Ecological aspects, technology and the line of reclamation of waste meat in enterprises processing into the protein fodder additive
2007
Seleznev, A.D. | Shvedko, A.F. | Khrutskiy, V.I.,Republican Unitary Enterprise Scientific and Practical Centre of the National Academy of Sciences of Belarus for Agriculture Mechanization, Minsk (Belarus)
Wastes of animal industries are valuable high-protein forage for animals and birds. However the technology of waste processing should guarantee safe toxicological and microbiological status of a ready product, its high fodder value, an opportunity of long storage and ecological safety. As a basis of new technology on processing waste of animal industries is extrusion of the material. Sharp pressure difference at an output extruded article from a trunk extrusion machine, leads to break cell wall, including cell wall of microorganisms, fungi and mustiness. During dry extrusion of animal industries waste exposed in short-term (up to 30 seconds) to influence of a heat (up to 175 deg С), at pressure up to 40 atm., and also to friction in the damp environment. Short-term temperature processing renders the minimal influence on quality of fiber, destroying in him only secondary communications, not destroying amino acids (assimilation a protein makes 90 percent, lysine comprehensibility up to 88 percent), inactivation antinutritious factors, destroys or suppresses up to a comprehensible level toxins of bacteria, fungi and mustiness. For 30 seconds of stay of raw material in extrusion machine moisture content goes down to 50 percent (from initial), the heat and pressure will neutralize action of the enzymes contained in the waste that promotes substantial growth of periods of storage of finished goods
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