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beef tallow is obtained by rendering beef fat, the resultant product then being bleached, neutralised and deodorised (refined beef tallow). On the other hand, the product of fat that is simply rendered is known as "edible beef tallow". Beef tallow is obtained by means of a dry or wet rendering process. The wet rendering process is more gentle and delivers better yields. With the wet rendering process, offal from slaughterhouses undergoes coarse mechanical pulverising and is then steam-heated to a temperature of at least 90°C, breaking down and sterilising enzymes. Fat is then removed from the tissue. The water-fat mixture is then cooled and the fat (edible beef tallow) is separated. Further chemical-physical stages (bleaching, neutralisation, deodorisation) ultimately deliver a product known as 'refined beef tallow'.
Nowadays, the dry rendering process is uneconomical in terms of the energy that is required and it is rarely used.
Beef tallow is a whitish (beef tallow) or whitish to yellow (edible beef tallow) substance. It is solid at 20°C and gives off a mild odour. It is not water-soluble, but it is soluble in organic solvents. The main components in both fats are: oleic, palmitic, stearic, palmitoleic, linoleic and myristic acid. Other fatty acids account for <1% of the product.