Abstract: A process uses extrusion technology for the production of a dense amino acid feed supplement. The feed supplement comprises of one or more substantially pure amino acids preferably selected from a group of lysine, threonine or tryptophan, alone or in combination. In one embodiment, a substantially pure amino acid is mixed with water to provide an extrudable mixture with a desired moisture content. The extrudable mixture is fed into an extruder and extruded through a die to provide at least one noodle of dense cohesive material. In another embodiment, at least one noodle is segmented, dried, milled and sieved to provide granules with a particle size range of between about 177 micron and 1190 micron. In a further embodiment, two substantially pure amino acids are mixed to provide a mixture which is extruded to produce at least one noodle.

Abstract: A process produces an L-Lysine feed supplement with a final L-Lysine purity in the range theoretically between about 35% and 80%, measured as a percent of free-base per kg, and more preferably between about 50% and 80% L-Lysine. The process comprises adding a material containing L-Lysine to an L-Lysine fermentation broth or a fraction of an L-Lysine fermentation broth. The added material being an amount which brings a final L-Lysine feed supplement with an L-Lysine purity into a range theoretically between about 35% and 80%, measured as a percent of free-base per kg, and more preferably between about 50% and 80% L-Lysine. The fraction of L-Lysine fermentation broth is obtained by any suitable separating means such as ultrafiltration or centrifugation. The process also comprises a drying step which may involve any suitable drying means such as a spray granulator, spray dryer, tray dryer, drum dryer, rotary dryer, and tunnel dryer.

Abstract: Process for the efficient production of a substantially dust-free, free flowing granular L-Lysine in which the L-Lysine content is adjustable. Cells are removed from a fermentation broth containing L-Lysine to make a substantially cell free L-Lysine broth. Water is removed from the L-Lysine broth to form a concentrated L-Lysine broth. The L-Lysine content of the concentrated L-Lysine broth may be adjusted to be between about 35% and 76%, measured as a percent of freebase per kg, by adding material containing L-Lysine to provide an enriched L-Lysine broth. The enriched L-Lysine broth is agglomerated by means of an atomized spray of the enriched L-Lysine broth directed onto a fluidized bed of percolating L-Lysine particles. The L-Lysine particulates act as seeds for the agglomeration process wherein the L-Lysine particulates grow in size to provide a substantially dust-free, free flowing granular L-Lysine.