METHOD FOR WHITENING TOBACCO

METHOD FOR WHITENING TOBACCO

A method of preparing a whitened tobacco material is provided, including: (i) extracting a tobacco material with a first extraction solution to provide a tobacco solids material and a tobacco extract; (ii) cooking the tobacco solids material in an alkaline cooking liquid comprising sodium sulfide an...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SVENSSON, Richard, MCCLANAHAN, David Neil, CASTELIJN, Bas, SUNDVALL, Lars Olov
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CIGARETTES
CIGARS
HUMAN NECESSITIES
MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING ORCHEWING
SMOKERS' REQUISITES
SNUFF
TOBACCO
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Beschreibung
Zusammenfassung:A method of preparing a whitened tobacco material is provided, including: (i) extracting a tobacco material with a first extraction solution to provide a tobacco solids material and a tobacco extract; (ii) cooking the tobacco solids material in an alkaline cooking liquid comprising sodium sulfide and having a pH of greater than 11 to form a tobacco pulp; (iii) treating the tobacco pulp with an acid to lower the pH of the tobacco pulp and provide a neutralized tobacco pulp; (iv) extracting the neutralized tobacco pulp with a second extraction solution comprising at least one chelating agent to provide an extracted tobacco pulp; and (v) bleaching the extracted tobacco pulp with a bleaching solution to provide a whitened tobacco material.