Process for making granular L-lysine
US5990350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 16, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23K40/10
- WIPO fieldFood chemistry
- WIPO sectorChemistry
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. Granules in the size range between about 177 micron and 1190 micron, and preferably between about 177 micron and 420 micron, are selected by means of a sieving process and bagged. Granules which are larger than about 1190 micron are ground down and combined with particles which are…
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