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Pet food extrusion technology

Views:548     Author:Site Editor     Publish Time: 2017-05-26      Origin:Site

Extrusion cooking technology is used for the manufacture of commercial dry food for canine and feline diets: about 95% of dry pet foods are extruded . In this processing technology a mixture of ingredients is steam conditioned, compressed and forced through the die of the extruder . The reason for the widespread use of extrusion cooking to produce pet diets is the versatility of this technology to mix diets and functionally improve, detoxify, sterilize and texturize a large variety of food commodities and food ingredients. A combination of moisture, pressure, residence time, temperature and mechanical shear is used for these reactions and transformations . Pet food by extrusion processing focuses on the production of feeds for animals with a high nutritional value but low economic usefulness. Nonetheless, balancing the components and gentle processing are at the center of the related quality considerations. Extrusion is therefore increasingly proving to be the right tool for modern pet food.

Extrusion has become a very important process in the manufacture of pet food. Extrusion machines use single or twin screws to transport, mix, knead, shear, shape, and/or cook multiple ingredients into a uniform food product by forcing the ingredient mix through shaped dies to produce specific shapes and lengths. Extrusion provides the foundation for continuous production. Food extruders are used to produce pasta and other cold formed products, cereals, snacks, pet food, feed, modified starches for soup, baby food, and instant foods,  and textures vegetable proteins. Single-screw extruders have been in use for continuous cooking and in the forming of ready-to-eat (RTE) cereals as a one-step process since the 1960s. Twin-screw extruders were in common use in food production by the 1980s.


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