Method for removal of potassium nitrate from tobacco extracts

Details Method for removal of potassium nitrate from tobacco extracts Method for removal of potassium nitrate from tobacco extracts

A - Human Necessities

24

B

31/1.1

A24B 3/14 (2006.01) A24B 15/00 (2006.01) A24B 15/24 (2006.01)

Patent

CA 1096152

ABSTRACT OF THE DISCLOSURE This disclosure relates to a process for selectively removing and recovering potassium nitrate in a relatively pure state from tobacco, and especially from Burley tobacco stems. The process comprises the steps of (1) contacting tobacco plant parts with water to obtain an aqueous extract and a fi- brous tobacco residue, (2) concentrating the extract, (3) cooling the extract, and (4) separating and recovering the po- tassium nitrate crystals formed therein. The denitrated aqueous extracts is recombined with the fibrous tobacco residue as in making reconstituted tobacco and the like. The purified potassium nitrate is suitable without further purification to use as a fertilizer, thus eliminating costly disposal problems.

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