Process for reducing the salt concentration in a biomass...

Details Process for reducing the salt concentration in a biomass... Process for reducing the salt concentration in a biomass...

C - Chemistry, Metallurgy

07

K

530/3.12, 195/1.

C07K 1/14 (2006.01) C12N 1/00 (2006.01)

Patent

CA 2012109

70577-63 Abstract of the Disclosure Alcohol is suitable for the extraction of salt from biomass-containing suspensions, in particular from the salt-containing lower phase of an aqueous 2-phase extraction of intracellular proteins after cell disruption, with the formation of a salt-containing alcoholic upper phase. It is possible to use ethanol, propanol, isopropanol or tert.-butanol, but especially ethanol, as the alcohol. The upper phase is separated from the lower phase by disk separators or decanters. The extraction is carried out, in particular, as a countercurrent extraction in at least three stages, and uses 10 to 30% by weight salt- containing suspension or liquid with 30 to 50% by weight alcohol, in particular ethanol, remainder water. The alcohol is removed from the resulting salt-rich upper phase by evaporation, and the salt solution is recycled where appropriate after further concentration to obtain proteins.

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