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

1976-11-12

1978-12-26

Pellegrino, Stephen C.

Tobacco

Cigar or cigarette making

Tobacco feeding

131143, A24B 314, A24B 1502

Patent

active

041311183

ABSTRACT:
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 fibrous tobacco residue, (2) concentrating the extract, (3) cooling the extract, and (4) separating and recovering the potassium nitrate crystals formed therein. The denitrated aqueous extract 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.

REFERENCES:
patent: 3390685 (1968-07-01), Bethmann et al.
patent: 3847163 (1974-11-01), Molyneux
patent: 3847164 (1974-11-01), Mattina et al.
patent: 3983222 (1976-09-01), Lehto

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