Organic fatty acids

The purely mechanical dispersion of the agglomerates can be assisted by the addition of dispersion aids (e.g., amide, polypropylene or polyethylene waxes, metal carboxilates, organic fatty acids and their esters), which wet the particle surfaces, thus reducing the interaction between them (see Fig. 4.14 and Chapter 9) [19]. This significantly lowers the shear stresses required to disperse the agglomerates. 

The following brief overview describes the modes of transport of FFAs in the body and serves as a preview to the description of the mitochondrial transport system. FFAs are generated by lipolysis of TGs stored in lipocytes of adipose tissue (adipocytes) and in lipocytes of other organs. Fatty acids are also released by the action of lipoprotein lipase in the bloodstream. Special membrane-bound proteins mediate the transfer of FFAs across the membranes of various cells, such as enterocytes and hepatocytes. Within the cell, FFAs are carried on special proteins called fatty acid-binding proteins. These proteins have low molecular weights, about 15,000, and can account for 5% of cytosolic protein (Bemlohr et ah, 1997). 

Fig. 4. Removal of an organic fatty acid monolayer on a water surface by a rising hydrophilic plate after the method of Blodgett (1934,1935) and its analysis by multiple attenuated internal reflection (Baier, 1970). Reproduced with permission of the author.

Stearic acid ste- ar-ik (1831) (octadecanoic acid) n. CH3(CH2)i6COOH. A saturated organic fatty acid obtained by the hydrolysis with sodium hydroxide (saponification) of beef tallow. Mp, 69°C bp, 29°C per lOOmmHg. The salts, amides, and esters of this acid have long played important roles in the realm of plastics as lubricants, slip agents, and plasticizers, and stearic acid itself is present in numerous plastics compounds. 

Pork in contrast to beef and chicken meat includes a higher content of fat with different fatty acids (C15-C17) and glycerin esters giving H NMR signals at 1-2 ppm. The H NMR spectra of pork meat includes signals of SAW at 5 ppm and WAW with organics (fatty acids and esters) at 1.3 and 2 ppm (Figure 7.84a). 

Neutral hydrophilic surfaces such as cellulose are not very receptive, but can be made so by treatment with conventional, inorganic mordants. All insoluble metal oxides and silicates including most refractory materials and glass appear to be receptive to silica after the traces of organic fatty acids that invariably contaminate such surfaces are removed. As soon as the receptive surface is immersed in a solution of supersaturated silica, a monolayer of silica is adsorbed, probably as silicate ions. 

Composite heat stabilizers are liquid or solid compounds based on salts or metal soaps and compounds based on organic tin. Metal salts include Ca-Mg-Zn, Ba-Ca-Zn, Ba-Zn, and Ba-Cd common organic acids include organic fatty acids, naphthenic acid, oleic acid, benzoic acid, and salicylic acid. 

Chem. Descrip. Blend of organic fatty acids, esters, and glycerides Chem. Analysis 100% solids... 

To be commercially viable it was necessary to identify organo-gelators that could economically be employed to gel large quantities of hydrocarbon. A satisfactory group of candidates was identified as mixture of the aluminium sorqjs of organic (fatty) acids with addition of fillers. 

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