Rendering process

BHA and BHT, which are both fat soluble, are effective ia protecting animal fat from oxidation, and are often added duting the rendering process. Propyl gallate is also effective, but it has limited fat solubiUty, and turns bluish black ia the presence of iron. It is typically used as a synergist ia combination with BHA or BHT. TBHQ is most effective against oxidation ia polyunsaturated vegetable oils (qv), and is often used ia soybean oil (19). 

Rendering. The rendering process is applied on a large scale to the production of animal fats, such as tallow, lard, bone fat, and whale oil. The fatty tissues are chopped into small pieces and are boiled in steam digesters. The fat is gradually liberated from the cells and floats to the surface of the water, where it is collected by skimming. A similar method is used in the extraction of palm oil from fresh palm fruits. 

The frying of bacon, to cite a familiar example, is essentially a dry rendering process. Dry rendering can be batch or continuous. 

The fats and oils produced from the rendering process provide a concentrated source of energy for use in animal feeds. Addition of fat in feeds also reduces dustiness of the feed and makes it more palatable. Fats and oils also provide important... 

Rendering is accomplished via a variety of equipment and processes. It is a process of both physical and chemical transformation, using trimmings from the production and processing of food animals for meat. AU of the rendering processes involve the application of heat, the extraction of moisture, and the separation of fat when it is part of the raw material. 

At this point, the raw material goes into either a batch or continuous cooking system. Within the cooking system, the heating and grinding action breaks down the fat cells in the animal tissue to release the fat. The rendering process consists essentially of two steps. First, the raw material is heated or cooked to evaporate the moisture. The second step is the removal of fat. 

The rendering process converts raw animal or fish tissue into various protein, fat, and mineral products, all of which are transformed into rich granular-type powders and fats with specific nutritional and chemical components. The animal byproduct raw material has approximately 60%-f of water and yields about 20% protein and 20% fat. These protein, fat, and mineral fractions are then available for a variety of uses. The annual volume in the United States approximates 4.2 million metric tons of animal protein and 4.2 million tons of rendered fat. 

Microwaves offer an interesting solution to these process engineering problems and thus to improvement of the economy and flexibility of the extrusion technique. Transfer of energy with microwaves can for the most part be controlled independently of the mechanical and thermal energy supply situation inside the extruder, so that they can not only potentially increase the total amount of transferable energy but also render process control much more flexible. 

Erucic acid was also fed with lard. Erucic acid was added in two ways either as the free acid or biologically interesterified into the lard triglycerides. In order to prepare the latter, pigs were fed HEAR oils for 16 weeks, slaughtered, and lard obtained from the pigs by the usual rendering process... 

Extraction of oils has largely relied on mechanical or heat rendering process for centuries. Increased demand of productivity to separate oils from oilseeds has been the principal factor driving the changes of oilseed processing from the ancient hydraulic press to a continuous screw press or expeller in early 1900 s. This operation still left more than 4-5% residual oil in the pressed cake. More complete recovery of oil can only be effectively accomplished by solvent extraction. ... 

Rendering Process of generating an image from a model by means of computer programs. 

In the Render to New Track dialog box, browse for a location and enter a name for the file to be created from the mixed-down tracks. Click the Save button. After the render process, a new track is inserted into the project. Draw an event in that track that corresponds to the takes. 

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