad lib. or with a restricted caloric intake. Basal and epinephrine- or theophylline-stimulated rates of lipolysis correlated positively with cell size in the ad lib.-fed group only. Rates of esterification, both basal and epinephrine-stimulated, correlate...

Abstract Olive pomace (OP) and olive oil (OPO) are low-cost, non-edible, by-products of processing. Converting OPO into biodiesel by (trans-)esterification a heterogeneous acid catalyst sulfonation with sulfuric could promote waste-to-energy actions. has high fatty content 126.39 mgKOH/goil, which does not allow the use base for production. Homogeneous such as be used, however wastewater should...

The second-order rate constant (k2) for the esterification of methoxyacetic acid with benzyl alcohol is reported in a range of ionic and molecular solvents. The solvent effects on esterification rate are examined by using a linear solvation energy relationship based on the Kamlet-Taft solvent scales (alpha, beta, and pi*). It is shown that the hydrogen bond basicity of the solvent is the domina...

Esterification of cholesterol with [l-C]palmityl-CoA by an atherosclerotic cell-free homogenate was approximately 16-50-fold greater than that by a normal cell-free homogenate for a given amount of protein in the homogenate. This difference was due to hyperactivity of the cholesterol-esterifying system in the atherosclerotic cell-free homogenate rather than to depletion of radioactive palmityl-...

Green recycling of poly(ethylene terephthalate) plastic waste, in this respect, PET waste was subjected to de polymerization process with tri methylene glycol (1,3-propandiol) the presence manganese acetate (1.0 % w/w total Wight reactants) as trans esterification catalyst, product is Bis-(3-hydroxy-propyl)-terephthalate, BHPT, a non-ionic surfactant separated and characterized by FT-IR 1HNMR e...

This study demonstrates the potential of different cinnamate esters, namely methyl trans-cinnamate (MC), isobutyl (IBC), allyl (AC), and ethyl (EC), as environmentally friendly plasticizers for polylactide (PLA). Plasticized PLA formulations with a constant nominal wt% 20 each plasticizer are compounded in twin-screw co-rotating extruder subsequently processed by injection molding. The results ...

The negative environmental impact generated by fossil fuel has resulted in the demand to search for alternative routes of renewable sources energy, such as biodiesel, that have unlimited duration while having little or no hazardous impact. In this study, trans-esterification palm kernel oil and groundnut was carried out using sodium methoxide (CH3ONa) a catalyst. effect varying Sodium Methoxide...