Patent ID: 9066531
Filing Date: 2015-06-30
Classification: A23K,A61P,C07C,C12F,C12N,C12P,Y02A,Y02E

Abstract:
1. A process for recovering a protein-containing fermentation agent, comprising: (i) forming an aqueous mixture of an organic material and a protein-containing fermentation agent capable of fermenting the organic material to produce ethanol; (ii) fermenting the aqueous mixture to produce a fermented aqueous mixture comprising ethanol; (iii) recovering from the fermented aqueous mixture an ethanol stream which is rich in ethanol and a co-product stream comprising unfermented organic material, protein-containing fermentation agent and dissolved solids in water; (iv) subjecting the co-product stream to a first separation stage to recover a first stream rich in the unfermented organic material and a second stream rich in the protein-containing fermentation agent suspended in water; and (v) subjecting the second stream to a second separation stage, capable of recovering suspended solids from a liquid, to recover a third stream rich in the protein-containing fermentation agent and a fourth stream comprising dissolved solids, suspended solids, or both in water.