EP 0280817 A2 19880907 - Process for the removal of basic materials from plant products.
Title (en)
Process for the removal of basic materials from plant products.
Title (de)
Verfahren zur Entfernung von basischen Materialien aus Pflanzenprodukten.
Title (fr)
Procédé pour éliminer des matières basiques de produits végétaux.
Publication
Application
Priority
US 94710286 A 19861229
Abstract (en)
A process is provided for the selective removal of basic materials from plant products, in particular, for removing nicotine from tobacco without materially affecting the content of the other components of the tobacco. Tobacco is traversed with a solvent in the supercritical state or in the liquid state wherein nicotine and the other components dissolve in the solvent. The solvent is then passed through an acid-containing trap where the solvent is essentially freed of nicotine. The solvent, depleted of nicotine and enriched in the other components, is then recycled to the tobacco to reextract nicotine. In addition, the tobacco may be pretreated with a chemical base which does not substantially react withe the tobacco components under ambient conditions but rather is activated under the conditions of the extraction process. Pretreatment of the tobacco with a chemical base neutralizes nicotine salts and permits the extraction process to be carried out under milder conditions.
IPC 1-7
IPC 8 full level
A23L 1/221 (2006.01); A23L 27/10 (2016.01); A24B 15/24 (2006.01); A62D 3/00 (2006.01); B01D 11/00 (2006.01); B01D 11/02 (2006.01); C07B 63/00 (2006.01); C07D 401/04 (2006.01); C11B 9/02 (2006.01)
CPC (source: EP)
A24B 15/24 (2013.01); C11B 9/02 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0280817 A2 19880907; EP 0280817 A3 19900516; EP 0280817 B1 19940309; AT E102446 T1 19940315; AU 612128 B2 19910704; AU 8310987 A 19880630; BR 8707110 A 19880802; CA 1317961 C 19930518; DE 3789300 D1 19940414; FI 875673 A0 19871222; FI 875673 A 19880630; FI 88453 B 19930215; FI 88453 C 19930525; JP 2694253 B2 19971224; JP S63229102 A 19880926; ZA 879384 B 19880928
DOCDB simple family (application)
EP 87311430 A 19871224; AT 87311430 T 19871224; AU 8310987 A 19871229; BR 8707110 A 19871229; CA 555304 A 19871223; DE 3789300 T 19871224; FI 875673 A 19871222; JP 33669687 A 19871228; ZA 879384 A 19871214